A wideband blind equalizer of fractionally spaced CMA
Xuchu Dai · 2009
Based on subband decomposition technique,a new structure of fractionally spaced constant modulus algorithm(FSE-CMA) equalizer was proposed for wideband wireless transmission.The proposed blind equalizer effectively combines the subband decomposition technique and sub-convolution method.The pre-whiten effect of the subband decomposition can significantly improve the convergence speed of FSE-CMA.On the other hand,since the signals are down-sampled and processed in parallel by means of both the subband decomposition and sub-convolution method,the proposed structure possesses lower computational complexity,which is beneficial to the real-time realization of FSE-CMA.Computer simulations were presented to illustrate the efficiency of the new FSE-CMA equalizer.