Adapting Constant Modulus Algorithm for Phase Modulation Signals

A novel blind constant modulus algorithm (CMA) for phase modulation signals is proposed. Compared with the CMAs before, this method, which exploits the relative phase information concealed in the M-PSK signals, has the ability to detect the types of modulation without the training information. Furthermore, this idea can apply to the continuous-varying modulation scheme systems. With the detected modulation scheme, the received signals can be recovered correctly. Simulation results prove the superiority of this new method.