Modified constant modulus algorithm for blind channel equalization
Sun Shouyu · Journal of Tsinghua University(Science and Technology) · 2003
In digital communications, t he constant modulus algorithm (CMA) for blind channel equalization has some disa dvantages such as slow convergence speed and phase rotation. Therefore, a modifi ed constant modulus algorithm (MCMA) was developed for blind channel equalizatio n. The algorithm minimizes a modified error function and the learning-rate is m ultiplied by the received sequences. The performance of the two algorithms was c ompared for a QAM signal. Extensive simulation results demonstrated that the MCM A has faster convergence and smaller intersymbol interference than the CMA. The equalizer output has neither phase rotation nor delay.