Effect of Imperfect Transmit Correlation on Statistical Beamforming in Multi-User Cellular Systems

被引：1

作者：

Cho, Hee-Nam ^{[1
,2
]}

Park, Han-Jun ^{[1
,2
]}

Lee, Yong-Hwan ^{[1
,2
]}

机构：

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

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

来源：

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2010年 / 9卷 / 11期

关键词：

Co-channel interference (CCI); imperfect transmit correlation; statistical beamforming; BROADCAST CHANNELS; THROUGHPUT; FEEDBACK; CAPACITY;

D O I：

10.1109/TWC.2010.090210.100142

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：

This letter investigates the effect of imperfect transmit correlation on the performance of statistical beamforming in terms of average signal-to-interference plus noise ratio (SINR) in a correlated multi-user multi-antenna cellular system. The average SINR of the statistical beamforming depends on the accuracy of transmit correlation information as well as the characteristics of co-channel interference (CCI) from adjacent base stations. It is shown by means of multivariate Taylor series expansion that the average SINR degradation due to imperfect transmit correlation is associated with the mean squared error (MSE) and the number of quantization bits, and that those effect significantly varies depending on the correlation magnitude and the phase difference between the transmit correlation coefficient of the intended and CCI channel.

引用

页码：3335 / 3340

页数：6

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