Abstract:A basic model is established for mixtures of two co-frequency modulated signals with error-control codes, then an M-PSP based algorithm is proposed to exploit the error-control codes in its single-channel blind separation, with special emphasis on the construction of state trellis, the evaluation of branch metric and the tracking of channel responses. Simulation results show that the proposed algorithm is superior to the algorithms which bypass the error-control codes. For BPSK signals with rate-1/2 convolutional codes, a gain of about 2 dB in signal-noise ratio can be obtained at a bit error rate of 10-4.