Abstract: This paper derives an improved CMA blind equalization algorithm based on the power of the equalizer’s output signal. After analyzing the changing rule of output signal of equalizer, it promotes a new vary step size CMA algorithm based on the power of the equalizer’s output signal. According to the selection regulation of the unknown parameter, simulation result shows that the new algorithm has better convergence performance.

Key words: blind equalization, Constant Model Algorithm(CMA), vary step size, power of output signal

摘要： 从理论上分析了均衡器输出信号功率的变化规律，并将它作为控制步长的参量，形成一种基于均衡器输出信号功率的变步长CMA盲均衡算法。分析了算法中待定参数的选取原则，通过计算机进行了仿真实验，结果验证了改进算法相对于传统恒模算法有更好的收敛 性能。

关键词: 盲均衡, 恒模算法, 变步长, 输出信号功率

CLC Number: 

• TP301