A low complexity concurrent soft decision-directed constant modulus blind equalization algorithm
Renjie Liu · Journal of Liaoning Technical University · 2009
Based on the concurrent soft decision-directed constant modulus algorithm(CMA+SDD) ,the blind equalization greatly improves the CMA's performance. However,the CMA+SDD requires a large amount of computations. In this paper,a simplified algorithm is proposed based on the concurrent soft decision-directed CMA. The proposed algorithm partitions a complex plan stochastically without generating a scaled-down constellation. At the same time,the proposed algorithm overcomes the disadvantages associated with a fixed complex plan partition. Simulation results for 16QAM show that the proposed algorithm offers a faster convergence speed than that of S. Chen’ algorithm and performs very well at a low SNR.