基于分数间隔的双模式盲均衡算法研究  

Study on Dual-mode Blind Equalization Algorithm Based on Fractionally Spaced Equalizer

作　　者：戴诚[1] 梁诗晨 肖静薇[1] 毕国银 白桦 DAI Cheng LIANG Shichen XIAO Jingwei BI Guoyin BAI Hua(State Grid Chongqing Information ＆ Telecommunication Company, Chongqing 400014, China State Grid Chongqing Changchou Power Supply Company, Chongqing 401220, China Chongqing AEA Group Software Co.Ltd, Chongqing 400014,China)

机构地区：[1]国网重庆市电力公司信息通信分公司,重庆400014 [2]国网重庆市电力公司长寿供电分公司,重庆401220 [3]重庆亚东亚集团软件有限公司,重庆400014

出　　处：《无线电通信技术》2016年第6期59-62,共4页Radio Communications Technology

摘　　要：针对MMMA存在的收敛速度慢的问题,提出一种改进算法。此算法将MCMA和改进型MMMA结合起来,并且应用于分数间隔均衡器中。该算法初期采用MCMA收敛均衡,根据判决区域切换到改进型MMMA中进一步收敛,由于分数间隔均衡器解决了波特间隔均衡器因抽样率不高带来的频谱混叠问题,从而进一步地提高了均衡效果。仿真结果表明,改进算法收敛速度快,剩余误差小而且能克服相位偏移。According to the deficiency due to slow convergence in MMMA, an improved algorithm which combines MCMA and modified MMMA in the FSE is proposed.The algorithm firstly adjusts the coefficients of equalizer by MCMA and then switches to modi-fied MMMA according to decision circle area. And the FSE solves the spectrum aliasing problem, caused by baud spaced equalizer because the sampling rate is not high, thus the performance of equalizer is further improved. Simulation results show that the new algorithm has fast convergence,small residual error and can overcome the phase offset.

关 键 词：盲均衡 多模算法 双模式 分数间隔 

分 类 号：TN391.9[电子电信—物理电子学]