Adaptive Beamforming with Dimension Reduction in Spatially Correlated MISO Channels

被引：9

作者：

Ko, Jae-Yun ^{[1
]}

Lee, Yong-Hwan ^{[2
,3
]}

机构：

[1] Samsung Elec Co Ltd, Suwon 443742, Gyeonggi Do, South Korea

[2] Seoul Natl Univ, Sch Elect Engn & Comp Sci, Seoul 151744, South Korea

[3] Seoul Natl Univ, INMC, Seoul 151744, South Korea

来源：

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2009年 / 8卷 / 10期

关键词：

Beamforming; limited feedback; spatially correlated channels;

D O I：

10.1109/TWC.2009.090121

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 propose an adaptive beamforming scheme that generates the beam weight using dominant eigenvectors of the spatial covariance matrix. The number of eigenvectors used for the generation of beam weight is determined to maximize the signal-to-noise ratio (SNR) for given feedback constraints (e.g., the amount of feedback information and feedback delay). It is shown that the conventional limited feedback beamforming and eigen-beamforming are special cases of the proposed scheme. Simulation results show that the proposed beamforming scheme can effectively be applied to spatially correlated channels.

引用

页码：4998 / 5002

页数：5

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