适用于WCDMA的波束形成算法

Beamforming Algorithm for WCDMA System

文章基于WCDMA系统,对导频辅助波束形成算法进行了改进,并以此构成2D-RAKE。该算法根据最大信干噪比准则(MSINR),利用WCDMA上行链路扰码区分用户的特点来求得干扰加噪声协方差矩阵。该算法在计算干扰加噪声协方差矩阵时不需要训练序列,步骤简单,运算量小,且性能较好,适用于WCDMA系统瑞利衰落环境下的波束形成。

Based on the WCDMA,a pilot aided beamforming algorithm is improved and a 2D-RAKE receiver is formed on this basis. According to the maximum signal to interference and noise ratio （MSINR） criteria, the algorithm makes use of the characteristic of WCDMA distinguishing users with scrabling code to seek the covariance matrix of interference and noise. The improved algorithm is eas- ier and better without training sequence in calculating covariance matrix of interference and noise and reduces the computation load,so it is a suitable beamforming under Rayleigh fading environment in WCDMA.