Transmission Mode Selection Algorithms for Spatially Correlated MIMO Interference Channels

被引：5

作者：

Kim, Jin-Sung ^{[1
]}

Lee, Kyoung-Jae ^{[1
]}

Park, Haewook ^{[1
]}

Lee, Inkyu ^{[1
]}

机构：

[1] Korea Univ, Sch Elect Engn, Seoul 136713, South Korea

来源：

IEEE TRANSACTIONS ON SIGNAL PROCESSING | 2012年 / 60卷 / 08期

基金：

新加坡国家研究基金会;

关键词：

Interference channels; multiple-input multiple-output (MIMO); mode selection; ALIGNMENT; DOWNLINK; DIAGONALIZATION; NETWORKS; FREEDOM;

D O I：

10.1109/TSP.2012.2198471

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 this paper, we study - user multiple-input multiple-output (MIMO) interference channels (IC) in the presence of antenna correlations. Although interference alignment (IA) achieves the maximum multiplexing gain, i.e., degrees of freedom (DOF), the actual performance is degraded due to ill-conditioned channels caused by the antenna correlations. To enhance the overall system performance, we thus consider a transmission mode selection scheme which adaptively determines the number of data streams at each transmitter-receiver pair in a distributed fashion using local channel state information (CSI). A filter update process is exploited in order to estimate the performance regarding each transmission mode successively by considering the actual channel conditions as well as signal-to-noise ratio (SNR). Simulation results show that our mode selection scheme enhances the sum rate performance compared to the conventional full data stream transmissions in spatially correlated MIMO IC.

引用

页码：4475 / 4479

页数：5

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