关键词: 常数模判决反馈均衡器, 正交多小波变换, 收敛速度

Abstract: Aiming at the slow convergence rate of Constant Modulus Algorithm Decision Feedback blind Equalizer（CMA-DFE），a New balance orthogonal Multi-Wavelet Transform based on Constant Modulus Algorithm Decision Feedback blind Equalizer（New-MWT-CMA-DFE） is proposed on the basis of analyzing on common balance orthogonal Multi-Wavelet Transform based on Constant Modulus Algorithm Decision Feedback blind Equalizer（MWT-CMA-DFE）.In the proposed equalizer，the balance orthogonal multi-wavelet transform is introduced into CMA-DFE and the convergence rate of the proposed equalizer is improved by normalizing orthogonal multi-wavelet transform for the output signal of the decision device.Simulation tests have indicated：for the frequency response smooth channel，the NEW- MWT-CM A-DFE has not only the faster convergence rates but also smaller residua error compared with those of CMA-DFE and MWT-CMA-DFE;for the frequency response waved channel，the performance of the NEW-MWT-CMA-DFE is consistent with the MWT-CMA-DFE and is superior to the CMA-DFE in convergence rates and residua error.

Key words: constant modulus algorithm decision feedback blind equalizer, balance orthogonal multi-wavelet transform, convergence rate