提高自适应通道均衡器性能的对角加载法

A Method of Diagonal Loading for Improving Adaptive Channel Equalizer's Performance

在自适应通道均衡中,采用基于最小二乘的广义求逆法求解均衡器权系数时,矩阵病态会严重影响均衡器的校正性能.本文采用对角加载法解决矩阵病态问题,分析了对角加载对均衡器性能的影响.仿真实验表明,对角加载在解决矩阵病态的基础上,可以大大提高自适应均衡器的性能.

In adaptive channel equalizing, the generalized inverse method based on least-square is used to solve an equalizer's weight coefficient, and matrix's morbidity may severely degrade the equalizer's per-formance.This paper exploits the method of diagonal loading to solve the matrix's morbidity, and then the diagonal loading influence on the equalizer's performance is studied.Computer simulation results show that diagonal loading can solve the matrix's morbidity, meanwhile the adaptive channel equalizer's performance can be greatly improved.