CMA Based Blind Equalization for GFDM Systems

Blind channel equalization for GFDM systems based on a constant modulus algorithm (CMA) is proposed in this paper. The system implements CMA together with a discrete Fourier transform (DFT) that enables the realization of blind equalizer which is comparable to pilot based system. Two performance parameters are used to evaluate the equalizer, first is the symbol error rate (SER) and second is the mean squared error (MSE). The obtained results from simulation show that the performance of the proposed system is better than that of pilot-based system. The result also indicates that its performance closely matches to the ideal estimation and equalization of the channel.