OFDM-TDM在快衰落环境下的双模式MCMA算法研究  

OFDM-TDM research of dual mode MCMA algorithm in fast fading environment

作　　者：旷岳衡[1] 

机构地区：[1]重庆邮电大学,重庆400065

出　　处：《数字通信》2013年第2期33-35,共3页Digital Communications and Networks

摘　　要：对OFDM-TDM快衰落下的盲均衡算法做了研究,结合插值算法及DD-LMS和MCMA算法,并将其应用到盲判决反馈均衡器进行抽头更新,在频率选择性衰落下得到一种均衡性能更优的插值DD-LMS+MCMBDFE算法。该算法在均衡的同时不仅能自动补偿相位误差,还能有效补偿多普勒频偏误差,收敛后剩余误差更小。仿真结果表明插值DD-LMS+MCMBDFE算法是一种有效的盲判决反馈均衡算法。The research is done of OFDM-TDM blind equalization algorithm in fast fading environment. Interpolation and DD-LMS and MCMA algorithm is introduced, which is also applied in blind decision feedback equalizer＇s tap update. Then a more applicable frequency selective fading environment and better performance DD-LMS＋MCMBDFE algorithm is obtained. This algorithm has better balance and can automatically compensate phase error and doppler frequency offset error, with faster convergence speed and smaller residual error after convergence. The simulation results show that the interpolation DD-LMS＋MCMBDFE algorithm is an effective blind decision feedback equalization algorithm.

关 键 词：MCMA 插值算法 DD-LMS 快衰落环境 

分 类 号：TN919.3[电子电信—通信与信息系统]