Codebook Based Space Division Multiple Access with Partial Side Information

Myoung-Won LEE  Cheol MUN  Dong-Hee KIM  Jong-Gwan YOOK  

IEICE TRANSACTIONS on Communications   Vol.E91-B   No.9   pp.3017-3020
Publication Date: 2008/09/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.9.3017
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
multiuser MIMO systems,  SDMA,  precoder codebook,  

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In this letter, a codebook based multiuser MIMO precoding scheme is proposed for a space-division multiple access (SDMA) system with limited feedback. Focusing on the case of SDMA systems with two transmit antennas, a precoder codebook design is proposed based on the idea that a precoder inducing larger fluctuations in the signal to interference and noise ratio (SINR) at each link can lead to a larger gain in terms of multiuser diversity. It is shown that the proposed multiuser MIMO precoding outperforms existing multiuser MIMO techniques in terms of the average system throughput.