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Distributed Precoding with Limited Interference Leakage for MU-MIMO System
Weidong WANG Gaofeng CUI Sixing LU Yinghai ZHANG
IEICE TRANSACTIONS on Communications
Publication Date: 2011/12/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: Special Section LETTER (Special Section on Cooperative Communications for Cellular Networks)
network MIMO, max-SLNR, distributed precoding,
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The capacity of Multiple-Input Multiple-Output networks (MIMO) is seriously degraded by interference. Many solutions have been given to overcome this problem, such as network MIMO and maximum signal to leakage plus noise ratio (max-SLNR). In this letter, a downlink distributed precoding method is proposed to nullify the intra-cell interference and mitigate the negative effect on other cell users. This method can keep the merits of network MIMO and max-SLNR while overcoming their shortcomings. Numerical results show that the proposed precoding method outperforms Block Diagonalization (BD), max-SLNR and Block Diagonalization with Other Cell Interference (BD-OCI).