Abstract
Convergence rate and steady-state mean square error are the main parameters to evaluate the performance of blind equalization algorithm. In order to improve the blind equalization performance of non-cooperative communication reception under multipath fading channel, a modified super-exponential iterative blind equalization algorithm is adopted, which converges faster than the traditional constant modulus algorithm and achieves the same steady-state mean square error. Aiming at the MPSK non-cooperative signal with unknown modulation order, a two-mode blind equalization method based on fractional interval is proposed. The method makes full use of the robustness and fast convergence of the super-exponential iterative algorithm, and combines the low steady-state mean square error of the recursive least squares algorithm. The effectiveness of the method is proved by simulation and experiment.
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