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AIT Community / Faculty / Resident / Constantinos B. Papadias

papadias_mug_march_04_1
CONTACT INFORMATION
Constantinos B. Papadias
Dean
Professor - IEEE Fellow
Athens Information Technology
PO Box 68, 19.5 km, Markopoulo Avenue
Peania 19002, Athens, Greece
Tel: (+) 30-210-668-2762
Mob: (+) 30-694-742-8689
Fax: (+) 30-210-668-2703
Email: papadias@ait.edu.gr
PERSONAL DATA
Date and place of birth: Athens, Greece
Citizenship: Greece
Languages: Greek, English, French
Marital status: Married, 3 kids

 

SUMMARY 

new

new_book_papadias Prof. Constantinos B. Papadias is the Dean of Athens Information Technology (AIT), a research and graduate education institute that is located in Athens, Greece. He is also the Head of AIT’s Broadband Wireless and Sensor Networks (B-WiSE) Research Group and Academic Director of its PhD Program, which runs in cooperation with Aalborg University in Denmark. He received the Diploma of Electrical Engineering from the National Technical University of Athens (NTUA) in 1991 and the Doctorate degree in Signal Processing (highest honors) from the Ecole Nationale Supérieure des Télécommunications (ENST), Paris, France, in 1995. He was a researcher at Institut Eurécom (1992-1995), Stanford University (1995-1997) and Bell Labs (as Member of Technical Staff from 1997-2001 and as Technical Manager from 2001-2006). He was also Adjunct Professor at Columbia University (2004-2005) and Carnegie Mellon University (2006-2011). His research interests span several areas of advanced communication systems, with emphasis on wireless, cognitive, green and next generation networks. He has published over 150 papers, one research monograph, two edited books, 5 book chapters, and has received over 5000 citations for his work. He has also made standards contributions (most notably as the co-inventor of the Space-Time Spreading (STS) technique that was adopted by the cdma2000 wireless standard for voice transmission) and holds 12 patents. He was a member of the steering board of the Wireless World Research Forum (WWRF) from 2002-2006, a member and industrial liaison of the IEEE’s Signal Processing for Communications Technical Committee from 2003-2008, a National Representative of Greece to the European Research Council’s IDEAS program from 2007-2008 and a Distinguished Lecturer of the IEEE Communications Society from 2012-2013. He is currently a member of the IEEE Communications Society’s Fellow Evaluation Committee. He has served as Associate Editor for the IEEE Transactions on Signal Processing, the IEEE Transactions on Wireless Communications and the Journal of Communicaions and Networks. He is currently the Technical Coordinator of three European Commission (7th Framework Program) research projects: HIATUS, in the area of interference alignment, HARP, in the area of remote radio heads, and ADEL, in the area of licensed shared access. His distinctions include the Bell Labs President’s Award (2002); a Bell Labs Teamwork Award (2003); the IEEE Signal Processing Society’s Young Author Best Paper Award (2003); ESI’s “most cited paper of the decade” citation in the area of wireless networks (2006); and his recognition as a “Highly Cited Greek Scientist” (2011). He is a Member of the Technical Chamber of Greece and a Fellow of IEEE.

 

 

EDUCATION - DEGREES

Dr. Papadias is a graduate of the National Technical University of Athens (Diploma, 1991) and the Ecole Nationale Supérieure des Télécommunications (Doctorate, 1995), as well as an alumnus of Stanford University’s Smart Antennas Research Group (SARG), where he was a post-doctoral follow during the period 1995-1997.

TEACHING EXPERIENCE, RESEARCH and PROFESSIONAL EXPERIENCE

  • Summer 1989 Practical Training at the Public Power Corporation of Greece during 3 months.
  • Summer 1990 Practical Training at the Electricité de France, les Renardières, during one month.
  • Sept. ’90 – June ’91 Diploma Thesis. Worked at the Signal Processing Laboratory of the National Technical University of Athens.
  • Oct. ’91 – July ’92 PhD student at E.N.S.T. Took graduate courses in signal processing and telecommunications and began research in adaptive filtering algorithms for communications applications.
  • Sept. ’92 – March ’95 Research Assistant, Eurécom Institute.
  • Worked for his PhD thesis under the supervision of professor D. Slock and conducted research in the field of blind equalization for digital transmission systems. Proposed several new techniques and algorithms that increase the performance characteristics of existing schemes, as well as novel approaches to the problem.
  • Spring ’93 Teaching Assistant, to professor D. Slock and professor P. Humblet, Eurécom. Courses: Signal Processing, Telecommunications. Was responsible for giving lectures, exercises and laboratory assignment as well as for the preparation and correction of homeworks.
  • Spring ’94 Teaching Assistant, to professor D. Slock. Course: Signal Processing.
  • Sept. ’94 – March ’95 Teaching Assistant, to professor P. Humblet, Eurecom. Supervised master-thesis projects.
  • April ’95 – Sept. ’97 Post-doctoral researcher, Stanford University.
    Joined the Information Systems Laboratory as a member of the Smart Antennas Research Group, headed by professor A. Paulraj. Conducted research on array signal processing, with focus on blind algorithms for space-time signal processing. Supervised graduate students in the group. Was involved with several research programs related to applications of smart antennas signal processing to wireless communications systems. He was also involved with the organization of the annual Workshop on Smart Antennas in Wireless Mobile Communications which is held every summer in Stanford University. He also taught short courses on smart antennas.
  • October ’97 – July 2001 Member of Technical Staff, Bell Laboratories, Lucent Technologies.
    Joined the Wireless Communications Systems Research Department of Bell Laboratories, headed by Dr. Reinaldo Valenzuela. Participated in several research projects focused on the study and design of transceivers for wireless communication systems, with an emphasis on signal processing techniques for multiple transmit/ multiple receive systems.
  • July 2001 – Feb. 2006 Technical Manager, Global Wireless Systems Research, Bell Labs, Lucent Technologies (on leave until May, 2007). He lead an international team of researchers (both in the USA and in the UK), with the goal of inventing and contributing to the design of future (fourth generation and beyond) wireless air interfaces. The team focuses on the invention and study of innovative transmission solutions for next generation wireless networks, ranging from physical layer to scheduling to system-level optimization techniques. We kicked off and participated in several EU and DARPA projects and conducted award-winning research that has found its way in several papers, patents and standards contributions. The team belongs to Lucent’s Broadband and Wireless Access Research Center, which is part of Bell Laboratories’ core research organization.
  • Sept. 2004 – Dec. 2006 Adjunct Associate Professor, Columbia University. Taught graduate courses on space-time wireless systems.
  • March 2006 – May 2007: Associate Professor, AIT
  • May 2006 – June 2011: Adjunct Professor, INI, Carnegie Mellon
  • June 2007 – present: Professor AIT
  • Jan. 2006 – Jan. 2008: Greece’s National Representative (Expert) in FP7 Program “IDEAS”
  • Jan. 2008 – present: PhD Program Academic Director, AIT
  • April 2013 – present: Head, AIT’s Broadband Wireless & Sensor Networks Research Group
  • March 2014 – present: Dean, AIT

RESEARCH INTERESTS 

Baseband digital (especially wireless) communications, signal processing algorithms for wireless communication systems; blind / semi-blind equalization, channel identification, source separation and channel tracking; multiple input / multiple output (MIMO) systems; information theory; space-time coding; adaptive filtering, statistical signal and array processing; biomedical signal processing; direction finding; smart antennas; wireless network design and optimization; re-configurable wireless systems; wireless LANs; wireless sensor networks; dynamic resource allocation; scheduling / MAC layer optimization for wireless systems; cross-layer design; mesh / multi-hop networks; context-aware networks, green wireless communications; wireless / wired network convergence; cognitive radio networks; licensed shared access; multi-antenna / multi-user wireless networks; parasitic & load-modulated antenna arrays; Massive MIMO; interference alignment; remote radio heads.

FUNDED RESEARCH PROJECTS
He was the main initiator of the FITNESS project (Fourth-generation Intelligent Transparent Networks Enhanced through Space-time Systems), which was funded by the European Commission’s Information Society Technologies (IST) Programme (under FP5) for the period 2001-2003. He oversaw the project’s technical management. He co-ordinated a Network of Excellence on Smart Antennas (SANE) proposal, which obtained funding by the IST 6th Framework Programme (FP6), under the ACE NoE consortium. He oversaw Bell Labs’ participation in WINNER, an FP6 integrated project aiming at the design of a next generation wireless air interface, as well as the targeted research FP6 project OBAN. He was also the main initiator of the IST FP6 project MEMBRANE (Multi-Element Multihop Backhaul Reconfigurable Antenna NEtwork), which focused on wireless reconfigurable multi-hop MIMO backhaul networks. Through members of his team he participated in the DARPA-funded project MnM (Multi-node MIMO) and under Bell Labs, in various other research projects, including a GSRT scientific and technological cooperation (PENED) project with the University of Athens (as “project leader abroad”). He participated as a contributor in the FP6 project RESOLUTION. He was the Technical Coordinator of the Future Emerging Technologies (FET) FP7 project CROWN, which was kicked off in May 2009, and dealt with cognitive radio networks. Since April of 2011, he is also the Tehcnical Coordinator of the FET FP7 project HIATUS, which deals with the problem of interference alignment.He is also the Technical Coordinator of the EU project HARP, in the area of radio remote heads, as well as of the EU project ADEL, in the area of licensed shared access for wireless networks. His external research fund raising efforts have resulted in contracts of approximately €3M ($4M) for the organizations that he has represented and about five-fold more (on the order of $20M) for the total received funds in the corresponding consortia.

HONORS

  • 1990: Award for top-tier under-graduate records by the National Bursaries Foundation of Greece.
  • 1991: Award for graduate studies abroad from the Eugenides Foundation (Greece).
  • 1995: Highest distinction for his PhD thesis from his oral examination committee (composed by professors C. Gueguen, A. G. Constantinides, J. LeRoux, P. Duhamel, D. Slock and S. Marcos) and special mention of excellent teaching abilities.
  • 2002: Promoted to Technical Manager, Wireless Research Lab, Lucent Technologies (he was the youngest member of Bell Labs Wireless Research Lab’s management team).
  • 2002,2003: Cited in Marquis Who’s Who in America
  • 2003: Co-recipient of the Bell Labs President’s Gold Award for his contributions to the Bell labs LAyered Space-Time (BLAST) project (“signal processing algorithms”).
  • 2004: Recipient of the IEEE Signal Processing Society’s Young Author Best Paper Award (2003).
  • 2004: Co-recipient of the Central Bell Labs Teamwork Award (for founding and contributing to the FP5 project FITNESS)
  • 2005: Cited in Marquis Who’s Who in the World
  • 2006: Named a National Representative (technology expert) by the Greek Secretariat of Research and Technology, responsible for the European Commission’s 7th Framework Programme (FP7) specific program “IDEAS.”
  • 2006: His paper with A. Paulraj "Space-Time Processing for Wireless Communications", was recognized as "the most highly cited paper in wireless networks" over the last decade by Essential Science Indicators (ESI)
  • 2008: Appointed as AIT’s PhD Academic Program Director
  • 2011: Was listed as as a "Highly Cited Greek Scientist" in http://www.highlycitedgreekscientists.org/
  • 2012: Distinguished Lecturer, IEEE Communications Society (2-year term)
  • 2013: Appointed Head of AIT’s Broadband Wireless & Sensor Networks Research Group
  • 2014: Appointed Dean of AIT

SOCIETIES

  • 1988: IEEE student member
  • 1991: Member of the Technical Chamber of Greece
  • 1996: IEEE member
  • 2002-2009: Member of the “Signal Processing for Communications” Technical Committee of the IEEE Signal Processing Society and serves as the Committee’s Industrial Liaison.
  • 2002-2006: Member of the Steering Board of the Wireless World Research Forum (WWRF), representing Lucent Technologies. Served as the board’s R&D issue manager
  • 2003: IEEE Senior Member
  • 2013: IEEE Fellow

COMMITTEES / EDITORIAL WORK / PAPER REVIEWING

  • Associate Editor, IEEE Transacations on Wireless Communications
  • Associate Editor, Journal of Communication Networks (Korea)
  • Guest Editor, EURASIP Wireless Communications, Special Issue
  • 2002-2005: Associate Editor, IEEE Transactions on Signal Processing
  • 2003: Guest Editor, EURASIP Journal on Applied Signal Processing, Special issue on MIMO Communications and Signal Processing (appeared May 2004). Co-editors: S. Barbarossa, V. Poor, X. Wang.
  • Paper reviewing: IEEE Transactions on Signal Processing, IEEE Signal Processing Magazine, IEEE Signal Processing Letters, IEEE Transactions on Wireless Communications, Signal Processing Elsevier, IEEE Journal on Selected Areas in Communications, IEEE Transactions on Communications, IEEE Transactions on Vehicular Technology, the International Journal of Adaptive Control and Signal Processing, and several other international conferences and journals.
  • Member of Technical Program Committee in several technical conferences (ICC, Globecom, IST, SPAWC, PIMRC, etc.)

TEACHING

  • Athens Information Technology, “Telecom Systems,” MSITT program.
  • Carnegie Mellon University & Athens Information Technology, “Wireless Communications,” MSIN program.
  • Athens Information Technology, "Wireless Communications", MSITT program,
  • Carnegie Mellon University & Athens Information Technology, "Digital Communications & Signal Processing System Design" MSIN program.
  • Carnegie Mellon University and Athens Information Technology, "Digital Communications" MSIN program.
  • Carnegie Mellon University and Athens Information Technology, "Special Topics in Communications & Networking" MSIN program, Fall Semester 2007.
  • Columbia University, Class ELEN6880, (topics in signal processing), “Space-Time Coding and Signal Processing for Wireless Communications,” fall semester, 2004 and fall semester, 2005.  

TUTORIALS / SHORT COURSES

Tutorials

  • [T1] C. Papadias and A. Lozano, “An Overview of MIMO Systems for Wireless Communications,” tutorial given at the 2005 ICASSP Conference, Philadelphia, USA, March 2004.
  • [T2] H. Huang and C. Papadias, “MIMO techniques for Wireless Systems,“ tutorial to be given at the 2006 IEEE Sarnoff Symposium, Princeton University, March 27-28, Princeton, NJ, USA.
  • [T3]A. Lozano and C. Papadias, “MIMO Systems for Wireless Communications,” tutorial given at the 2006 IEEE International Conference on Communications (ICC ‘2006), Istanbul, Turkey, June 11-15, 2006. Will soon be offered on-line by the IEEE ComSoc Society.
  • [T4] H. Huang and C. Papadias, “System-level MIMO: Theory and Applications,” tutorial given at the 2006 IEEE Globecom Conference, San Francisco, Nov. 27 – Dec. 1, 2006
  • [T5] C. Papadias and O. Alrabadi, "Beam-space MIMO: From classical arrays to miniaturized parasitic realization," tutorial given at the Wireless ViTAE conference, Aalborg, Denmark, May 17, 2009.
  • [T6] C. B. Papadias, O. Alrabadi and A. Kalis, “Antenna Arrays with Parasitic Elements: a Technology for Compact MIMO Systems,” tutorial given at the 2nd International Symposium on Applied Sciences in Biomedical and Communication Technologies Bratislava, Slovak Republic, Nov. 24, 2009.
  • [T7] C. B. Papadias, “Compact Antenna Systems,” tutorial given at the 3rd International Symposium on Applied Sciences in Biomedical and Communication Technologies, Rome, Italy, Nov. 7, 2010.

Short courses

  • [S1] A. Paulraj, C. B. Papadias et al., “Antenna Array Signal Processing with Applications to Mobile Communications,” short course given at the “Second Workshop on Smart Antennas in Wireless Mobile Communications”, Stanford University, July 22, 1995.
  • [S2] A. Paulraj, C. B. Papadias et al., “Space-Time Processing in Wireless Communications,” short course and paper, given at the “Third Workshop on Smart Antennas in Wireless Mobile Communications”, Stanford University, July 26, 1996.
  • [S3]  C. B. Papadias, “Multiple antenna techniques for wireless systems,” short course taught at Aalborg University, Aalborg, Denmark, Dec. 2006 and Dec. 2008.

CHAIRED SESSIONS

  • [1] 28th Annual Asilomar Conference on Signals, Systems, and Computers, Nov. 2, 1994. Chaired the poster session WA8a (equalization).
  • [2] Third Workshop on Smart Antennas in Wireless Mobile Communications, Stanford University, July 26, 1996. Chaired the first oral presentation session.
  • [3] 13th International Conference on Digital Signal Processing, Santorini, Greece, July 2-4, 1997. Organized and chaired the special session “Signal Processing Techniques for Wireless Communications”.
  • [4] Sixth Workshop on Smart Antennas in Wireless Mobile Communications, Stanford University, July 22, 1999. Chaired session IV.
  • [5] 2000 Conference on Information Sciences and Systems (CISS-2000), March 15-17, 2000. Co-chaired and organized the session “Signal Processing for Wireless Communications I”.
  • [6] 2000 IEEE International Symposium on Information Theory (ISIT ’2000),” Sorrento, Italy, June 25-30, 2000. Chaired the session “Signal Processing I”.
  • [7] 2001 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP-2001), chaired the session “Constant Modulus Algorithms.”
  • [8] 2003 International Conference on Communications (ICC 2003), chaired the session CT5 “Space-Time Coding and Unknown Channels.”
  • [9] 2003 Information Society Technologies (IST) Mobile Communications Summit, chaired session on MIMO techniques.
  • [10] 2003 Globecom Conference (Globecom ’03), chaired session WC-31, “Multiple Carrier & Antenna Systems II.”
  • [11] 2004 Globecom Conference (Globecom ’04), chaired session on interference cancellation.
  • [12] 2005 ICASSP Conference (ICASSP ’05), chaired session on MIMO channel estimation.
  • [13] 12th European Wireless Conference (EW2006), Athens, Greece, April 2-5, 2006: chaired session A5 on Smart Antennas, MIMO and Beamforming.
  • [14] 15 th IST Mobile Summit, Mykonos, Greece, June 4-8, 2006: chaired session "MIMO Systems I".
  • [15] 4th IFIP Conference on Artificial Intelligence Applications & Innovations (AIAI 2007), Sept 19-21, 2007, chaired session "Applications of AI in Communications and Networks."
  • [16] Co-organized and co-chaired the special session "Multiuser & Multi-cell MIMO Techniques" at the 18th Annual Symposium on Personal Indoor and Mobile Radio Communications (PIRMC 2007) was recently held in Athens, Greece (Athens Hilton, September, 3-7, 2007).
  • [17] Chaired the session "MIMO I" at the 18th Annual Symposium on Personal Indoor and Mobile Radio Communications (PIRMC 2007) held in Athens,Greece, Sept. 3-7, 2007.
  • [18] Co-organized the “Show and Tell” session of ICASSP 2008, which was held in Las Vegas, April 2, 2008.
  • [19] Chaired the special session on Cognitive Radio Techniques (SS3) at PIMRC 2010, Sept. 27, 2010.

MASTERS THESES SUPERVISED

  • Nikos Lolakas and Theodore Kafantaris, “Multi-Antenna Downlink Communication Techniques for Multiple User Channels,” MSITT Masters Thesis, successfully submitted Nov. 3, 2006.
  • Osama Alrabadi, “Multi-Input Multi-output techniques for ESPAR antennas and the concept of radioation pattern modulation,” MSITT Masters Thesis, successfully submitted Oct. 2007.
  • Othon Tzamtzis, “Throughput and Delay Enhancements in 2-Dimensional Wireless Multihop Networks by Use of Directional Antennas,” MSITT Masters Thesis, successfully submitted May 6, 2008.
  • Lemonia Dritsoula,  “On the Role of Directional Antennas in Wireless Multi-hop Communications,” MSITT Masters Thesis, successfully submitted Spring Semester, 2009.
  • Yiannis Davillis, “Unsupervised Cross-Polarization Interference Cancellation (XPIC) for High Capacity Wireless Transmission Systems,” MSITT Masters Thesis, successfully submitted Spring Semester, 2009.
  • Sultan Dweikat (co-supervised with S. Vassilaras), “System-level Capacity Evaluation of WiMAX cellular Networks,” MSITT Masters Thesis, successfully submitted Spring Semester, 2009.
  • Elpiniki Tsakalaki, "Uplink Outage Sum Rate Maximization for Correlated MIMO Channels via an Adaptive Antenna System,” MSIN Masters Thesis, successfully submitted Summer Semester, 2009.
  • Chamath Divarathne, “MIMO Transmission over Indoor Wireless Testbed,” MSIN Masters Thesis,  successfully submitted Fall Semester, 2009.
  • Idlir Xhixho, “Evaluation of Smart Antenna Techniques in the LTE Standard,” MSITT Masters Thesis, successfully submitted Fall Semester, 2009. 
  • Keshav Singh, “MIMO Reception Techniques for Over-the-Air Transmission in MMDS Frequencies,” MSITT Masters Thesis, successfully submitted Nov. 6, 2009. 
  • Anna Vanyan, “Performance Evaluation of Cross-Layer Techniques for Wireless Communication Transceivers,” MSITT Masters Thesis, successfully submitted September 22, 2010.
  • Victor Khoury  (mainly supervised by S. Vassilaras), “CR-DMAC - A MAC Protocol for Cognitive Radio Networks with Directional Antennas, ” MSIN Masters Thesis, successfully submitted April 8, 2011.
  • Hadi Ghauch, “Interference Alignment for Cellular Networks with Multiantenna Terminals,” MSIN Masters Thesis, successfully submitted April 8, 2011.
  • Katty M. Acuna,  “Interference Alignment over Ricean MIMO Channels,” MSITT Masters Thesis, successfully submitted August 23, 2011.

PhD THESES SUPERVISED

  • Osama Alrabadi (Aalborg University), Jan. 1, 2008 - Jan 28, 2011: "MIMO Transceiver Techniques with Parasitic Antenna Arrays" (co-supervised by Prof. A. Kalis at AIT and Prof. R. Prasad at Aalborg University). Defended successfully and title awarded by Aalborg University on Jan. 28, 2011.
  • Elpiniki Tsakalaki (Aalborg University), Sept. 1, 2009 - Sept. 7, 2012: "Smart Antenna-Enabled Cognitive Radio Transmission Techniques" (co-supervised by Prof. R. Prasad at Aalborg University), Defended successfully and title awarded by Aalborg University on Sept. 7, 2012.
  • Bo Han (Aalborg University), Sept. 1, 2010 - Jan 10, 2014: "Transceiver Techniques for Low Complexity Wireless Communication Systems" (co-supervised by Prof. A. Kalis and Prof. R. Prasad at Aalborg University), Defended successfully and title awarded by Aalborg University on Jan. 10 2014.

PARTICIPATION IN EXTERNAL PhD EXAMINATION COMMITTEES

  • Luc Deneire, Ecole Nationale Supérieure des Telecommunications (ENST).  I served as examiner in this thesis. Thesis entitled: “Estimation aveugle de canal et accès multiple par répartition spatiale,” presented successfully, Eurécom Institute, Dec. 21, 1998.
  • Jonathan Ling, Stevens Institute of Technology. Thesis entitled “Channel prediction for Downlink Packet Data Systems,” presented successfully, Nov. 19, 2007.
  • José Lopez-Salcedo, University of Catalonia (UPC). Thesis entitled “Coherent and Non-Coherent Ultra-Wideband Communications,” presented successfully, March 28, 2007.
  • Nizar Zorba Barah, Polytechnic University of Catalonia (UPC). Thesis entitled “Multibeam opportunistic downlink beamforming in wireless communication systems,” presented successfully, Dec. 10, 2007.
  • Marios Kountouris, Ecole Nationale Supérieure des Télécommunications (ENST). I actually serve as “Rapporteur” in this thesis. Thesis entitled: “Multiuser Multi-antenna Systems with Limited Feedback,” presented successfully, Eurécom Institute, Jan. 10, 2008.
  • Steredenn Daumont, Université de Rennes 1.  I served as “Rapporteur” in this thesis. Thesis entitled: “Techniques de démodulation aveugle en interception de signaux MIMO,” presented successfully, Supélec, Rennes, Dec. 4, 2009.
  • Bassem Zayen, Ecole Nationale Supérieure des Télécommunications (ENST). I served as “Rapporteur” in this thesis. Thesis entitled: “Spectrum Sensing and Resource Allocation Strategies for Cognitive Radio,” presented successfully, Eurécom Institute, Nov. 19, 2010.
  • Mustapha Amara, Ecole Nationale Supérieure des Télécommunications (ENST). I served as “Rapporteur” in this thesis. Thesis entitled: “Linear Precoding for Capacity maximization in MU-MIMO BC Channels,” presented successfully, Eurécom Institute, June 28, 2011.
  • Liang Li, Technical University of Darmstadt. I served as “Korreferent” and examiner of the thesis. Thesis entitled: “Transmit and Multiuser Diversity Techniques in Wireless Communications,” presented successfully, TU Darmstadt, Germany,  Feb. 7, 2012 .
  • Benjamín Béjar Haro, Universidad Politécnica de Madrid (UPM). I served as External Examiner of the thesis. Thesis entitled: “Distributed collaborative processing in wireless sensor networks with application to target localization and beamforming,” presented successfully, UPM, Madrid,   Sept. 2012.
  • Pekka Jänis, Aalto University, Finland. I served as External Examiner (Opponent) of the thesis. Thesis entitled: “Interference Management Techniques for Cellular Wireless Communication Systems,” presented successfully, July 5, 2013.
  • Miguel Ángel Vázquez, Polytechnic University of Catalonia (UPC). Thesis entitled “Beamforming Design and Power Control for Spectrum Sharing Systems,” presented successfully, Jan. 24, 2014.
  • Mohsen Rezaee Kheirabadi, Technischen Universität Wien. Thesis entitled “Interference Management Techniques with Imperfect Channel State Information at the Transmitter,” to be presented, May 19, 2014.

PUBLICATIONS

Appeared / accepted journal articles

  • [J1] C. B. Papadias and D. T. M. Slock, “Normalized Sliding Window Constant Modulus and Decision-Directed Algorithms for Blind Equalization: a Link Between Blind Equalization and Classical Adaptive Filtering,” IEEE Transactions on Signal Processing, vol. 45, No. 1, pp. 231-235, Jan. 1997.
  • [J2] A. Paulraj and C. B. Papadias, “Space-Time Processing for Wireless Communications,” IEEE Signal Processing Magazine, vol. 14, No. 6, pp. 49-83, Nov. 1997.
  • [J3] M. C. Vanderveen, C. B. Papadias and A. Paulraj, “Joint Angle and Delay Estimation (JADE) for Multipath Signals Arriving at an Antenna Array,” IEEE Communications Letters, vol. 1, No. 1, pp. 12-14, Jan. 1997.
  • [J4] V. U. Reddy, C. B. Papadias and A. Paulraj, “Blind Identifiability of Certain Classes of Multipath Channels for Second-Order Statistics Using Antenna Arrays,” IEEE Signal Processing Letters, vol. 4, No. 5, pp.138-141, May 1997.
  • [J5] C. B. Papadias and A. Paulraj, “A Constant Modulus Algorithm for Multi- User Signal Separation in Presence of Delay Spread Using Antennas Arrays,” IEEE Signal Processing Letters, vol. 4, No. 6, pp. 178-181, June 1997.
  • [J6] C. B. Papadias and D. T. M. Slock, “Fractionally Spaced Equalization of Linear Polyphase Channels and Related Blind Techniques Based on Multichannel Linear Prediction,” IEEE Trans. Signal Processing, vol. 47, No. 3, pp. 641-654, March 1999.
  • [J7] J. Chen, C. Papadias, J. Foschini, “Dynamic Signature Assignment for Direct- Spread CDMA Systems,” IEEE Communications Letters, vol. 4, No. 6, pp. 181-183, June 2000.
  • [J8] C. Papadias, “Globally Convergent Blind Source Separation Based on a Multiuser Kurtosis Maximization Criterion,” IEEE Trans. Signal Processing, vol. 48, No. 12, pp. 3508-3519, Dec. 2000.
  • [J9] B. Hochwald, T. Marzetta, C. Papadias, “A Transmitter Diversity Scheme for Wideband CDMA Systems Based on Space-Time Spreading,” IEEE Journal on Selected Areas in Communications (J-SAC), Special Issue on Wideband CDMA (II), vol. 19, No. 1, pp. 48-60, Jan. 2001.
  • [J10] C. Papadias and H. Huang, “Linear Space-Time Multiuser Detection for Multipath CDMA Channels,” IEEE Journal on Selected Areas in Communications (JSAC), pp. 254-265, vol. 19, No. 2, Feb. 2001.
  • [J11] A. Lozano, C. Papadias, “Space-Time Receivers for High Spectral Efficiency Wireless Communication in Frequency-Selective Channels,” IEEE Trans. on Communications, pp. 65-73, vol. 50, No. 1, Jan. 2002.
  • [J12] C. B. Papadias and G. J. Foschini, “On the Capacity of Certain Space-Time Coding Schemes,” EURASIP Journal on Applied Signal Processing, special issue on Space-Time Coding and its Applications, pp. 447-458, vol. 5, May 2002.
  • [J13] N. Sharma and C. B. Papadias, “Improved Quasi-Orthogonal Codes through Constellation Rotation,” IEEE Trans. Communications, vol. 51, No. 3, pp. 332-335, March 2003.
  • [J14] C. B. Papadias and G. J. Foschini, “Capacity-Approaching Space-Time Codes for Systems Employing Four Transmitter Antennas,” IEEE Trans. on Information Theory, vol. 49, No. 3, pp. 726-732, March 2003.
  • [J15] D. Samardzija, C. B. Papadias and R. Valenzuela, “Experimental Evaluation of Unsupervised Channel Deconvolution for Wireless Multiple-Transmitter / Multiple-Receiver Systems,” IEE Electronics Letters, pp. 1214-1216, vol. 38, No. 20, Sept. 2002.
  • [J16] G. J. Foschini, D. Chizhik, M. J. Gans, C. Papadias and R. A. Valenzuela, “Some Basic Layered Space-Time Architectures and their Performance,” IEEE Journal on Selected Areas in Communications, special issue on MIMO systems and applications, vol. 21, No. 3, pp. 303-320, March 2003.
  • [J17] J. Ling, D. Avidor, D. Furman, C. Papadias, “On the Financial Impact of Multiple Antenna Systems to Wireless CDMA Operators,” IEEE Wireless Communications Magazine, special issue on “(R)Evolution towards 4G Mobile Communication Systems,” vol. 10, No. 4, pp. 62-65, August 2003.
  • [J18] C. B. Papadias, “Unsupervised Receiver Processing Techniques for Linear Space-Time Equalization of Wideband Multiple Input / Multiple Output Channels,” IEEE Transactions on Signal Processing, vol. 52, No. 2, pp. 472 - 482, Feb. 2004.
  • [J19] J. Chen, C. Papadias, J. Foschini, “Space-Time Dynamic Signature Assignment for the Reverse-Link of DS-CDMA Systems,” IEEE Transactions on Communications, vol. 52,No. 1,Jan. 2004, pp. 120-129.
  • [J20] N. Sharma and C. Papadias, “Full Rate Full Diversity Linear Quasi-Orthogonal Space-Time Codes for any Transmit Antennas,” EURASIP Journal on Applied Signal Processing, special issue on “Advances in Smart Antennas,” vol. 9, pp. 1246-1256, 2004.
  • [J21] D.I. Axiotis, T. Al-Gizawi, K. Peppas, E. N. Protonotarios, F. I. Lazarakis, C. Papadias, P. I. Philippopoulos, “Services and Architectures for Interworking 3G and WLAN Networks,” IEEE Wireless Communications Magazine, special issue on “Applications and Services for the B3G/4G era,” vol. 11, no. 5, Oct. 2004
  • [J22] D. Samardzija, A. Lozano, C. Papadias, “Design and Experimental Validation of MIMO Multiuser Detection for Downlink Packet Data,” EURASIP Journal on Applied Signal Processing, special issue on “System-Integration-Oriented Transceiver Designs for Wireless Networks Beyond 3G,” pp. 1769-1777, vol. 2005, No. 11, Nov. 2005.
  • [J23] A. Alexiou, D. Avidor, P. Bosch, S. Das, P. Gupta, B. Hochwald, T. E.Klein, J. Ling, A. Lozano, T. Marzetta, S. Mukherjee, S. Mullender, C. Papadias, R. Valenzuela, H. Viswanathan, “Duplexing, Resource Allocation and Intercell Coordination-Design Recommendations for Next Generation Systems,” Wiley Wireless Communications and Mobile Computing, special issue on “Emerging Access Technologies,” vol. 5, pp. 77-93, May, 2005.
  • [J24] N. Sharma and C. Papadias, “Reduced complexity ML Decoding of Rate 6/8 and Rate 1 Linear Complex Space-Time codes for up to 8 Transmit Antennas with Phase Feedback,” IEEE Signal Processing Letters, vol. 12, No. 8, pp. 565-568, August, 2005.
  • [J25] A. Alexiou and C. Papadias, “Reconfigurable MIMO transceivers for Next- Generation Wireless Systems,” Bell Labs Technical Journal, vol. 10, No. 2, pp.139-156, August 2005.
  • [J26] T. Kaiser, A. Bourdoux, S. Choi, A. Fuertes, B. Ottersten, C. Papadias, S. Paul, A. Paulraj and J. Winters, “When will smart antennas be ready for the market? Part I,” IEEE Signal Processing Magazine, (DSP forum), pp. 87-92, March 2005.
  • [J27] T. Kaiser, A. Bourdoux, S. Choi, A. Fuertes, B. Ottersten, C. Papadias, S. Paul, A. Paulraj and J. Winters, “When will smart antennas be ready for the market? Part II,” IEEE Signal Processing Magazine, (DSP forum), vol. 22, No. 6, pp. 174-176, Nov. 2005.
  • [J28] A. Kuzminskiy, H. Karimi, D. Morgan. C. Papadias, D. Avidor and J. Ling, “Downlink Throughput Enhancement of IEEE 802.11a/g Using SDMA with a Multi- Antenna Access Point,” EURASIP Signal Processing, special issue on Advances in Signal Processing-assisted cross layer Designs, No. 86, Issue 2, pp. 1896-1910, Dec. 2005 (ISSN: 0165-1684).
  • [J29] S. Mukherjee, D. Avidor, J. Ling, and C. Papadias, “On Asymptotically Fair Transmission Scheduling Over Fading Channels with Measurement Delay,” IEEE Transactions on Wireless Communications, vol. 5, No. 7, pp. 1626-1633, July 2006.
  • [J30] A. M. Kuzminskiy, F. J. Mullany, and C. B. Papadias, “Steered-STS Transmit Antenna Architecture with Semi-blind Channel Estimation at the Receiver in CDMA2000,” IEEE Transactions on Vehicular Communications, vol. 55, No. 5, pp. 1671-1677, Sept. 2006.
  • [J31] A. Kalis, A. G. Kanatas and C. B. Papadias, “A novel approach to MIMO transmission using a single RF front end,” IEEE Journal on Selected Areas in Communications (J-SAC), vol. 26, No. 6, August, 2008, pp. 972-980.
  • [J32] J. Ling, U. Turelli, D. Chizhik, C. B. Papadias, “Rician Modeling and Prediction for Wireless Downlink Packet Systems,” IEEE Transactions on Vehicular Technology, vol. 7, No. 11, Nov. 2008, pp. 4692-4699.
  • [J33] V. Varousis, A. G. Kanatas, A. Kalis and C. B. Papadias, “A Stochastic Algorithm for Beamforming using ESPAR Antennas," IEEE Antennas and Wireless Propagation Letters, vol. 7, pp. 745-748, 2009.
  • [J34] O. Alrabadi, C. B. Papadias, A. Kalis, N. Marchetti and R. Prasad, “MIMO transmission and Reception Techniques Using Three Element ESPAR Antennas”, IEEE Communications Letters, vol. 13, No. 4, pp. 236-238, April 2009.
  • [J35] O. Alrabadi, C. B. Papadias, N. Marchetti, A. Kalis and R. Prasad, "Spatial Multiplexing via Antenna Switching," IEEE Communication Letters, vol. 13, No. 8, August 2009.
  • [J36] O. Alrabadi, C. B. Papadias, A. Kalis and R. Prasad, “A Universal Encoding Scheme for MIMO Transmission Using a Single RF-Fronted”, IEEE Transactions on Wireless Communications, vol. 8, No. 10, pp. 5133-5143, Oct. 2010.
  • [J37] A. Vgenis, C. S. Petrou, C. B. Papadias, I. Roudas and L. Raptis, “Nonsingular Constant Modulus Equalizer for PDM-QPSK Coherent Optical Receivers,” IEEE Photonics Technology Letters, Vol. 22, No. 1, pp. 45-47, Jan. 2010.
  • [J38] C. Rizogiannis, E. Kofidis, C. B. Papadias and S. Theodoridis, “Semi-Blind Maximum Likelihood Joint Channel / Data Estimation for Correlated Channels in Multiuser MIMO Networks,” Signal Processing, vol. 90, pp. 1209-1224, 2010.
  • [J39] E. P. Tsakalaki, O. N. Alrabadi, C. B. Papadias, R. Prasad, “Spatial spectrum sensing for wireless handheld terminals: design challenges and novel solutions based on tunable parasitic antennas,” IEEE Wireless Communications Magazine, special issue on Dynamic Spectrum Management in Wireless Networks, vol. 17, no. 4, pp. 33-40, Aug. 2010.
  • [J40] O. N. Alrabadi, C. Divarathne, P. Tragas, A. Kalis, N. Marchetti, C. B. Papadias, and Ramjee Prasad, “Spatial Multiplexing with a Single Radio: Proof-of-Concept Experiments in an Indoor Environment with a 2.6-GHz Prototype,” IEEE Communications Letters, vol. 15, No. 2, pp. 178-180, Feb. 2011.
  • [J41] A. Kortun, T. Ratnarajah, M. Sellathurai, Caijun Zhong, C. B. Papadias, “On the Performance of Eigenvalue-based Cooperative Spectrum Sensing for Cognitive Radio,” IEEE Journal of Selected Topics in Signal Processing, vol. 5, No. 1, pp. 49–55, Feb. 2011.
  • [J42] M. Dohler, R. W. Heath Jr., A. Lozano, C. B. Papadias, and R. A. Valenzuela, “Is the PHY Layer Dead?,” IEEE Communications Magazine, vol. 49, No. 4, pp. 159-165, April, 2011. 
  • [J43] E. P. Tsakalaki, O. N. Alrabadi, C. B. Papadias, R. Prasad, “Adaptive reactance-controlled antenna systems for MIMO applications,” IET Microwaves, Antennas & Propagation Journal, Special Issue on RF / Microwave Communication Subsystems for Emerging Wireless Technologies, vol. 5, Iss. 8, pp. 975-984, June 2011.
  • [J44] E. P. Tsakalaki, O. N. Alrabadi, A. Kalis, C. B. Papadias, R. Prasad, “Non cooperative space time communication for energy efficiency in sensor networks,” IEEE Transactions on Communications, to appear, 2011.
  • [J45] H. Du, T. Ratnarajah, M. Pesavento, C. B. Papadias,  “Joint transceiver beamforming in MIMO cognitive radio network via second-order cone programming,” IEEE Transactions on Signal Processing, to appear, 2012. 
  • [J46] E. P. Tsakalaki, O. N. Alrabadi, C. B. Papadias, R. Prasad, “Reduced-complexity radio architectures for enhanced receive selection combining in multiuser diversity systems,” International Journal of Antennas and Propagation, Special Issue on MIMO Antenna Design and Channel Modeling, vol. 2012, Article ID 454210,2012.
  • [J47] D. Wilcox, E. P. Tsakalaki, A. Kortun, T. Ratnarajah, C. B. Papadias, M. Sellathurai, “On spatial domain cognitive radio using single-radio parasitic antenna arrays,” IEEE Journal on Selected Areas in Communications (J-SAC), vol. 31, No. 3, pp. 571-580, March 2013.
  • [J48] G. C. Alexandropoulos and C. B. Papadias, “A reconfigurable iterative algorithm for the K-user MIMO interference channel,” Signal Processing (Elsevier), Special Issue on Advances in Sensor Array Processing, vol. 93, No. 12, pp. 3353–3362, Dec. 2013.
  • [J49] H. Du, T. Ratnarajah, M. Sellathurai, C. B. Papadias, “Reweighted nuclear norm approach for interference alignment,” IEEE Transactions on Communications, vol. 61, No. 9, pp. 3754-3765, Sep. 2013.
  • [J50] C. Masouros, T. Ratnarajah, M. Sellathurai, C. B. Papadias, and A. Shukla, “Known interference in the cellular downlink: A performance limiting factor or a source of green signal power?” IEEE Communications Magazine, vol. 51, No. 10, pp. 162-171, Oct. 2013.
  • [J51] B. Han, S. Vassilaras, C. B. Papadias, R. Soman, M. Kyriakides, T. Onoufriou, R. H. Nielsen, and R. Prasad, “Harvesting energy from vibration of the structure,” Journal of Vibration and Control, vol. 19, No. 15, pp. 2255-2269, Nov. 2013.
  • [J52] B. Han, V. Barousis, C. B. Papadias, A. Kalis, R. Prasad, “MIMO over ESPAR with 16-QAM modulation,” IEEE Wireless Communication Letters, vol. 2, No. 6, pp. 687–690, 2013.
  • [J53] V. Barousis and C. B. Papadias, “Arbitrary precoding with single-fed parasitic arrays: closed-form expressions and design guidelines,” IEEE Wireless Communication Letters, vol. 3, No. 2, pp. 229-232, April 2014.

Conference articles

  • [C1] C. B. Papadias and D. T. M. Slock, “Normalized Sliding Window Constant Modulus Algorithms for
    Blind Equalization,” 14th GRETSI Symposium on Signal and Image Processing, Juan-les-Pins, France,
    pp. 507-510, Sept. 13-16, 1993.  
  • [C2] C. B. Papadias and D. T. M. Slock, “On the Convergence of Normalized Constant Modulus Algorithms for Blind Equalization,” Proc. DSP International Conference on Digital Signal Processing, Nicosia, Cyprus, pp. 245-250, July 14-16, 1993.
  • [C3] C. B. Papadias and D. T. M. Slock, “New Adaptive Blind Equalization Algorithms for Constant Modulus Constellations,” International Conference on Acoustics, Speech and Signal Processing (ICASSP-94), volume 3, pp. 321-324, Adelaide, Australia, April 19-22, 1994.
  • [C4] C. B. Papadias and D. T. M. Slock, “A Bilinear Approach to Constant Modulus Blind Equalization,” ATHOS, ESPRIT Basic Research Working Group # 6620, System Identification and High Order Statistics, I3S, CNRS, Sophia Antipolis, September 20-21, 1993.
  • [C5] C. B. Papadias and D. T. M. Slock, “Towards Globally Convergent Blind Equalization of Constant Modulus Signals: a Bilinear Approach,” EUSIPCO ’94.
  • [C6] D. T. M. Slock and C. B. Papadias, “Blind Fractionally-Spaced Equalization Based on Cyclostationarity,” IEEE/VTS 44th Vehicular Technology Conference (VTC-94), Stockholm, Sweden, June 1994.
  • [C7] C. B. Papadias and D. T. M. Slock, “On the Decision-Directed Equalization of Constant Modulus Signals,” 28th Annual Asilomar Conference on Signals, Systems and Computers, Oct. 31-Nov. 2, 1994, Pacific Grove, California.
  • [C8] D. T. M. Slock and C. B. Papadias, “Blind Radio Channel Identification and Equalization Based on Oversampling and/or Antenna Arrays,” COST 229 Workshop, Vigo, Spain, 1994.
  • [C9] D. T. M. Slock and C. B. Papadias, “Further Results on Blind Identification and Equalization of Multiple FIR Channels,” in Proc. Int’l Conference on Acoustics, Speech and Signal Processing, Detroit, Michigan, May 8-12, 1995.
  • [C10] C. B. Papadias and A. Paulraj, “Decision-Feedback Equalization and Identification nof Linear Channels Using Blind Algorithms of the Bussgang Type,” 29th Annual Asilomar Conference on Signals, Systems and Computers, Oct. 30-Nov. 1, 1995, Pacific Grove, California.
  • [C11] C. B. Papadias and A. Paulraj, “A Space-Time Constant Modulus Algorithm for SDMA Systems,” IEEE/VTS 46th Vehicular Technology Conference (VTC-96), April 28-May 1, 1996, Atlanta, GA, USA.
  • [C12] M. C. Vanderveen, B. C. Ng, C. Papadias, A. Paulraj, “Joint Angle and Delay Estimation (JADE) for Signals in Multipath Environments,” 30th Asilomar Conference on Signals, Systems, and Computers, Nov. 3-6, Pacific Grove, CA.
  • [C13] C. B. Papadias, “ On the Existence of Undesirable Global Minima of Godard Equalizers,” International Conference on Acoustics, Speech, and Signal Processing (ICASSP-97), pp. 3941-3944, May 1997, Munich, Germany.
  • [C14] V. U. Reddy, C. Papadias and A. Paulraj, “Second-Order Blind Identifiability of Certain Classes of Multipath Channels Using Antenna Arrays,” International Conference on Acoustics, Speech, and Signal Processing (ICASSP-97), pp. 3465-3468, May 1997, Munich, Germany.
  • [C15] A. Paulraj and C. Papadias, “Space-Time Signal Processing forWireless Communications: a Survey,” SPAWC Workshop, Paris, April 1997.
  • [C16] C. B. Papadias and A. J. Paulraj, “Blind separation of independent co-channel signals,” 13th International Conference on Digital Signal Processing, pp. 139-142, July 2-4, Santorini, Greece.
  • [C17] C. B. Papadias and A. J. Paulraj, “On the Blind Separability of Multiple User Signals in the Presence of Delay Spread,” 31st Asilomar Conference on Signals, Systems, and Computers, Nov. 2-5, 1997.
  • [C18] D. Gesbert, C. B. Papadias and A. J. Paulraj, “Blind Equalization of Polyphase FIR Channels. AWhitening Approach ,” 31st Asilomar Conference on Signals, Systems, and Computers, Nov. 2-5, 1997.
  • [C19] C. B. Papadias, “Second-Order-Based Blind Separation of Multiple User Signals Transmitted through FIR MIMO Channels,” International Conference on Telecommunications (ICT-98), to be held in Chalkidiki, Greece, June 22-25, 1997.
  • [C20] C. Papadias, H. Huang, L. Mailaender, “Adaptive Multi-User Detection of Fading CDMA Channels Using Antenna Arrays,” 32nd Asilomar ’98 Conference on Signals, Systems and Computers, Pacific Grove, CA, Nov. 1-4, 1998.
  • [C21] C. Papadias and M. Rupp, “Performance Analysis of Unbiased Finite-Length DFE Receivers,” 32nd Asilomar ’98 Conference on Signals, Systems and Computers, Pacific Grove, CA, Nov. 1-4, 1998.
  • [C22] C. Papadias, D. Gesbert, A. Paulraj, “Direct Second Order Blind Equalization of Polyphase Channels Based on a Decorrelation Criterion,” International Conference on Acoustics, Speech, and Signal Processing (ICASSP’99), Phoenix, AZ, May 15-19, 1999.
  • [C23] H. Huang and C. Papadias, “Minimum Mean-Squared Error Space-Time Multiuser Receivers for Wireless CDMA Systems,” Global Conference on Communications (GLOBECOM’98), Sydney, Australia, Nov. 8-12, 1998.
  • [C24] H. Huang and C. Papadias, “Linear Space-Time Multiuser Receivers for Wireless CDMA Systems,” 9th IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC ’98), Boston, MA, Sept. 8-11, 1999.
  • [C25] J. Chen, C. Papadias, J. Foschini, “Dynamic Signature Assignment for Reverse-Link CDMA Systems,” International Conference on Communications (ICC-99),Vancouver, Canada, June 6-10, 1999.
  • [C26] B. Hochwald, T. Marzetta, C. Papadias, “A Novel Space-Time Spreading Scheme for Wireless CDMA Systems,” 37th annual Allerton Conference on Communication, Control, and Computing, Urbana, Illinois, Sept. 22-24, 1999.
  • [C27] C. Papadias, “On the Spectral Efficiency of Space-Time Spreading Schemes for Multiple Antenna CDMA Systems,” 33rd Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, Oct. 24-27, 1999.
  • [C28] C. Papadias, B. Hochwald, T. Marzetta, M. Buehrer, R. Soni, “Space-Time Spreading for CDMA Systems,” 6th workshop on Smart Antennas in Wireless Mobile Communications, Stanford University, Stanford, CA, July 22-23, 1999.
  • [C29] C. Papadias, “Blind Signal Separation in Narrow Band BLAST Systems,” CISS-2000 Conference, Princeton, NJ, March 15-17, 2000.
  • [C30] C. Papadias, “A Multi-User Kurtosis Algorithm for Blind Source Separation,” International Conference on Acoustics, Speech, and Signal Processing (ICASSP ’2000), Istanbul, Turkey, June 5-9, 2000.
  • [C31] C. Papadias, “Blind Source Separation Based on Multi-User Kurtosis Criteria,” International Symposium on Information Theory (ISIT ’2000), Sorrento, Italy, June 25-30, 2000.
  • [C32] C. Papadias, “Globally Convergent Algorithms for Blind Source Separation,” X European Signal Processing Conference (EUSIPCO-2000), Tampere, Finland, Sept. 4-8, 2000.
  • [C33] A. Lozano, C. Papadias, “Space-Time Receiver for Wideband BLAST in Rich- Scattering Wireless Channels,” VTC’2000 Conference, Tokyo, Japan, May 2000.
  • [C34] H. Huang, C. Papadias, A. Lozano, “Spectral Efficiency of CDMA Systems with Transmit and Receive Antenna Arrays,” WCNC 2000 Conference, September 23-28, 2000, Chicago, Illinois.
  • [C35] C. Papadias, “New Processing Techniques for Wide-Band BLAST Systems,” 33rd Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, Oct. 29 - Nov. 1, 2000.
  • [C36] C. Papadias and J. Foschini, “Open-Loop Transmit Diversity Technique for Systems Employing Four Transmitter Antennas,” International Conference on Acoustics,
    Speech, and Signal Processing (ICASSP-2001), special session on space-time coding, Salt Lake city, May 7-11, 2001.
  • [C37] D. Samardzija, C. Papadias, and R. Valenzuela, “Experimental Evaluation of Unsupervised Channel Deconvolution for Wireless Multiple-Transmitter/Multiple- Receiver Systems,” IEEE Globecom 2001 Conference, San Antonio, Texas, USA, Nov. 25-29, 2001.
  • [C38] N. Sharma and C. Papadias, “Improved Quasi-Orthogonal Codes,” IEEE Wireless Communications and Networking Conference (WCNC 2002), Orlando, FL, USA, 17-21, March, 2002.
  • [C39] N. Sharma and C. Papadias, “Improved Quasi-Orthogonal Codes Through Constellation Rotation,” 2002 International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2002), Orlando, Florida, USA, May 13-17, 2002.
  • [C40] F. Lazarakis, A. Alexiou, S. Buljore, C. Papadias, M. Lamarca, K. Vlahodimitropoulos, C. Borja, J. Kruys, “The IST FITNESS project: Interoperability of UMTS and HIPERLAN/2 with Re-configurable Multiple Receive Multiple Transmit Antennas,” IST Mobile and Wireless Telecommunications Summit 2002, Thessaloniki, Greece, June 16-19, 2002.
  • [C41] A.M.Kuzminskiy, C. Papadias, “Linear Filtering Versus ML-based Detection for Smart Antennas in OFDM under Interference Limited Scenarios,” in Proc. Wireless World Research Forum, Tempe, March 2002.
  • [C42] A.M.Kuzminskiy, C. B. Papadias, “Asynchronous Interference Cancellation with an Antenna Array,” in Proc. IEEE 13th PIMRC, Lisbon, Sept. 2002.
  • [C43] A.M.Kuzminskiy, C. B. Papadias, “Re-configurable Semi-blind Cancellation of Asynchronous Interference with an Antenna Array,” 2003 International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2003), Hong-Kong, April 6-10, 2003. Presented also at IEEE Workshop on Neural Networks for Signal Processing, Toulouse, France, Sept. 2003.
  • [C44] N. Sharma and C. B. Papadias, “Full Rate Full Diversity Linear Quasi-Orthogonal Space-Time Codes for Any Transmit Antennas,” 41st annual Allerton Conference on Communication, Control, and Computing, Urbana, Illinois, Oct. 1-3, 2003.
  • [C45] S. Mukherjee, D. Avidor, J. Ling, and C. Papadias, “The Proportional Fair Scheduler in a Cellular Wireless Environment,” 10th Wireless World Research Forum Meeting,” Oct. 27-28, 2003, New York, USA.
  • [C46] C. Papadias and A. Kuzminskiy, “Blind Source Separation with Randomized Gram-Shmidt Orthogonalization for Short-Burst Systems,” to appear, 2004 International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2004), Montreal, Quebec, Canada, May 17-21, 2004.
  • [C47] Y.-N. Lee, H.-H. Chen, C.-K. Wen, J.-T. Chen, C. Papadias, “Spectrum efficiency of MIMO multiple-access wireless systems exploring only spatial correlations: an asymptotic approach,” 2004 International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2004), Montreal, Quebec, Canada, May 17-21, 2004.
  • [C48] N. Sharma and C. B. Papadias, “High Rate Quasi-Orthogonal Space-Time Codes for any Transmit Antennas,” CISS-2004 Conference, Princeton, NJ, March 17-19, 2004.
  • [C49] D. Avidor, J. Ling, and C. Papadias, “Jointly Opportunisitic Beamforming and Scheduling for Downlink Packet Access,” International Conference on Communications (ICC-2004), Paris, France, June 20-24, 2004.
  • [C50] C.-K. Wen, Y.-N. Lee, J.-T. Chen, C. Papadias, and P. Ting, “Performance Analysis of MIMO Wireless Systems with Sparially-Correlated Channels - Part I: Joint Decoding,” International Conference on Communications (ICC-2004), Paris, France, June 20-24, 2004.
  • [C51] Y.-N. Lee, C.-K. Wen, J.-T. Chen, C. Papadias, and P. Ting, “Asymptotic Spectral Efficiency of MIMO Wireless Multiple-Access Wireless Systems Exploring Only Channel Spatial Correlations,” International Conference on Communications (ICC-2004), Paris, France, June 20-24, 2004.
  • [C52] C.-K. Wen, Y.-N. Lee, J.-T. Chen, C. Papadias, and P. Ting, “Performance Analysis of MIMO Wireless Systems with Sparially-Correlated Channels – Part II: Separate Decoding,” International Conference on Communications (ICC-2004), Paris, France, June 20-24, 2004.
  • [C53] A. Alexiou, D. Avidor, P. Bosch, S. Das, P. Gupta, B. Hochwald, T. E. Klein, J. Ling, A. Lozano, T. Marzetta, S. Mukherjee, S. Mullender, C. Papadias, R. Valenzuela, H. Viswanathan , ”Duplexing, Resource Allocation and Inter-Cell Coordination-Design Recommendations for Next Generation Systems”, WWRF11th meeting, Oslo, June 2004.
  • [C54] D. Avidor, J. Ling, S. Mukherjee, C. Papadias, “On some properties of the proportional fair scheduling policy,” IEEE PIMRC, Sept. 2004.
  • [C55] D. Avidor, A. Basu, D. Lin, G. Narlikar, C. Papadias, L. Yagati, “Multihop Wireless Backhaul for Ubiquitous Data Access,” SIGCOMM 2004, Portland, Oregon, Aug. 30 - Sept. 3, 2004.
  • [C56] D. Samardzija, A. Lozano and C. Papadias, “Experimental Validation of MIMO Multiuser Detection for UMTS High-Speed Downlink Packet Access,” IEEE Globecom 2004, Dallas, Texas, Nov. 29 - Dec. 3, 2004.
  • [C57] A. Kuzminskiy, F. Mullany and C. Papadias, “Semi-blind Channel Estimation at the Receiver for Steered-STS Transmit Antenna Architecture in cdma2000,” ICASSP 2005, Philadeplhia, PA, March 20-23, 2005.
  • [C58] A. Kuzminskiy, H. R. Karimi and C. Papadias, “Downlink SDMA for legacy IEEE 802.11a/g mobile stations: Acknowledgement recovery and channel estimation,” The Sixth IEEE International Workshop on Signal Processing Processing Advances for Wireless Communications (SPAWC 2005), New York, NY, pp. 216 - 220, June 5-8, 2005.
  • [C59] A. Kuzminskiy, H. R. Karimi and C. Papadias, “Alternating Time-offset Downlink SDMA for Legacy IEEE 802.11a/g Mobile Stations,” The 13th European Signal Processing Conference (EUSIPCO 2005), Antalya, Turkey, Sept. 4-8, 2005.
  • [C60] A. M. Kuzminskiy, H. R. Karimi, D. Morgan, C. B. Papadias, D. Avidor, and J.Ling, “Downlink SDMA for IEEE 802.11a/g: A means for improving legacy mobile throughput using a multi-antenna access point,” Proc. PIMRC, Berlin, Sept. 2005.
  • [C61] M. Vemula, D. Avidor, J. Ling and C. Papadias, “Inter-Cell Coordination, Opportunistic Beamforming and Scheduling,” 2006 IEEE International Conference on Communications (ICC ‘2006), Istanbul, Turkey, June 11-15, 2006.
  • [C62] J. Ling, D. Chizhik, U. Tureli, C. Papadias, “Performance of Linear Prediction for Wireless Scheduled Downlink Systems,” 2006 IEEE International Conference on Communications (ICC ‘2006), Istanbul, Turkey, June 11-15, 2006.
  • [C63] C. Rizogiannis, E. Kofidis, C. B. Papadias and S. Theodoridis, “Semi-Blind Maximum Likelihood Joint Channel Estimation / Data Detection for MIMO fading channels,” The Seventh IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC 2006), Cannes, France, July 2-5, 2006.
  • [C64] A. Alexiou, K. K. Leung, C. Papadias, A. Valkanas, “MEMBRANE: Multi-Element Multihop Backhaul Reconfigurable Antenna Network,” The 15th IST Mobile & Wireless Communications Summit, Mykonos, Greece, June 4-8, 2006.
  • [C65] A. Kalis, A. Kanatas and C. Papadias, “An ESPAR antenna for beamspace-MIMO systems using PSK modulation schemes,” to appear, International Conference on Communications (ICC 2007), Glasgow, UK, 2007.
  • [C66] P. Tragas, A. Kalis, C. Papadias, F. Ellinger, T. Ussmuller, R. Mosshammer, M. Huemer, R. Eickhoff, A. Dabek, D. Doumenis, A. Kounoudes, “RESOLUTION: Reconfigurable Systems for Mobile Local Communication and Positioning.” to appear, IST Mobile Summit 2007, Budapest, Hungary, July 1-5, 2007.
  • [C67] N. Sharma, P. R. Pinnamraju, C. Papadias, “Space-time codes with controllable ML decoding complexity for any number of antennas,” IEEE International Symposium on Information Theory (ISIT 2007), Nice, France, June 24-29, 2007.
  • [C68] A. Kalis, A. Kanatas C. Papadias, “An Alamouti transmit diversity scheme using a single active antenna element”, IEEE International Conference on Communications (ICC 2007), Glasgow, Scotland, June 24-28, 2007.
  • [C69] N. Sharma and C. Papadias, “Euclidean Distance Maximizing Rotations for Quasi-Orthogonal Space-Time Codes with MPSK symbols,” 18th Annual IEEE Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC’07), Athens, Greece, Sept 3-7, 2007.
  • [C70] P. Tragas, C. Papadias and A. Kalis, “Super-resolution signal processing techniques for accurate indoor positioning finding,” IET Seminar on Smart Antennas and Cooperative Communication, London, Oct. 22, 2007.
  • [C71] O. Alrabadi, A. Kalis, C. B. Papadias, and A. G. Kanatas, “Spatial Multiplexing by Decomposing the Far-Field of a Compact ESPAR Antenna,” 19th Annual IEEE Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC’08), Cannes, France, Sept. 14-18, 2008
  • [C72] V. Varousis, A. Kanatas, A. Kalis and C. B. Papadias, “A Limited Feedback Technique for Beamspace MIMO Systems with single RF Front-end,” 19th Annual IEEE Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC’08), Cannes, France, Sept. 14-18, 2008
  • [C73] L. K. Dritsoula and C. B. Papadias, “On the throughput potential of two-dimensional wireless multi-hop networks using directional antennas,” IEEE 69th Vehicular Technology Conference (VTC), Barcelona, Spain, April 26-29, 2009.
  • [C74] L. K. Dritsoula and C. B. Papadias, “On the throughput of linear wireless multi-hop networks using directional antennas,”  IEEE 10th International Workshop on Signal Processing Advances for Wireless Communications (SPAWC), pp. 384 - 388, Perugia, Italy, June 21-24, 2009
  • [C75] O. Alrabadi, C. B. Papadias, A. Kalis, "Decorrelating Two Signals Using Three Side-by-Side Antennas," IEEE 10th International Workshop on Signal Processing Advances in Wireless Commucations (SPAWC), pp. 320-323, Perugia, Italy, June 21-24, 2009.
  • [C76] O. Alrabadi, C. B. Papadias, A. Kalis, "A Simple Angular Transmit Diversity Scheme Using a Single RF Frontend for PSK Modulation Schemes,"  IEEE 10th Workshop on Signal Processing Advances in Wireless Commucations (SPAWC), pp. 315-39, Perugia, Italy, June 21-24, 2009.
  • [C77]O. Alrabadi, C. B. Papadias, A. Kalis and R. Prasad, "Aerial Modulation for High Order PSK Modulation Schemes," Wireless ViTAE Conference, Aalborg, Denmark, May 17-20, 2009.  
  • [C78] O. Alrabadi, N. Marchetti, A. Kalis, C. B. Papadias and R. Prasad, "A Novel Real OSTBC via a Single Radio," IEEE International Conference on Communications 2010 (ICC 2010), Cape Town, South Africa, June 2010.
  • [C79] O. N. Alrabadi, C. B. Papadias. “A Novel Alamouti Transmission Technique via a Single RF Source and a Miniaturized Antenna System,” 11th IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC 2010), Marakech, Morocco, June 2010.
  • [C80] E. P. Tsakalaki, O. N. Alrabadi, C. B. Papadias, Ramjee Prasad. “Spatial Spectrum Sensing for Cognitive Radios via Miniaturized Parasitic Antenna Systems,” 5th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CrownCom), Cannes, France, June 2010.
  • [C81] E. P. Tsakalaki, O. N. Alrabadi, C. B. Papadias, Ramjee Prasad. “Enhanced Selection Combining for Compact Single RF User Terminals in Multiuser Diversity Systems,” 21st Personal, Indoor and Mobile Radio Conference, (PIMRC 2010), Istanbul, Turkey, 26-29 September 2010.
  • [C82] E. P. Tsakalaki, O. N. Alrabadi, C. B. Papadias, R. Prasad, “An adaptive reactance-assisted antenna system for the MIMO uplink,” 17th IEEE International Conference on Electronics, Circuits, and Systems (ICECS), pp. 1228-1231, Athens, Greece, Dec. 2010.
  • [C83] T. Ratnarajah, Caijun Zhong, A. Kortun, M. Sellathurai, C. B. Papadias, “Complex Random Matrices and Multiple-Antenna Spectrum Sensing,” 2011 International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2011), Prague, Czech Republic, May 22-27, 2011.
  • [C84] E. P. Tsakalaki, O. N. Alrabadi, C. B. Papadias, R. Prasad, “Analogue orthogonal precoding using reduced-complexity transceivers,” IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, Spokane, Washington, July 2011.
  • [C85] H. Ghauch and C. B. Papadias, “Interference alignment: a one sided approach,” IEEE Global Communications Conference (Globecom 2011), Houston, Texas, Dec. 5-9, 2011.
  • [C86] H. Du, T. Ratnarajah and C. B. Papadias, “Robust joint transceiver beamforming for cognitive radio network,” in Proc. 45th Annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, USA, Nov. 6-9, 2011.
  • [C87] G. Alexandropoulos, S. Papaharalabos, K. Acuna, and C. B. Papadias, “On the performance of interference alignment over Line-of-Sight channels,” 2012 19th International Conference on Systems, Signals and Image Processing (IWSSIP), Vienna, Austria, April 11-13, 2012.
  • [C88] H. Du, T. Ratnarajah and C. B. Papadias, “Robust joint transceiver beamforming for cognitive radio network,” in Proc. 45th Annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, USA, Nov. 6-9, 2011.
  • [C89] G. Alexandropoulos, S. Papaharalabos, and C. B. Papadias, “On the performance of interference alignment over Line-of-Sight channels,” to appear, 2012 19th International Conference on Systems, Signals and Image Processing (IWSSIP), Vienna, Austria, April 11—13, 2012.
  • [C90] B. Han, A. Kalis, C. B. Papadias, R. Nielsen, R. Prasad, “Exploring the capability of ESPAR Antennas for Low Cost Communication,” 28th Wireless World Research Forum workshop (WWRF #28), Athens, Greece, April 23-25, 2012.
  • [C91] B. Han, A. Kalis, C. B. Papadias, R. H. Nielsen, R. Prasad, “Explore the Capability of ESPAR Antennas for Low Cost Communication,” the 28th Conference on Technologies and Visions for a Sustainable Wireless Internet, 2012.
  • [C92] S. Papaharalabos, G. C. Alexandropoulos, and C. B. Papadias, “A comparative study of interference alignment schemes with LTE-compliant turbo coding,” IEEE International Conference on Communications: Beyond LTE-A Workshop, Budapest, Hungary, 9 June 2013, pp. 159–163.
  • [C93] G. C. Alexandropoulos and C. B. Papadias, “A reconfigurable distributed algorithm for K-user MIMO interference networks,” IEEE International Conference on Communications, Budapest, Hungary, 9–13 June 2013, pp. 1656–1660.
  • [C94] H. Du, T. Ratnarajah, M. Sellathurai, and C. B. Papadias, “Joint Frobenius norm and reweighted nuclear norm minimization for interference alignment,” IEEE International Conference on Communications (ICC’13), Budapest, Hungary, June 9-13, 2013.
  • [C95] V. Barousis, E. Roumpakias, and C. B. Papadias, “A parasitic antenna array for directive multi-hop sensor communication,” The 14th IEEE International Workshop on Signal Processing Processing Advances for Wireless Communications (SPAWC 2013), Darmstadt, Germany, June 16-19, 2013.
  • [C96] G. Shah and C. B. Papadias., “Separation of cardiorespiratory sounds using time-frequency masking and sparsity,” 18th Int. Conf. on Digital Signal Processing (DSP), Santorini, Greece, July 2013.
  • [C97] B. Han, R. H. Nielsen, C. B. Papadias, and R. Prasad, “Radio Frequency Energy Harvesting for Long Liefetime Wireless Sensor Networks,” International Conference on Wireless Communications, Vehicular Technology, Information Theory and Aerospace Electronic Systems Technology (Wireless ViTAE), 2013.
  • [C98] B. Han, R. H. Nielsen, C. B. Papadias, and R. Prasad, “Directional Transmission by 3-D Beam-forming using Smart Antenna Arrays,” International Symposium on Wireless Personal Multimedia Communications (WPMC), pp. 26-28, 2013.
  • [C99] B. Han, A. Kalis, C. B. Papadias, P. Tragas, R. H. Nielsen, R. Prasad, “Localization Techniques in Structural Damage Detection,” the IABSE Conference on Assessment Upgrading and Refurbishment of Infrastructures, 2013.
  • [C100] B. Han, A. Kalis, C. B. Papadias, R. Soman, M. Kyriakides, T. Onoufriou, R. H. Nielsen, and R. Prasad, “Energy Harvesting for Sensors in Infrastructure Monitoring and Maintenance,” the IABSE Conference on Assessment Upgrading and Refurbishment of Infrastructures, 2013.
  • [C101] B. Han, A. Kalis, C. B. Papadias and R. Prasad, “Energy Efficient MIMO Transmission with High Order Modulations for Wireless Sensor Network,” 21st European Signal Processing Conference (EUSIPCO 2013), Marrakech, Morocco, Sept. 13-16, 2013.
  • [C102] G. Shah and C. B. Papadias, “Blind recovery of cardiac and respiratory sounds using non-negative matrix factorization & time-frequency masking,”13th IEEE International Conference on BioInformatics and BioEngineering, BIBE 2013, Chania, Greece, November 10-13, 2013.
  • [C103] G. C. Alexandropoulos, S. Papaharalabos and C. B. Papadias, “On the performance of transceiver techniques for the K-User MIMO IFC with LTE-A turbo coding,” in Proc. IEEE Wireless Communications and Networking Conference (WCNC): WWRF Workshop, Istanbul, Turkey, April 6, 2014.
  • [C104] N. Taramas, G. C. Alexandropoulos, and C. B. Papadias, “Opportunistic beamforming for secondary users in licensed shared access networks,” in Proc. IEEE International Symposium on Communications, Control and Signal Processing, Athens, Greece, May 21–23, 2014.

Book chapters

  • [B1] A. Paulraj and C. B. Papadias, “Array Processing for Mobile Communications,” in Handbook on Signal Processing, CRC Press, 1997.
  • [B2] A. Paulraj, C. B. Papadias, V. U. Reddy and A. van der Veen, “Space-Time Blind Signal Processing for Wireless Communications,” in Wireless Communications: a Signal Processing Perspective, G.Wornell and H. V. Poor, Eds., Prentice Hall, 1998.
  • [B3] A. Paulraj, D. Gesbert, and C. B. Papadias, “Antenna Arrays in Mobile Communications,” in Encyclopedia of Electrical and Electronics Engineering, John G. Webster, Editor, 1999.
  • [B4] C. Papadias, “Blind Separation of Independent Sources Based on Multiuser Kurtosis Optimization Criteria,” chapter 4 in Unsupervised Adaptive Filtering, vol. II, Simon Haykin, Editor, John Wiley & Sons, Inc., publisher, 1999.
  • [B5] C. Papadias, “Multiple Antenna Transceivers for Wireless Communications: a Capacity Perspective,” Wiley Encyclopedia of Telecommunications, John G. Proakis, Editor, John Wiley & Sons, Hoboken, NJ, 2003.

BOOKS

  • Editor, “Space-Time Wireless Systems: From Array Processing to MIMO Communications” (co-edited with H. Bolcksei, D. Gesbert, and A. van der Veen), by Cambridge Press, June 2006, ISBN 052185105X.
  • Author, "MIMO Communication for Cellular Networks," (co-authored with. H. C. Huang and S. Venkatesan), by Springer, ISBN-10: 0387775218, ISBN-13: 978-0387775210, Nov. 2011 (see http://www.springer.com/engineering/signals/book/978-0-387-77521-0).
  • Editor, "Parasitic Antenna Arrays for Wireless MIMO Systems," (co-edited with A. Kalis and A. Kanatas), by Springer, ISBN: 978-1-4614-7998-7, 2013.

CITATIONS / RECOGNITION

  • More than 5000 citations of his work by other researchers (e.g. see Google Scholar / Publish or Perish).
  • His paper with A. Paulraj "Space-Time Processing for Wireless Communications", [J2] was recognized in 2006 as "the most highly cited paper in wireless networks" over the last decade by Essential Science Indicators(ESI).
  • The paper "Is the PHY Layer Dead?" [J42]  that he co-authored for the IEEE Communications Magazine made it in the top 3 most downloaded documents of IEEE in April 2011.

PAPER AWARDS

Was awarded the IEEE Signal Processing Society’s Young Author Best Paper Award, (year: 2003, topic “Signal Processing for Communications”) for paper [J8].  Paper [J36] was nominated for the Marconi paper award. The paper The paper [C102], which he co-authored with G. Shah, won a Best Student Paper Award at the 13th IEEE International Conference on BioInformatics and BioEngineering, (Chania, Crete, Nov. 10-13, 2013).

INVITED LECTURES / CHAIRED SESSIONS / PANELS

Invited lectures

  • [1] “Blind joint equalization of multiple synchronous mobile users using oversampling and/or multiple antennas,” session WA1: Signal Processing and Communications, 28th Annual Asilomar Conference on Signals, Systems, and Computers, Nov. 2, 1994.
  • [2] “Some recent methods and results for the blind equalization of linear communication channels, Information Systems Laboratory, Stanford University, Nov. 4, 1994.
  • [3] “Multichannel blind identification and equalization,” I3S-CNRS, Sophia Antipolis, France, Feb. 23, 1995.
  • [4] “Some recent results on the blind linear equalization of polyphase channels,” University of California at Berkeley, Department of Electrical Engineering and Computer Science, Jan. 24, 1997.
  • [5] “Space-time signal processing for wireless communications: a survey,” First Signal Processing Workshop on Signal Processing Advances in Wireless Communications (SPAWC’97), Paris, France, April 16, 1997.
  • [6] “Blind separation of independent co-channel signals,” 13th Internationl Conference on Digital Signal Processing, Santorini, Greece, July 4, 1997.
  • [7] “On the blind separability of multiple user signals in the presence of delay spread,” 31st Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov. 2-5, 1997.
  • [8] “Second-order-based blind equalization/ separation of i.i.d. signals,” International Conference on Telecommunications (ICT-98), Chalkidiki, Greece, June 22-25,1998.
  • [9] “Adaptive multi-user detection for fading CDMA channels,” 32nd Asilomar ’98 Conference on Signals, Systems, and Computers, Pacific Grove, CA, USA, Nov. 1-4, 1998.
  • [10] “Some recent research results on space-time signal processing for CDMA systems,”
    invited talk at University of California at Berkeley, seminar series on communications, Oct. 29, 1998.
  • [11] “Some recent research results on space-time signal processing for CDMA systems,”
    invited talk at Stanford University, Oct. 30, 1998.
  • [12] “Performance analysis of finite-length DFE receivers based on a polyphase representation,” 32nd Asilomar ’98 Conference on Signals, Systems, and Computers,
    Pacific Grove, CA, USA, Nov. 1-4, 1998.
  • [13] “Kurtosis-based optimization criteria for blind source separation with applications to multi-user detection for CDMA systems,” invited talk at Princeton University, ISS group seminar, Dec. 10, 1998.
  • [14] “Kurtosis-based optimization criteria for blind source separation with applications to multi-user detection for CDMA systems,” invited talk at Eurecom Institute, Sophia Antipolis, France, Dec. 21, 1998, weekly technical seminar.
  • [15] “Recent advances in the blind deconvolution of linear channels,” invited talk given at the Mathematics for Communications Research Department of Bell Laboratories, Murray Hill, NJ, Jan. 26, 1999.
  • [16] “Space-time spreading for CDMA systems,” invited talk at the 6th workshop on Smart Antennas in Wireless Mobile Communications, Stanford University, Stanford, CA, July 22-23, 1999.
  • [17] “Space-Time Spreading: a transmit diversity scheme for cdma-2000, ” invited talk at the Wireless Circuits and Systems Research Department of Bell Laboratories, Swindon, UK, Oct. 19, 1999.
  • [18] “BLAST receiver processing using very few (if any) training symbols,” invited talk at 1st Bell Labs BLAST Workshop, Murray Hill, Feb. 2-3, 2000.
  • [19] “Blind signal separation in narrow band BLAST systems,” invited talk at CISS-2000 Conference, Princeton, NJ, March 15-17, 2000.
  • [20] “Channel estimation for BLAST: fundamental limitations,” invited talk at 1st BLAST Coffee Hour, Murray Hill, March 25, 2000.
  • [21] “Smart antennas: a technology that can help boost the capacity of wireless communication systems,” invited talk at the Dept. of Electrical and Computer Engineering, National Technical University of Athens, Athens, Greece, April 5, 2000.
  • [22] “Open-Loop Transmit Diversity Technique for Systems Employing Four Transmitter Antennas,” invited talk in ICASSP-2001 conference, special session on space-time coding, Salt Lake city, May 7-11, 2001.
  • [23] “An overview of some recent research studies in the area of multiple antenna communication systems”, invited talk given at Stanford University, January 10, 2002.
  • [24] “An overview of some recent research studies in the area of multiple antenna communication systems”, invited talk given at Drexel University, March 14, 2003.
  • [25] “An overview of some recent research studies in the area of multiple antenna wireless communication systems,” invited seminar, Athens Information Technology, Athens, Greece, Sept. 1, 2003.
  • [26] “An overview of some recent research activities in the area of multiple antennas wireless communication systems,” invited seminar given at the Dept. of Informatics and Telecommunications, University of Athens, Sept. 5, 2003.
  • [27] “FITNESS: Fourth-generation Intelligent Transparent Networks Enhanced through Space-time Systems (project summary),” invited presentation given at the “Globecom at Stanford symposium, organized by the Smart Antenna Research Group at Stanford University, Stanford, CA, Dec. 5, 2003.
  • [28] “Some Recent EU-funded MIMO Research Activities,” invited talk at the 2004 Workshop on Smart Antennas in Wireless Communications, Stanford University, Stanford, CA, July 29-30, 2004.
  • [29] “Some recent advances in the area of space-time wireless communications,” invited seminar, Athens Information Technology, Athens, Greece, Sept. 5, 2004.
  • [30] “An overview of some recent research activities in the area of space-time wireless systems and their application to wireless networks,” invited seminar given at CyLab, Carnegie Mellon University, Nov. 29, 2005.
     
    Several more invited lectures since 2005, such as at the University of Athens and Supélec among others.

Chaired sessions

  • [1] 28th Annual Asilomar Conference on Signals, Systems, and Computers, Nov. 2, 1994. Chaired the poster session WA8a (equalization).
  • [2] Third Workshop on Smart Antennas in Wireless Mobile Communications, Stanford University, July 26, 1996. Chaired the first oral presentation session.
  • [3] 13th International Conference on Digital Signal Processing, Santorini, Greece, July 2-4, 1997. Organized and chaired the special session “Signal Processing Techniques for Wireless Communications”.
  • [4] Sixth Workshop on Smart Antennas in Wireless Mobile Communications, Stanford University, July 22, 1999. Chaired session IV.
  • [5] 2000 Conference on Information Sciences and Systems (CISS-2000), March 15-17, 2000. Co-chaired and organized the session “Signal Processing for Wireless Communications I”.
  • [6] 2000 IEEE International Symposium on Information Theory (ISIT ’2000),” Sorrento, Italy, June 25-30, 2000. Chaired the session “Signal Processing I”.
  • [7] 2001 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP-2001), chaired the session “Constant Modulus Algorithms.”
  • [8] 2003 International Conference on Communications (ICC 2003), chaired the session CT5 “Space-Time Coding and Unknown Channels.”
  • [9] 2003 Information Society Technologies (IST) Mobile Communications Summit, chaired session on MIMO techniques.
  • [10] 2003 Globecom Conference (Globecom ’03), chaired session WC-31, “Multiple Carrier & Antenna Systems II.”
  • [11] 2004 Globecom Conference (Globecom ’04), chaired session on interference cancellation.
  • [12] 2005 ICASSP Conference (ICASSP ’05), chaired session on MIMO channel estimation.
  • [13] 12th European Wireless Conference (EW2006), Athens, Greece, April 2-5, 2006: chaired session A5 on Smart Antennas, MIMO and Beamforming.
  • [14] 15 th IST Mobile Summit, Mykonos, Greece, June 4-8, 2006: chaired session "MIMO Systems I".
  • [15] 4th IFIP Conference on Artificial Intelligence Applications & Innovations (AIAI 2007), Sept 19-21, 2007, chaired session "Applications of AI in Communications and Networks."
  • [16] Co-organized and co-chaired the special session "Multiuser & Multi-cell
    MIMO Techniques" at the 18th Annual Symposium on Personal Indoor and Mobile Radio Communications (PIRMC 2007) was recently held in Athens, Greece (Athens Hilton, September, 3-7, 2007).
  • [17] Chaired the session "MIMO I" at the 18th Annual Symposium on Personal Indoor and Mobile Radio Communications (PIRMC 2007) held in Athens,Greece, Sept. 3-7, 2007.
  • [18] Co-organized the “Show and Tell” session of ICASSP 2008, which was held in Las Vegas, April 2, 2008.
  • [19] Chaired the specail session on Cognitive Radio Techniques (SS3) at PIMRC 2010, Sept. 27, 2010.

PANELS

  • [1] 2005 ICASSP Conference, Philadelphia, USA, March 18-23, 2005: participated in Panel entitled "when will the smart antennas be ready for the market"
  • [2] 1st CROWNCOM Conference (CROWNCOM 2006), Mykonos, Greece, June 8-10, 2006: participated in Panel II: "Cognitive Radio Dynamic Spectrum Access: Enablers & Future Architectures".
  • [3] International Symposium on Wireless Pervasive Computing, Santorini, Greece, May 7-9, 2008: organizer and participant in panel "Challenges and Solutions for future Wireless Pervasive Networking"
  • [4] IEEE VTC 2009, Panelist in panel entitled "Is the Physical Layer Dead?" Barcelona, April 29, 2009.

CONFERENCE / SYMPOSIUM / WORKSHOP ORGANIZATION

  • Chairman, 10th WWRF meeting, New York, NY, Oct. 27-28, 2003.
  • He is on the Editorial Board and has contributed to the organization of several other conferences and workshops (such as the Crowncom conference on cognitive radio, the PIMRC 2007 conference, the IEEE ICASSP 2007 conference (serving as Industrial Co-Chair), the IEEE SPAWC Workshops, etc).
  • Organizer & Chairman, AIT’s 1st Research Forum, Nov. 25-26, 2010.
  • Co-Organizer & Co-Chairman, AIT’s 1st International Workshop on Compact Antennas COMPASS 2011, Athens, Greece, March 1, 2011.

STANDARDS CONTRIBUTIONS

He was a co-inventor of the “Space-Time Spreading (STS)” transmit diversity scheme that was adopted by the cdma-2000 3rd generation cellular standard as an optional transmit diversity mode for voice communication (contribution 3GPP2-C30-19990817-014, accepted Sept. 1999).

PATENTS

  • [P1] H. Huang, L. Mailaender, C. Papadias, “MMSE Detectors for CDMA Systems,” U.S. patent # 6,301,293, issued Oct. 9, 2001.
  • [P2] B. Hochwald, T. Marzetta, C. Papadias, “Space-Time Spreading Method of CDMA Wireless Communication”, U.S. Patent # 6,452,916, issued Sept. 17, 2002.
  • [P3] C. Papadias, “Method for Blind Separation of Independent Source Signals,” U.S. Patent # 6,654,719, issued Nov. 25, 2003.
  • [P4] C. Papadias, M. Tsangaris, G. Vannucci, “A technique and an apparatus to detect the presence of mobile terminals,” U.S. Patent Number # 6,907,252, issued June 14, 2005.
  • [P5] X. Li, H. Viswanathan, C. Papadias, “Orthogonal Frequency Division Multiplexing Transmit Diversity System For Frequency-Selective Fading Channels,” U.S. Patent Number # 7,020,072, issued March 28, 2006
  • [P6] J. T. Chen, C. Papadias, J. Foschini, “Code Assignment in a CDMA Wireless System,” U.S. Patent Number # 7,035,238, issued April 25, 2006.
  • [P7] C. Papadias and G. J. Foschini, “Open-loop diversity technique for systems employing four transmitter antennas,” U.S. Patent Number # 7,050,510, issued May 23, 2006.
  • [P8] C. Papadias and G. J. Foschini, “Wireless communications system employing multi-element antenna having a space-time architecture,” U. S. Patent Number #7,116,722, issued Oct. 3, 2006.
  • [P9] C. Papadias and N. Sharma, “Improved quasi-orthogonal space-time codes,” U. S. Patent Number #7,184,488, issued Feb. 27, 2007.
  • [P10] D. Avidor, J. Ling and C. B. Papadias, “Opportunistic beamforming and scheduling of users in a communication system,” U. S. Patent Number #7,239,879, issued July 3, 2007.
  • [P11] A. Kuzminskiy and C. B. Papadias, “Receiver of digital data bursts comprising an antenna array, and a method of receiving,” U. S. Patent Number #7,391,830, issued June 24, 2008.
  • [P12] D. Avidor, J. Ling and C. B. Papadias, “Opportunistic beamforming and scheduling of users in a communication system,” U. S. Patent Number #7,760,685, issued July 20, 2010.

 

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