基于M22CMA的盲均衡算法仿真和实现

Simulation and realization of blind equalization algorithm based on M22CMA

CMA算法具有结构简单、计算复杂度小且不占用额外的信道带宽的特点,在无线通信应用中正受到越来越广泛的关注。从CMA算法出发,推导了一种适用于复信号的M22CMA结构,使用QPSK信号对算法进行了Matlab仿真和VHDL验证。仿真和实验结果表明,该算法性能稳定,可用于无线信道中QPSK信号的均衡处理。

CAM algorithm has the characteristic of simple architecture,less computing complexity and no occupation of ex-tra channel bandwidth. More and more attention has been paid to the CMA algorithm in the application of wireless communica-tion. Proceeding from the CMA algorithm,a M22CMA architecture which can be applied to complex signal is derived in this pa-per. Matlab emulation and VHDL verification for the algorithm were performed with QPSK signal. The simulation and experimen-tal results show that the performance of the algorithm is reliable,and it can be used to equalize QPSK signal in the wireless channel.