Analysis of MMSE beamformer for DS-CDMA systems

被引：0
|
作者：
Wang, NY [1 ]
Agathoklis, P [1 ]
Antoniou, A [1 ]
机构：
[1] Univ Victoria, Dept Elect & Comp Engn, Victoria, BC V8W 3P6, Canada
来源：
2001 IEEE PACIFIC RIM CONFERENCE ON COMMUNICATIONS, COMPUTERS AND SIGNAL PROCESSING, VOLS I AND II, CONFERENCE PROCEEDINGS | 2001年
关键词：
beamformer; antenna array; DS-CDMA;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The performance of two commonly used criteria to obtain the optimum beamforming weights in adaptive antenna arrays, namely, the chip-based mean-squared-error (MMSE) criterion and the symbol-based MMSE criterion, is investigated and a qualitative explanation for the difference in their performance is given. In the first criterion, spatial diversity is exploited in the determination of the beamforming weights. In the second, code separation and spatial diversity are utilized. It is shown that the utilization of code separation in the determination of beamforming weights leads to less noise magnification resulting from interference rejection. Analysis and simulation results show that the symbol-based MMSE criterion offers a better performance than the chip-based MMSE criterion in the presence of multiple access interference.
引用
收藏
页码：128 / 131
页数：4
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