A simple blind equalization approach based on multi-mode error switch

Blind signal processing has been one of the key technology in communication and signal processing area. In wireless communication systems there always exists severely inter-symbol interference (ISI) and multiple access interference (MAI). In this paper, a new blind equalization algorithm for MQAM digital communication system based on the multi-mode error switch is proposed. The algorithm is based on the constant modulus characteristic of the transmitted signal and the multi-mode error switch is used during the training. Analysis and computer simulations show that the new algorithm can reduce the remainder error and the computational complexity , ensure the convergence rates, and the convergence performance is much better than that of algorithm in literature.