報告題目：Sum Secrecy Rate Maximization for Full-Duplex Two-Way Relay Networks Using Alamouti-Based Rank-Two Beamforming
主講嘉賓：利強電子科技大學副教授
邀請人：吳曉曉老師
時間：2017年 7月31日（周日）下午3:00
地點：深圳大學南區(qū)基礎實驗樓北座信息工程學院N710會議室
報告內容：
In this talk, we will consider a two-way communication scenario where two single-antenna nodes, operating under full-duplex mode, exchange information to one another throughthe aid of a full-duplex multiantenna relay, and there is another single-antenna node who intends to eavesdrop. The relay employs artificial noise (AN) to interfere with theeavesdroppers channel, and amplify-forward Alamouti-based rank-two beamforming to establish the two-way communication links of the legitimate nodes. Our problem is tooptimize the rank-two beamformer and AN covariance for sum secrecy rate maximization (SSRM). This SSRM problem is nonconvex, and we develop an efficient solution approachusing semidefinite relaxation (SDR) and minorization-maximization (MM). We prove that SDR is tight for the SSRM problem and, thus, introduces no loss. Also, we consider aninexact MM method where an approximate but computationally cheap MM solution update is used in place of the exact update in conventional MM. We show that this inexact MMmethod guarantees convergence to a stationary solution to the SSRM problem. The effectiveness of our proposed approach is further demonstrated by an energy harvestingscenario extension, and by extensive simulation results.
嘉賓簡介：
Qiang Li received the B.Eng. and M.Phil. degrees in communication and information engineering from the University of Electronic Science and Technology of China (UESTC),Chengdu, China, and the Ph.D. degree in electronic engineering from the Chinese University of Hong Kong (CUHK), Hong Kong, in 2005, 2008, and 2012, respectively. From August2011 to January 2012, he was a Visiting Scholar at the University of Minnesota, Twin Cities, Minneapolis, MN, USA. From February 2012 to October 2013, he was a ResearchAssociate with the Department of Electronic Engineering and the Department of System Engineering and Engineering Management, CUHK. Since Nov. 2013, he has been with theSchool of Communication and Information Engineering, UESTC, where he is currently an Associate Professor. His research interests include convex optimization and itsapplications in signal processing with an emphasis on the physical-layer security and full-duplex communications. He has been a TPC member of many conferences, e.g., ICASSPand SPAWC, VTC and WCNC, and published more than 40 papers on the IEEE top-tier journals and flagship conferences. Dr. Li was a recipient of the First Prize Paper Award inthe IEEE Signal Processing Society Postgraduate Forum Hong Kong Chapter in 2010, and a co-recipient of a Best Paper Award of IEEE PIMRC 2016, and the Best Paper Award of IEEESIGNAL PROCESSING LETTERS 2016.
歡迎各位老師和同學參加。
