正交多小波变换常模判决反馈盲均衡器

针对常模判决反馈均衡器收敛慢的缺点，在对常规的基于平衡正交多小波变换的常模判决反馈盲均衡器（MWT-CMA-DFE）进行分析的基础上，设计了一种新的基于平衡正交多小波变换的判决反馈盲均衡器（NEW-MWT-CMA-DFE）。该均衡器通过对判决器的输出信号进行归一化正交多小波变换来加快收敛。仿真结果表明：对信道频率响应变化比较平滑的信道，与CMA-DFE和MWT-CMA-DFE相比，NEW-MWT-CMA-DFE的收敛快且稳态误差小;对信道频率响应起伏大的信道，NEW-MWT-CMA-DFE和MWT-CMA-DFE性能基本一致，而比CMA-DFE收敛快且稳态误差小。

Orthogonal multi-wavelet transform constant modulus decision feedback blind equalizer

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 Equalize（rMWT-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.