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提出了一种适用于码分多址的波束形成方法 ,并从理论上证明了该方法在干扰数趋于无穷大时 ,可获得最小方差意义下的最优解 .仿真实验表明 ,在用户数大于阵元数时 ,该方法近似于最小方差法波束形成器 ,并且不需计算阵列响应协方差矩阵及其逆矩阵 .该方法具有运算量小、无相干源问题等优点 ,特别适用于多址干扰的消除 .
A beamforming method suitable for code division multiple access is proposed and theoretically proved that this method can get the optimal solution in the sense of minimum variance when the number of interference tends to infinity.The simulation results show that when the number of users is more than This method is similar to the least square method beamformer, and does not need to calculate the array response covariance matrix and its inverse matrix.It has the advantages of low computational complexity and no coherent source, and is especially suitable for multiple access interference Elimination.