A statistical analysis of the dual-mode CMA

Renato Candido, Magno T. M. Silva, Maria D. Miranda, Vítor H. Nascimento. A statistical analysis of the dual-mode CMA. In: IEEE International Symposium on Circuits and Systems, 2010, Paris. Proceedings of ISCAS’2010, 2010, pp.2510–2513.


Blind equalization algorithms with good convergence and tracking properties and numerical robustness are desired to ensure the good performance of communications systems. In this paper, we present transient and steady-state analyses for the dual-mode constant modulus algorithm (DM-CMA), a version of CMA that avoids its well-known divergence problem. We show that DM-CMA is able to avoid divergence without degradation of mean-square performance. Good agreement between analytical and simulation results is observed.


Adaptive filters, Adaptive equalizers, Blind equalization, Unsupervised learning, Constant modulus algorithm.