基于互相关向量估计的自适应盲均衡算法

基于互相关估计的盲MMSE均衡算法以批处理方式估计信道输出向量和信道输入信号之间不同延时的互相关向量,得到MMSE均衡器系数。由于涉及到大型矩阵乘积,若在线实现,计算量较大。根据该算法对信道阶数过估计不敏感特性,推导出基于互相关向量估计的盲MMSE均衡的自适应实现算法。自适应算法将矩阵和矩阵相乘转换为矩阵和向量的相乘,大大减少了均衡系数更新计算量,计算量仅为O(K2)(K为矩阵维数)。仿真结果显示自适应算法的收敛性能远远优于目前存在的自适应算法。

Blind Adaptive MMSE Equalization Algorithm Based on Cross-Correlation Vector Estimation

The blind MMSE equalization batch algorithm based on the cross-correlation vector estimation obtains the equalizer coefficients by estimating the cross-correlation of different delay between the measurement vector and input signal vector,and has the disadvantage of computational complexity because of the matrix operation.Due to the robustness of the algorithm to channel order mismatch,an efficient fast adaptive implementation of the algorithm is proposed to recursively update the equalizer coefficient vecto...