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Issue:
A Novel Beamforming Algorithm in CDMA
Author(s):
FU Yongsheng
,
SHEN Lianfeng
Pages:
344
-
348
Year:
2003
Issue:
4
Journal:
JOURNAL OF APPLIED SCIENCES
Keyword:
波束形成
;
Rake合并
;
最大信号噪声干扰比准则
;
广义特征矢量
;
Abstract:
基于CDMA环境提出了一种新的波束形成算法,并且以此形成二维Rake合并器.这种新的方法,根据最大信号噪声干扰比准则推导出计算权矢量的公式,将求导向矢量再求逆的两步问题转化为直接求Hermit阵的最大广义特征值和特征向量,且使用解扩后数据计算干扰加噪声的协方差阵.该法计算量小,数据存储量小,不需要训练序列和参考信号,步骤简单且性能优于导频辅助法,计算量小于码滤波法.此法可应用于第三代移动通信系统中快衰落环境下的波束形成.
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