【摘要】 针对DS-CDMA系统,在基于特征空间(ESB)自适应波束形成算法的基础上提出了一种基于最大特征值的改进算法,该算法利用阵列接收信号协方差矩阵最大特征值所对应的特征向量构成子空间,摈弃了权向量在干扰信号子空间及噪声子空间中的分量。改进算法结构简单、运算量低。计算机仿真和分析证明该算法性能要优于常规ESB算法的性能。更多还原

【Abstract】 In DS-CDMA system,an improved adaptive beamforming algorithm based on the largest eigenvalue is proposed in this paper,which is on the fundamentals of the Eigenspace-Based (ESB) Algorithm. This algorithm builds sub-space with the eigenvector corresponding to the largest eigenvalue of the sampling covariance matrix of array output,eliminating the weight vector in the interference signal subspace and noise subspace. The proposed algorithm has simpler structure and lower operation cost. Theoretical analyses and simulation results show that the improved algorithm achieves advantages over existing ESB algorithm.更多还原