AIT Community / Faculty / Research Scientists / Dr. Konstantinos Kanonakis

CONTACT INFORMATION Athens Information Technology 19.5 Km Markopoulo Avenue, 19002 Peania, Attiki, Greece P.O. Box 68 Phone: +302106682793 Fax: +302106682729 E-mail: kkan@ait.edu.gr

SUMMARY

Dr. Konstantinos Kanonakis was born in Heraklion Crete, Greece, in 1982. He was awarded his PhD degree in the field of optical networks from the School of Electrical and Computer Engineering of the National Technical University of Athens (NTUA), Greece, in 2008 and the Dipl.-Ing. Degree from the same university in 2004. In March 2008 he joined the High-Speed Networks and Optical Communications group of AIT. His main research interests are in the area of traffic engineering, design and analysis of architectures and control protocols for optical core and broadband access networks as well as their implementation in hardware. He has co-authored more than 40 papers that appeared in international peer-reviewed journals and conferences and serves as a reviewer for major journals and conferences. He has participated in European Union projects (IST-MUSE I-II, IST-NOBEL I-II, ICT-SARDANA, ICT-ACCORDANCE) and national ones (NGEAN).
Dr. Kanonakis is a member of the IEEE, the IEEE Communications Society and the Technical Chamber of Greece.

EDUCATION

2004 – 2007:
Ph.D. (Excellent), School of Electrical and Computer Engineering of the National Technical University of Athens, Greece. Thesis title: “Architectures and protocols of optical networks with emphasis on optical burst-switched WDM networks”, under the supervision of Prof. I. Pountourakis.

1999 – 2004:
Diploma from the School of Electrical and Computer Engineering (5-year scheme) of the National Technical University of Athens with a GPA of 8.42/10 (ranking in the upper 10% of the graduates). Diploma thesis titled “Aggregation networks with QoS support – A study using the OPNET simulator”, supervised by Prof. E. Protonotarios.

FOREIGN LANGUAGES

• Excellent knowledge of English (Cambridge Proficiency, Michigan Proficiency).
• Very good knowledge of German (Zentrale Mittelstufenprüfung, Goethe Institut).

SOFTWARE SKILLS

• Programming Languages: C/C++, Java, VHDL, Pascal, HTML.
• Commercial Software Platforms: OPNET Modeler, Modelsim, Mathematica, Matlab.
• Operating Systems: MS Windows, Linux, UNIX.

RESEARCH/PROFESSIONAL EXPERIENCE

March 2008 – April 2009, January 2010 – Present: Athens Information Technology, Athens, Greece

Position: Senior Research Scientist, member of the High-Speed Networks and Optical Communications Group.

He is the project manager on behalf of AIT for the EU FP7 STREP ACCORDANCE (http://www.ict-accordance.eu/). Previously he was the technical coordinator and main co-author of the successful proposal for the aforementioned project. The total project budget for ACCORDANCE (A converged copper-optical-radio OFDMA-based access network with high capacity and flexibility) is 3.5M € and it involves 10 European industrial and academic partners. ACCORDANCE introduces a novel ultra high capacity (even reaching the 100Gbps regime) extended reach optical access network architecture based on OFDMA (Orthogonal Frequency Division Multiple Access) technology/protocols, implemented through the proper mix of state-of-the-art photonics and electronics. Such an architecture is not only intended to offer improved performance compared to evolving TDMA-PON solutions but also inherently provide the opportunity for convergence between optical, radio and copper-based access. Dr. Kanonakis also participates in the FP7 STREP project ICT-SARDANA, working on Architectural and MAC layer issues of next generation WDM-PON networks and is involved in the FP7 NoE projects BONE and EUROFOS.

May 2009 – March 2010:

Served his mandatory military service in the Hellenic Army.

January 2008 – March 2008: Forthnet S.A., Greece

He worked for the demonstration application of the national project NGEAN. His involvement was in the programming of the embedded processors of a FPGA-based router.

September 2004 – January 2008: Telecommunication Systems Laboratory, National Technical University of Athens, Greece

In the framework of the FP6 IP projects IST-MUSE I-II and IST-NOBEL I-II he was involved in the design, analysis and simulation of optical and broadband access networks.

In the framework of IST-MUSE I-II he performed extensive studies and simulations on broadband access networks. Part of his work was the investigation of scheduling mechanisms for the support of QoS at the access multiplexer. In addition, he was involved in the design of a generic scheduling component which can be configured to support various numbers of flows and used for building hierarchical schedulers in hardware using VHDL. The schedulers reside at the access multiplexer nodes, which aggregate traffic from access networks and forward it to the aggregation/metro networks over 10Gbps links. In October 2006 he cooperated with Alcatel-Lucent researchers for the successful integration of an instance of the design on FPGA at the company’s labs in Antwerp. Finally, he investigated ways of providing QoS at the access network to services lacking explicit signaling.

The work he has done for the projects IST-NOBEL I-II consists of studying novel optical core network architectures and protocols. More specifically, he was involved in the design of two different architectures and the respective control protocols for optical burst-switched networks. The first is based on clustering the system nodes, with different control protocols being used inside and outside the clusters, while the second makes use of slotted pipelined two-way reservations, achieving efficient and loss-less operation. The performance of both schemes has been evaluated using computer simulations, and it has been shown that they both outperform typical OBS approaches. Moreover, he developed analytical models for the evaluation of the aforementioned protocols, as well as for the performance of burst assembly mechanisms.

Summer 2003: University of Ljubljana, Slovenia:

As an exchange student he was involved in the research activities of the computer vision laboratory of the University of Ljubljana, Slovenia.

TEACHING EXPERIENCE

September 2004 – February 2008: Automation Engineering Department, Technological Institute of Piraeus, Greece:
He worked as a teaching assistant at the Automation Engineering Department of the Technological Institute of Piraeus, teaching the “Internet Protocols” course.

SERVICE TO THE SCIENTIFIC COMMUNITY

Dr. Kanonakis has co-authored more than 40 papers that appeared in international journals and conferences. He serves/has served as a reviewer for major journals (IEEE Communications Magazine, IEEE/OSA Journal of Lightwave Technology, IEEE Journal of Selected Areas in Communications, Elsevier Computer Networks, IET Communications) and conferences (IEEE GLOBECOM, ECOC, ONDM). He has also participated in the organization of the GridNets 2009 and BroadNets conferences as local chair.

PUBLICATIONS

International peer-reviewed journals

• K. Kanonakis, I. Tomkos, H. G. Krimmel, F. Schaich, C. Lange, E. Weis,  J. Leuthold, M. Winter, S. Romero,  P. Kourtessis,  M. Milosavljevic, I. Cano and J. Prat, "An OFDMA-Based Optical Access Network Architecture Exhibiting Ultra-High Capacity and Wireline-Wireless Convergence", accepted for publication in the IEEE Communications Magazine, 2012.
• Κ. Kanonakis, E. Giacoumidis and Ι. Tomkos, “Physical Layer Aware MAC Schemes for Dynamic Subcarrier Assignment in OFDMA-PON Networks”, accepted for publication in the IEEE/OSA Journal of Lightwave Technology, 2012. Download PDF
• Κ. Kanonakis, Ι. Tomkos, “Improving the Efficiency of Online Upstream Scheduling and Wavelength Assignment in Hybrid WDM/TDMA EPON Networks”, IEEE Journal on Selected Areas in Communications, Special Issue on Next-Generation Broadband Optical Access Network Technologies, Vol. 28, Iss.6, pp. 838–848, August 2010. Download PDF
• Κ. Kanonakis, Ι. Tomkos, “Offset-based Scheduling with Flexible Intervals for Evolving GPON Networks”, IEEE/OSA Journal of Lightwave Technology, Vol. 27, Iss. 15, pp. 3259-3268, August 2009. Download PDF 
• A. Stavdas, J. D. Angelopoulos, A. Lord, Th. Orphanoudakis, H. C. Leligou, K. Kanonakis and A. Drakos, “Dynamic CANON: a scalable multidomain core network”, IEEE Communications Magazine, Vol. 46, No. 6, pp. 138-144, June 2008.
• A. Stavdas, K. Kanonakis, G. Koukouvakis, H. C. Leligou, Th. Orphanoudakis, J. D. Angelopoulos,  “Clustering all-optical core nodes allows distributed aggregation of data bursts under closed-loop control for improved efficiency and reduced loss”, European Transactions on Telecommunications, Wiley Interscience, Vol. 19, Iss. 1, pp. 33-38, January/February 2008.
• J.D. Angelopoulos, C. Dessauvage, H.-C. Leligou, K. Kanonakis,C. Matrakidis, E. Six, “Dynamic address resolution for enhanced configurability in packet-based TDMA GPONs”, Elsevier Information Sciences, Vol.177, Iss.16, Pages: 3327- 3340, August 2007.
• T. Orphanoudakis, H.-C. Leligou, E. Kosmatos, J. D. Angelopoulos, K. Kanonakis, G. Prezerakos, and I. Venieris, “Efficient resource allocation with service guarantees in passive optical networks”, OSA Journal of Optical Networking, Vol.6, No.6, pp.884-896, June 2007. 
• Angelopoulos, J. D.; Kanonakis, K.; Koukouvakis, G.; Leligou, H. C.; Matrakidis, C.; Orphanoudakis, T. G.; Stavdas, A., “An Optical Network Architecture With Distributed Switching Inside Node Clusters Features Improved Loss, Efficiency, and Cost”, IEEE/OSA Journal of Lightwave Technology, Vol.25, Iss.5, Pages:1138-1146, May 2007.
• Angelopoulos, J.D.; Kanonakis, K.; Leligou, H.C.; Linardakis, C.; Pountourakis, I.E.; Stavdas, A., "Slotted Optical Switching With Pipelined Two-Way Reservations", IEEE/OSA Journal of Lightwave Technology, Vol.24, Iss.10, Pages: 3616- 3624, October 2006.
• H. C. Leligou, Ch. Linardakis, K. Kanonakis, J. D. Angelopoulos and Th. Orphanoudakis, “Efficient medium arbitration of FSAN-compliant GPONs”, Wiley ed. International Journal of Communication Systems, Vol. 19, No:5, pp.: 603-617, June 2006.
• Helen-C. Leligou, Konstantinos Kanonakis, John Angelopoulos,  Ioannis Pountourakis, Theofanis Orphanoudakis, “Efficient burst aggregation for QoS-aware slotted OBS systems”, European Transactions on Telecommunications, Wiley Interscience, Vol.17, Issue 1, pp.93-98, January/February 2006. 
• Alexandros Stavdas, Helen-C. Leligou, Konstantinos Kanonakis, Charalambos Linardakis, John D. Angelopoulos, “A Novel Scheme for Performing Statistical Multiplexing in the Optical Layer”, OSA Journal of Optical Networking, Vol.4, No.5, pp.237-247, May 2005.
• J. D. Angelopoulos, K. Kanonakis, H.C. Leligou, Th. Orphanoudakis, G.Kornaros, “Multiplexing QoS-differentiated traffic in an Ethernet-based access network”, Mediterranean Journal of Computers and Networks, Vol. 4, No. 2, pp. 54-61, April 2008.

Invited talks

• K. Kanonakis, I. Tomkos, “An overview of MAC issues in converged OFDMA-PON networks”, 13th International Conference on Transparent Optical Networks (ICTON ’11), June 26 - 30, 2011, Stockholm, Sweden.
• K. Kanonakis, I. Tomkos, T. Pfeiffer, J. Prat, P. Kourtessis, “ACCORDANCE: A novel OFDMA-PON paradigm for ultra-high capacity converged wireline-wireless access networks”, 12th International Conference on Transparent Optical Networks, 2010 (ICTON ’10), June 27 - July 1 2010, Munich, Germany . Download PDF 
• J. Prat, J. A. Lázaro, K. Kanonakis, I. Tomkos, “New FTTH Architectures for NG-PON-2”, OSA Access Networks and In-house Communications (ANIC) Topical Meeting, June 21-24 2010, Karlsruhe, Germany.
• K. Kanonakis, I. Tomkos, “Efficient scheduling disciplines for next generation QoS-aware GPON networks”, 10th Anniversary International Conference on Transparent Optical Networks, 2008 (ICTON ‘08), vol. 4, pp. 135-138, 22-26 June 2008, Athens, Greece.
• Angelopoulos, J. D.; Kanonakis, K.; Leligou, H. C.; Orphanoudakis, T.; Politi, T., “Analytical Evaluation and Implementation of a Novel Slotted Optical Switching Scheme with Two Way Reservations”, 9th International Conference on Transparent Optical Networks, 2007. ICTON '07, vol.3, no., pp.205-208, 1-5 July 2007, Rome, Italy.
• J. D. Angelopoulos, H.C. Leligou, K. Kanonakis, Ch. Linardakis, I. Pountourakis, “A reservation-based mechanism prevents losses in slotted Optical Burst Switching”, Conference on Networks and Optical Communications, July 5-7, 2005, London, United Kingdom.

International peer-reviewed conferences

• K. Kanonakis, N. Cvijetic, I. Tomkos, T. Wang, “A Novel Energy and Delay Efficient OFDMA “Meta-MAC” Scheme for Heterogeneous PON Coexistence”, to be presented at the IEEE OptoElectronics and Communications Conference (OECC’12), July 2-6 2012, Busan, South Korea.
• P. Vetter, L. Lefevre, L. Gasca, K. Kanonakis, L. Kazovsky, B. Lannoo, K. L. Lee, C. Monney, X. Qiu, F. Saliou, A. Wonfor, "Research Roadmap for Green Wireline Access", to appear at the IEEE International Conference on Communications 2012 (ICC'12), Workshop on Green Communications and Networking, June 10-15 2012, Ottawa, Canada.
• K. Kanonakis, J. Zhang, N. Cvijetic, I. Tomkos, T. Wang, “1G/10G-EPON Compliant Scheme Combining ONU Energy Efficiency with QoS Performance”, Optical Fiber Communication Conference and Exposition 2012 (OFC'12), paper JTh2A.52, March 6-8 2012, Los Angeles, CA.
• K. Kanonakis, I. Tomkos, “MAC Framework and Algorithms for Dynamic Subcarrier Assignment in OFDMA-PONs”, IEEE Symposium on Computers and Communications (ISCC’11), June 28 – July 2011, Corfu, Greece.
• K. Kanonakis, E. Giacoumidis, I. Tomkos, “Effects of Adaptive Subcarrier Modulation on MAC Operation in OFDMA-PONs”, Future Network & Mobile Summit 2011, 15-17 June 2011, Warsaw, Poland.
• W. Lim, A. Gliwan, P. Kourtessis, K. Kanonakis, I. Tomkos, and J. M. Senior, “MAC Protocol Design for the Support of DBA in OFDMA-PON Networks”,  Future Network & Mobile Summit 2011, 15-17 June 2011, Warsaw, Poland.
• K. Kanonakis, I. Tomkos, “Detaining Online Upstream Scheduling in WDM/TDMA EPONs”, 36th European Conference and Exhibition on Optical Communication, ECOC 2010, September 19-23 2010, Torino, Italy.
• K. Kanonakis, I. Tomkos, “Scheduling and Wavelength Assignment Issues in Metro-Scale Hybrid WDM/TDMA EPONs”, Future Network & Mobile Summit 2010, 16 - 18 June 2010, Florence, Italy.
• K. Kanonakis, I. Tomkos, “Online Upstream Scheduling and Wavelength Assignment Algorithms for WDM-EPON Networks”, 35th European Conference and Exhibition on Optical Communication, ECOC 2009, September 20-24 2009, Vienna, Austria.
• J. Prat, J. Lazaro, P. Chanclou, R. Soila, P. Velanas, A. Teixeira, G. Tosi Beleffi, I. Tomkos, K. Kanonakis, “Passive Optical Network for Long-Reach Scalable and Resilient Access”, 10th International Conference on Telecommunications, ConTEL 2009, June 8-10, 2009, Zagreb, Croatia.
• K. Kanonakis, I. Tomkos, “A Novel Dynamic Bandwidth Assignment Framework for GPON Networks”, Conference on Networks and Optical Communications, June 10-12, 2009, Valladolid, Spain.
• J. Prat, J. Lazaro, P. Chanclou, R. Soila, P. Velanas, A. Teixeira, G. Tosi Beleffi, I. Tomkos, K. Kanonakis, “A long-reach resilient passive optical network for scalable access”, ICT Mobile Summit, June 10-12, 2009, Santander, Spain.
• K. Kanonakis, H-C. Leligou, John Angelopoulos, Edith Gilon, Jan Van Den Abeele, “Towards an autonomic access system providing QoS to services lacking explicit signaling”, Conference on Networks and Optical Communications, June 19-21, 2007, Stockholm, Sweden.
• Helen-C. Leligou, Theofanis Orphanoudakis, Konstantinos Kanonakis, George Prezerakos, John D. Angelopoulos, “Providing Delay Bounds for Real-time Traffic over EPONs”, 9th WSEAS International Conference on Automatic Control, Modeling & Simulation (ACMOS ‘07), Istanbul, Turkey, 27-29 May 2007.
• J. D. Angelopoulos, K. Kanonakis, H.C. Leligou, C. Linardakis, “Probe-and-go: a novel approach to OBS”, Photonics in Switching 2006, Crete, Greece, October 2006.
• A. Stavdas, K. Kanonakis, G. Koukouvakis, H.C. Leligou, Th. Orphanoudakis, J.D. Angelopoulos, “Clustering core nodes allows efficient all-optical payload switching”, Photonics in Switching 2006, Crete, Greece, October 2006.
• G. Rajan, A. Elizondo, H.C. Leligou, K. Kanonakis, J. D. Angelopoulos, “Strategies for expediting inter-provider QoS support in access networks”, Conference on Networks and Optical Communications, July 10-13, 2006, Berlin, Germany.
• J. D. Angelopoulos, K. Kanonakis, Ch. Linardakis, H.C. Leligou, “Supporting Ethernet with QoS in a Local Access Multiplexer”, Conference on Networks and Optical Communications, July 5-7, 2005, London, United Kingdom.
• J. D. Angelopoulos, H. C. Leligou, K. Kanonakis, H. Linardakis, I. Pountourakis, A. Stavdas, “Slot reservations for lossless Optical Burst Switching", ELMAR2005 conference, Zadar, Croatia, 8-10 June 2005.
• H.-C. Leligou, K. Kanonakis, Th. Orphanoudakis, J.D. Angelopoulos, “Traffic aggregation for slotted OBS systems”, ELMAR2005 conference, Zadar, Croatia, 8-10 June 2005.
• K. Kanonakis, H. C. Leligou, J. Angelopoulos, Th. Orfanoudakis, M. Katsigiannis, “Dynamic QoS provisioning for Ethernet-based networks”, IeCCS 07, electronic conference.

SCIENTIFIC INTERESTS

• MAC protocols/algorithms for PON networks (TDMA-PON, WDM-PON, OFDMA-PON).
• Architectural issues of next generation optical access networks.
• Control mechanisms for optical core networks.
• Bandwidth allocation and QoS issues in broadband access networks.
• Network Simulation.
• FPGA design/programming for networking purposes.
• Modeling and analysis of computer networks.

PROFESSIONAL MEMBERSHIPS 

• Member of the IEEE.
• Member of the IEEE Communications Society.
• Member of the Technical Chamber of Greece.