2023-04-25
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2023年广东省毫米波与太赫兹重点实验室专业系列讲座（二）
时间：2023年4月27日（周四）下午4:30pm-5:30pm
地点：逸夫科学馆504, 华南理工大学五山校区
香港中文大学吴克利教授报告
报告题目：Channel Capacity Oriented Envelope Correlation Coefficient (ECC-M) for Multiple Antennas on Wireless Terminals
报告人：吴克利博士（香港中文大学电子工程系教授，IEEE Fellow，香港中文大学射频辐射研究实验室主任，中国空间技术研究院客座教授）
报告摘要：
The fundamental problem for wireless communications is to ensure a reliable communication over an unreliable channel. Two solutions to solve the problem: a physical solution and a system solution. Claude Shannon in his famous paper “A mathematical theory of communication” (1948) gave a clear roadmap to the solutions. In today’s Multiple Input Multiple Output (MIMO) systems, the channel precoding/decoding is a proven system solution, whereas the antenna array decisively determines the performance of the physical solution.
This talk will show how to assess a MIMO antenna array on a terminal device from Shannon’s view of a communication system. Starting from a brief discussion on Shannon’s theorem, we will present one of our recent works in connecting Shannon’s theorem with the antenna array theory: how to assess a multiple antenna array for a wireless terminal by a channel capacity-oriented envelope correlation coefficient (ECC-M). Originated from the rudimentary law of ergodic channel capacity, the envelope correlation coefficient for multiple antennas (ECC-M) is proved to holistically reflect the impact of radiation patterns and total efficiencies of multiple antennas on channel capacity. The closed-form ECC-M expressions for Rayleigh fading channel model and ray-based spatial channel model are given, leading to an explicit metrics for describing the Over-the-Air (OTA) performance of a MIMO antenna. It can be justified that the difference in channel capacities of two multiple antenna systems is highly relevant to their ECC-Ms at high signal-to-noise ratio (SNRs). The ECC-M is also experimentally validated through OTA throughput measurement.
报告人简介：
Ke-Li Wu received the B.S. and M.Eng. degrees from the Nanjing University of Science and Technology, Nanjing, China, in 1982 and 1985, respectively, and the Ph.D. degree from Laval University, Quebec, QC, Canada, in 1989. From 1989 to 1993, he was with the Communications Research Laboratory, McMaster University, as a Research Engineer and Group Manager. In March 1993, he joined the Corporate R&D Division, COM DEV (now Honeywell Aerospace), Cambridge, ON Canada, where he was a Principal Member of Technical Staff. Since October 1999, he has been with The Chinese University of Hong Kong, Hong Kong, where he is a Professor and the Director of the Radiofrequency Radiation Research Laboratory.
He has authored numerous publications in the areas of EM modelling, microwave passive components, microwave filters and practice, and MIMO antenna arrays. His current research interests include electromagnetic modeling of high speed circuits, theory and practice of microwave filters, MIMO array antennas for wireless communications, and IoT technologies and applications.
Prof. Wu is a Fellow of IEEE, a member of IEEE MTT-5 subcommittee (Filters and Passive Components) and also serves as a TPC member for many prestigious international conferences including International Microwave Symposium. He was the recipient of the 1998 COM DEV Achievement Award and Asia Pacific Microwave Conference Prize in 2008 and 2012.