基于仿射投影的CMA盲均衡算法

A CMA Blind Equalization Algorithm Based on Affine Projection

经典CMA算法计算复杂度低,性能稳健,但收敛速度慢.传统的仿射投影算法能够加快算法的收敛速度,但算法复杂度较高点.针对以上问题,该文将仿射投影思想引入到CMA算法,克服了两种算法的缺点,加快了算法的收敛速度,降低了算法的复杂度.通过实验仿真表明,该算法适用于短波信号的盲均衡,且复杂度较低,收敛速度更快.

Blind equalization is one of the hot technologies in digital shortwave communication. The Classic Constant Modulus Algorithm is with low complexity and steady performance,but with low convergence speed. Traditional affine projection algorithm can accelerate the convergence rate,but with the higher complexity of the algorithm. To solve the problem,this paper introduces the idea of affine projection to the Constant Modulus Algorithm,which overcomes the shortcomings of the first two algorithms,speeds up the convergence rate,reduces the complexity of the algorithm. The simulation results show that the algorithm is suitable for blind equalization of shortwave signals,with less complex and faster convergence.