Chair in Telecommunications
The Director of Lightwave Devices Laboratory
National Institute of Information and Communication technology (NICT)
The 2014 President of The IEEE Antennas and Propagation Society
Department of Electrical and Computer Eng., SyracuseUniversity
by Lajos Hanzo, School of ECS, Univ. of Southampton, S017 1BJ, UK
Abstract: The spectacular success of MIMO systems may be attributed to the fact that the MIMO capacity increases linearly with the number of transmit antennas, provided that the number of receive antennas is equal to the number of transmit antennas. With the further proviso that the total transmit power is increased proportionately to the number of transmit antennas, a linear - rather than logarithmic - capacity increase is achieved upon increasing the transmit power [1, 2]
“But Dr Shannon - how can we approach this vast capacity potential in practice?”
The list of practical limitations is daunting...
• How can we physically accommodate a large number of antennas on a compact mobile device, especially multiple RF chains?
• How do we circumvent or harness the signal correlation of the closely-spaced antennas?
• How do we estimate the huge number of MIMO links?
• What is the pilot-overhead and complexity-overhead of estimating numerous MIMO-links? Is pilot-symbol assisted coding an attractive design option?
• Is there a way round high-complexity coherent detection at all in the context of large-scale MIMO systems?
• Could the radical parallel computing capability of quantum communications be invoked for mitigating the complexity imposed ?
• Or is non-coherentmultiple-symbol sphere-detection a realistic design alternative, which dispenses with channel estimation?
• How do we best exploit the spatial domain at all, when creating large-scale multi-functional antenna arrays?
Many of the above-mentioned design-dilemmas and limitations might be circumvented with the aid of Spatial Modulation (SM), where only a single one of the transmit antennas is activated during any symbol interval [4, 5]. This ’win-win saga’ continues, since apart from the potential benefit of requiring only a single RF chain, SM also has the potential of implicitly conveying extra bits by inferring say log2(M) bits from the specific index of the activated transmit antenna, as discussed in [4, 5].
 L. Hanzo, O. Alamri, M. El-Hajjar, N. Wu: Near-Capacity Multi-Functional MIMO Systems: Sphere-Packing, Iterative Detection and Cooperation, IEEE Press - John Wiley, 2009, 712 pages, http://www-mobile.ecs.soton.ac.uk/newcomms/?q=node/5
 S. Sugiura, S. Chen, and L. Hanzo, “MIMO-aided near-capacity turbo transceivers: Taxonomy and performance versus complexity,” IEEE Communications Surveys Tutorials, vol. 14, pp. 421 –442, 2012, http://eprints.soton.ac.uk/272172/
 P. Botsinis, SX Ng, L. Hanzo: Quantum Search Algorithms, Quantum Wireless, and a Low-Complexity Maximum Likelihood Iterative Quantum Multi-User Detector Design, IEEE Access, Volume: 1, Issue 1, 2013, pp 94 - 122, http://eprints.soton.ac.uk/352164/
 Di Renzo, M. ; Haas, H. ; Ghrayeb, A. ; Sugiura, S. ; Hanzo, L. Spatial Modulation for Generalized MIMO: Challenges, Opportunities, and Implementation, Proceedings of the IEEE Volume: 102, Issue: 1, 2014, pp 56 - 103, http://eprints.soton.ac.uk/354175/
 S. Sugiura, S. Chen, and L. Hanzo, “A universal space-time architecture for multiple-antenna aided systems,” IEEE Communications Surveys Tutorials, vol. 14, pp. 401–420, 2012, http://eprints.soton.ac.uk/272820/
Biography: Lajos Hanzo is a Fellow of the Royal Academy of Engineering (FREng), FIEEE, FIET and a EURASIP. He co-authored 20 IEEE Press - John Wiley books totalling in excess of 10 000 pages on mobile radio communications, published about 1400+ research entries at IEEE Xplore, organised and chaired major IEEE conferences and has been awarded a number of distinctions. Lajos is also an IEEE Distinguished Lecturer. During 2008 - 2012 he was the Editor-in-Chief of the IEEE Press and also a Chaired Prof. at Tsinghua University, Beijing. For further information on research in progress and associated publications please refer to http://www.mobile.ecs.soton.ac.uk.
by Tetsuya Kawanishi, Lightwave Devices Laboratory, National Institute of Information and Communication technology (NICT)
Abstract: Wired and wireless seamless networks comprised of optical fiber and radio-wave links can provide high-speed, resilient and flexible broadband services, where one of important items is precise and high-speed control of lightwave based on advanced photonic technologies such as digital coherent, high-speed electro-optic conversion, radio-over-fiber, etc. This talk focuses on such photonic devices for optical and radio-wave links, and also on expected performance and function of seamless networks.
Biography: Dr Tetsuya Kawanishi received the B.E., M.E., and Ph.D. degrees in electronics from Kyoto University, Kyoto, Japan, in 1992, 1994, and 1997, respectively. From 1994 to 1995, he was with the Production Engineering Laboratory of Panasonic. During 1997, he was with the Venture Business Laboratory, Kyoto University, where he was engaged in research on electromagnetic scattering and on near-field optics. In 1998, he joined the Communications Research Laboratory, Ministry of Posts and Telecommunications (now the National Institute of Information and Communications Technology, NICT), Tokyo, Japan, where he is currently the Director of Lightwave Devices Laboratory of NICT. During 2004, he was a Visiting Scholar in the Department of Electrical and Computer Engineering, University of California at San Diego. His current research interests include high-speed optical modulators and RF photonics. He is a fellow of IEEE.
by Tapan K Sarkar, Syracuse University
Abstract: The objective of this presentation is to illustrate that an electromagnetic macro modeling can properly predict the path loss exponent in a mobile cellular wireless communication. This represents the variation of the path loss with distance from the base station antenna. Specifically, we illustrate that the path loss exponent in a cellular wireless communication is three preceded by a slow fading region and followed by the fringe region where the path loss exponent is four. The size of these regions is determined on the heights of the base station transmitting antennas and the receiving antennas. Theoretically this is illustrated through the analysis of radiation from a vertical electric dipole situated over a horizontal imperfect ground plane as first considered by Sommerfeld in 1909. To start with, the exact analysis of radiation from the dipole is made using the Sommerfeld formulation. The semi-infinite integrals encountered in this formulation are evaluated using a modified saddle point method for field points moderate to far distances away from the source point to predict the appropriate path loss exponents. In addition, Okumura’s experimental data and extensive data taken from seven different base stations in urban environments at two different frequencies will validate the theory. Experimental data reveal that a macro modeling of the environment using an appropriate electromagnetic analysis can accurately predict the path loss exponent for the propagation of radio waves in a cellular wireless communication scenario.
It is also shown that an electromagnetic macro modeling of the environment can provide simulation results comparable to the data as one would obtain in an actual drive test measurement for a cellular environment. The input parameters for the electromagnetic model can be generated using only the physical parameters of the environment like the height of the transmitting and receiving antennas over the ground, their tilts toward the ground, and the electrical parameters of the ground. Such analysis can provide realistic plots for the received power versus separation distance between the receiving and the transmitting base station antennas. The novelty of the electromagnetic analysis technique proposed in this paper lies in its ability to match the simulation and measurement results without any statistical or empirical curve fitting or an adhoc choice of a reference distance. This illustration is made using real data measured for cellular networks in western India and Srilanka.
Biography: Tapan K. Sarkar received the B.Tech. degree from the Indian Institute of Technology, Kharagpur, in 1969, the M.Sc.E. degree from the University of New Brunswick, Fredericton, NB, Canada, in 1971, and the M.S. and Ph.D. degrees from Syracuse University, Syracuse, NY, in 1975. From 1975 to 1976, he was with the TACO Division of the General Instruments Corporation. He was with the Rochester Institute of Technology, Rochester, NY, from 1976 to 1985. He was a Research Fellow at the Gordon McKay Laboratory, Harvard University, Cambridge, MA, from 1977 to 1978. He is now a Professor in the Department of Electrical and Computer Engineering, Syracuse University. His current research interests deal with numerical solutions of operator equations arising in electromagnetics and signal processing with application to system design. He obtained one of the “best solution” awards in May 1977 at the Rome Air Development Center (RADC) Spectral Estimation Workshop. He received the Best Paper Award of the IEEE Transactions on Electromagnetic Compatibility in 1979 and in the 1997 National Radar Conference. He has authored or coauthored more than 300 journal articles and numerous conference papers and 32 chapters in books and fifteen books, including his most recent ones, Iterative and Self Adaptive Finite-Elements in Electromagnetic Modeling (Boston, MA: Artech House, 1998), Wavelet Applications in Electromagnetics and Signal Processing (Boston, MA: Artech House, 2002), Smart Antennas (IEEE Press and John Wiley & Sons, 2003), History of Wireless (IEEE Press and John Wiley & Sons, 2005), and Physics of Multiantenna Systems and Broadband Adaptive Processing (John Wiley & Sons, 2007), Parallel Solution of Integral Equation-Based EM Problems in the Frequency Domain (IEEE Press and John Wiley & Sons, 2009), Time and Frequency Domain Solutions of EM Problems using Integral Equations and a Hybrid Methodology (IEEE Press and John Wiley & Sons, 2010), and Higher Order Basis Based Integral equation Solver (HOBBIES) (John Wiley & Sons 2012).
Dr. Sarkar is a Registered Professional Engineer in the State ofNew York. He received theCollegeofEngineering Research Awardin 1996 and the Chancellor’s Citation for Excellence in Research in 1998 atSyracuseUniversity. He was an Associate Editor for feature articles of the IEEE Antennas and Propagation Society Newsletter (1986-1988), Associate Editor for the IEEE Transactions on Electromagnetic Compatibility (1986-1989), Chairman of the Inter-commission Working Group of International URSI on Time Domain Metrology (1990–1996), distinguished lecturer for the Antennas and Propagation Society from (2000-2003,2011-2013), Member of Antennas and Propagation Society ADCOM (2004-2007), on the board of directors of ACES (2000-2006), vice president of the Applied Computational Electromagnetics Society (ACES), a member of the IEEE Electromagnetics Award board (2004-2007), an associate editor for the IEEE Transactions on Antennas and Propagation (2004-2010) and on the editorial board of Digital Signal Processing – A Review Journal (2003-2012). He is on the editorial board of Journal of Electromagnetic Waves and Applications and Microwave and Optical Technology Letters. He is the chair of the International Conference Technical Committee of IEEE Microwave Theory and Techniques Society # 1 on Field Theory and Guided Waves. He is a member of Sigma Xi and International Union of Radio Science Commissions A and B. He is currently the 2014 President of the IEEE Antennas and Propagation Society. According to Google Scholar, he has a H-index of 55 with 13,485 citations to his work. He is also the president of OHRN Enterprises, Inc., a small business incorporated in New York state (1985) performing various research work for various organizations in system analysis.
He received Docteur Honoris Causa from Universite Blaise Pascal, Clermont Ferrand, France in 1998, from Politechnic University of Madrid, Madrid, Spain in 2004, and from Aalto University, Helsinki, Finland in 2012. He received the medal of the friend of the city of Clermont Ferrand, France, in 2000.
Kien T. Truong