A Concurrent Constant Modulus Algorithm and Soft Decision-Directed Algorithm for Blind Equalization
Ping Wang · Signal Processing · 2007
A new blind equalization based on concurrent constant modulus algorithm(CMA)and soft decision-directed(SDD) adaptation is proposed.The new algorithm(CMA+SDD)demonstrates significant improvements in the convergence rates and the residu- al error after convergence compared with CMA,the carrier phase correction can be accomplished at the same time.Extensive simulation shows that compare with the concurrent CMA and DD algorithm,the proposed algorithm has the similar steady-state equalization perform- ance and faster convergence speed with high SNR,but has the better equalization performance and faster convergence speed with low SNR.