Linear Transmitter Precoding Design with Matching Weighted SLNR for Multiuser MIMO Downlink Systems

Chuiqiang SUN  Jianhua GE  Rong SUN  Xinxin BAO  

Publication
IEICE TRANSACTIONS on Communications   Vol.E95-B   No.12   pp.3915-3917
Publication Date: 2012/12/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E95.B.3915
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
Keyword: 
multiuser,  precoding,  MIMO,  SLNR,  bit error rate,  

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Summary: 
A multiuser precoding algorithm based on matching weighted signal-to-leakage-and-noise ratio (SLNR) is proposed for multiuser MIMO downlink systems. In the proposed algorithm, the matching weight factor is selected based on the effective channel gain, and the leakage power caused by each user is weighted by the factor. The precoding vector is obtained by maximizing the matching weighted SLNR. Simulation results show the superiority of the proposed scheme in terms of bit error rate over the conventional SLNR schemes.