报告题目： Interference Mitigation using Device-to-Device Link

演讲人: Prof. Wei Yu, the University of Toronto, Toronto, Ontario, Canada, 

时间：2015年7月29日（周三）上午10点

地点：SEIEE 5-301A 无线所会议室

联系人：陶梅霞

报告摘要：In this talk, we consider the use of device-to-device link for cooperative communication in a cellular environment, where a nearby user terminal acts as a relay in enabling both signal enhancement and common interference rejection at the destination. Assuming Gaussian transmission and Gaussian test-channel in the compress-and-forward relaying strategy for a multiple-input multiple-output (MIMO) relay channel with a finite-capacity out-of-band relay-destination link and with arbitrarily correlated noises, we suggest an algorithm for joint optimization of the transmission strategy at the source and compression strategy at the relay. A coordinate ascent approach is employed to iteratively optimize the transmit covariance matrix for reception at both relay and destination, and for optimizing the quantization noise covariance matrix using a simultaneous diagonalization approach. Assuming uniqueness of the optimal solution in iterations, the algorithm converges to a stationary point of the overall problem. We further introduce the concept of antenna pooling, and illustrate that the optimized use of the device-to-device relay link is capable of significantly improving the user throughput in an interfering cellular environment. The relay link can enhance the overall transmission degree-of-freedom by enabling not only joint reception but also interference rejection across the user terminals.

演讲人简介：Wei Yu (S'97-M'02-SM'08-F’14) received the B.A.Sc. degree in Computer Engineering and Mathematics from the University of Waterloo, Waterloo, Ontario, Canada in 1997 and M.S. and Ph.D. degrees in Electrical Engineering from Stanford University, Stanford, CA, in 1998 and 2002, respectively. Since 2002, he has been with the Electrical and Computer Engineering Department at the University of Toronto, Toronto, Ontario, Canada, where he is now Professor and holds a Canada Research Chair (Tier 1) in Information Theory and Wireless Communications. His main research interests include information theory, optimization, wireless communications and broadband access networks.

Prof. Wei Yu currently serves on the IEEE Information Theory Society Board of Governors (2015-17). He is an IEEE Communications Society Distinguished Lecturer (2015-16). He served as an Associate Editor for IEEE Transactions on Information Theory (2010-2013), as an Editor for IEEE Transactions on Communications (2009-2011), as an Editor for IEEE Transactions on Wireless Communications (2004-2007), and as a Guest Editor for a number of special issues for the IEEE Journal on Selected Areas in Communications and the EURASIP Journal on Applied Signal Processing. He was a Technical Program co-chair of the IEEE Communication Theory Workshop in 2014, and a Technical Program Committee co-chair of the Communication Theory Symposium at the IEEE International Conference on Communications (ICC) in 2012. He was a member of the Signal Processing for Communications and Networking Technical Committee of the IEEE Signal Processing Society (2008-2013). Prof. Wei Yu received a Steacie Memorial Fellowship in 2015, an IEEE Communications Society Best Tutorial Paper Award in 2015, an IEEE ICC Best Paper Award in 2013, an IEEE Signal Processing Society Best Paper Award in 2008, the McCharles Prize for Early Career Research Distinction in 2008, the Early Career Teaching Award from the Faculty of Applied Science and Engineering, University of Toronto in 2007, and an Early Researcher Award from Ontario in 2006. He was named a Highly Cited Researcher by Thomson Reuters in 2014.

Prof. Wei Yu is a Fellow of IEEE. He is a registered Professional Engineer in Ontario.