[CPCC] Seminar by Prof. Wing-Kin (Ken) Ma

Hamid Jafarkhani hamidj at uci.edu
Mon Nov 5 13:38:10 PST 2012


Title: Semidefinite Relaxation and Its Applications in Signal Processing and Communications

Speaker: Prof. Wing-Kin (Ken) Ma

Date: Nov. 9, 2012, Fri.

Time: 2:00 - 3:00  PM

Venue: EH 2430

ABSTRACT

Semidefinite relaxation (SDR) has recently been recognized as a very
useful and handy tool in signal processing and communications. It is
a powerful approximation technique for a host of difficult optimization
problems, generally taking the form of nonconvex quadratically
constrained quadratic programs. SDR has found numerous applications;
among them particularly important applications are MIMO detection
(which covers multi-user, multi-antenna, space-time,...), transmit
beamforming (which covers classical single-cell multiuser downlinks,
multicell coordinated multiuser downlinks, unicasting and multicasting,
cognitive radio, physical layer security, one-way and two-way relays...),
and sensor network localization. And the application scope is still
expanding. This talk aims at giving an overview of SDR. I will describe
essential ideas and practical deployment aspects of SDR, and summarize
some of the key theoretical results offered by optimization researchers,
which will be presented from a non-expert viewpoint. And certainly, the
talk will cover the important SDR applications, and some very forefront
advances in those applications.


SPEAKER'S BIOGRAPHY

Wing-Kin Ma received the B.Eng. degree in electrical and electronic
engineering from the University of Portsmouth, Portsmouth, U.K., in
1995 and the M.Phil. and Ph.D. degrees, both in electronic engineering,
from the Chinese University of Hong Kong (CUHK), Hong Kong, in 1997 and
2001, respectively. He is currently an Assistant Professor with the
Department of Electronic Engineering, CUHK. From 2005 to 2007, he was
also an Assistant Professor with the Institute of Communications
Engineering, National Tsing Hua University, Taiwan, R.O.C. Prior to that,
he held various research positions with McMaster University, Canada;
CUHK; and the University of Melbourne, Australia. His research interests
are in signal processing and communications, with a recent emphasis on
MIMO communication, convex optimization, blind source separation, and
signal processing for hyperspectral remote sensing. Dr. Ma is currently
Associate Editor of IEEE Signal Processing Letters. He is also Guest
Editor of IEEE Journal of Selected Areas in Communications on the special
issue “Signal Processing Techniques for Wireless Physical Layer Security,”
and IEEE Signal Processing Magazine on the special issue “Signal and Image
Processing in Hyperspectral Remote Sensing.” He previously served as
Associate Editor of IEEE Transactions on Signal Processing, and Guest
Editor of IEEE Signal Processing Magazine. He was a Speaker of a Tutorial
in EUSIPCO 2011. He is a recipient of the 2009 Exemplary Teaching Award
given by the Faculty of Engineering, CUHK, and co-recipient of an ICASSP
2011 Best Student Paper Award and a WHISPERS 2011 Best Paper Award.



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