標題: A closed-form approximation for capacity of multiuser MIMO broadcast systems: A virtual user approach
作者: Wang, Li-Chun
Yeh, Chu-Jung
Li, Chi-Fang
交大名義發表
National Chiao Tung University
關鍵字: MIMO systems;zero-forcing beam-forming;scheduling;MIMO broadcast channels
公開日期: 2008
摘要: Besides delivering high data rates in a point-to-point scenario, multi-input multi-output (MIMO) antenna techniques can broadcast personalized data to multiple users in the point-to-multipoint scenario. Zero-forcing beamforming (ZFB) is a suboptimal but simple MIMO broadcast technique, which basically decouple the MIMO channel into many parallel single-input single-output (SISO) channels. In this article, we first derive the closed-form expression for the sum rate of the ZFB MIMO broadcast system with random user selection. Secondly, under the condition with finite users, we develop a virtual user approach approximation method for estimating the sum rate of the ZFB MIMO broadcast system with exhaustive user selection. Our results indicate that the proposed analysis method can accurately estimate the optimal sum-rate throughput of ZFB.
URI: http://hdl.handle.net/11536/1475
ISBN: 978-1-4244-1996-8
ISSN: 1525-3511
期刊: WCNC 2008: IEEE WIRELESS COMMUNICATIONS & NETWORKING CONFERENCE, VOLS 1-7
起始頁: 408
結束頁: 412
Appears in Collections:Conferences Paper