A User Selection Algorithm Based on the Combination of Block Diagonalization and SLNR Maximization

In this paper, a new precoding scheme is proposed based on the combination of Block Diagonalization (BD) and SLNR (Signal Leakage Noise Ratio) maximization. Then a new user selection algorithm is proposed based on the joint precoding scheme. BD precoding will cause performance loss in the single ant...

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Published inApplied Mechanics and Materials Vol. 347-350; pp. 2474 - 2478
Main Authors Liu, Nai An, Fu, Wei Hong, Wang, Cheng, Tian, Wei Xin, Kong, Qing Liang
Format Journal Article
LanguageEnglish
Published Zurich Trans Tech Publications Ltd 01.08.2013
Subjects
User Selection
Signal Leakage Noise Ratio (SLNR)
Block Diagonalization (BD)
Joint Precoding
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Summary:In this paper, a new precoding scheme is proposed based on the combination of Block Diagonalization (BD) and SLNR (Signal Leakage Noise Ratio) maximization. Then a new user selection algorithm is proposed based on the joint precoding scheme. BD precoding will cause performance loss in the single antenna terminals when the number of terminal antenna is inconsistent. The algorithm we proposed can overcome the drawback by using the maximum SLNR for single-antenna users and BD precoding for multi-antenna users respectively. Simulation results show that the proposed algorithm will enhance the system sum-rate performance significantly when SNR (Signal Noise Ratio) over 5dB. The performance improves by 30% when SNR reaches 20dB.
Bibliography:Selected, peer reviewed papers from the 2013 International Conference on Precision Mechanical Instruments and Measurement Technology (ICPMIMT 2013), May 25-26, 2013, Shenyang, Liaoning, China
ISBN:3037857846
9783037857847
ISSN:1660-9336
1662-7482
1662-7482
DOI:10.4028/www.scientific.net/AMM.347-350.2474