Leakage Based Precoding for Multi-User MIMO-OFDM Systems

被引：36
|
作者：
Sadek, Mirette [1 ]
Aissa, Sonia [1 ,2 ]
机构：
[1] King Abdullah Univ Sci & Technol, Phys Sci & Engn Div, Thuwal, Saudi Arabia
[2] Univ Quebec, INRS, Montreal, PQ H3C 3P8, Canada
来源：
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2011年 / 10卷 / 08期
关键词：
Multiple-input multiple-output (MIMO); orthogonal frequency division multiplexing (OFDM); precoding; signal-to-leakage-plus-noise ratio (SLNR); channel compensation;
D O I：
10.1109/TWC.2011.062111.101748
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In downlink multi-user multiple-input multiple-output (MIMO) transmissions, several precoding schemes have been proposed to decrease interference among users. Notable among these precoding schemes is one that uses the signal-to-leakage-plus-noise ratio (SLNR) as an optimization criterion. In this paper, leveraging the efficiency of the SLNR optimization, we generalize this precoding scheme to MIMO orthogonal frequency division multiplexing (OFDM) multi-user systems where the OFDM is used to overcome the inter-symbol-interference (ISI) introduced by multipath channels. We also introduce a channel compensation technique that reconstructs the channel at the transmitter for every time instant given a significantly lower channel feedback rate by the receiver.
引用
收藏
页码：2428 / 2433
页数：6
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