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Home | Seminars and Symposia | Past seminars/symposia: Thursday, May 9, 2013

DTC Seminar Series

On Pareto-Optimal Beam Design for Coordinated Beamforming in Next Generation Wireless Networks


Youngchul Sung
KAIST, Korea

Thursday, May 9, 2013
3:30 p.m. reception
4:00 p.m. seminar

401/402 Walter Library

SungThe problem of interference control is one of the main issues in current and future wireless communication networks. Among the many ways of handling interference, multiple antenna techniques and basestation cooperation are considered as the key technologies to the interference problem. Indeed, the 3GPP Long-Term Evolution-Advanced (LTE) considers the basestation cooperation and MIMO techniques to mitigate inter-cell interference under the name of Coordinated Multipoint (CoMP). In this talk, the challenges and the latest advances in this area are introduced. In particular, the Pareto-optimal coordinated beamforming problem is considered in depth for multiple-input single-output (MISO) and multiple-input multiple-output (MIMO) interference channels which model the interference situation at the cell edge. New ways of Pareto-optimal beam design based on relaxed zero forcing/sequential orthogonal projection combining for the MISO interference channel and Riemannian geometry for the MIMO interference channel are introduced.


Youngchul Sung (S'92-M'93-SM'09) received B.S. and M.S. degrees from Seoul National University, Seoul, Korea, in Electronics Engineering in 1993 and 1995, respectively. After working at LG Electronics Ltd., Seoul, Korea, from 1995 to 2000, he joined the Ph.D. program in 2000 and received the Ph.D. degree in 2005 in Electrical and Computer Engineering from Cornell University, Ithaca, NY. From 2005 until 2007, he was a senior engineer in the Corporate R & D Center of Qualcomm, Inc., San Diego, CA, and participated in design of Qualcomm's 3GPP R6 WCDMA Basestation Modem. Since 2007 he has been on the faculty of the Department of Electrical Engineering in KAIST, Daejeon, Korea. Dr. Sung's research interests include signal processing for communications, statistical signal processing, and asymptotic statistics with applications to next generation wireless communications and related areas. Dr. Sung is a senior member of IEEE, an associate member of IEEE Signal Processing Society Signal Processing for Communications and Networking (SPCOM) Technical Committee, an associate editor of IEEE Signal Processing Letters, a member of Signal and Information Processing Theory and Methods (SIPTM) Technical Committee of Asia-Pacific Signal and Information Processing Association (APSIPA), vice chair of IEEE ComSoc Asia-Pacific Board MCC, and TPC member of conferences including Globecom 2012/2011/2010/2009, ICC 2011, MILCOM 2010, DCOSS 2010, WiOpt 2009 and its sponsorship chair, APSIPA 2012/2011/2010/2009, IEEE SAM 2008. Recently, he served as a guest editor of the 2012 IEEE JSAC special issue "Theories and Methods for Advanced Wireless Relays."