一种适用于PCM-FM信号的分数间隔盲均衡算法  

A Blind Equalization Algorithm Based on Fractionally Spaced Sampling for PCM-FM

作　　者：陈静[1] 曾海彬[2] 徐秀成[3] 孟玮[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所 [2]北京跟踪与通信技术研究所 [3]中国人民解放军63778部队

出　　处：《无线电工程》2016年第9期48-50,共3页Radio Engineering

摘　　要：针对遥测系统中频率选择性衰落造成的严重码间干扰问题,提出了一种适用于PCM-FM信号的分数间隔盲均衡算法。该算法利用PCM-FM信号的恒模特性,采用过采样技术提高了收敛速度,并对宽带遥测两径信道模型进行了均衡仿真。仿真结果表明,该方法能够较好地对抗频率选择性多径衰落,消除码间干扰。To overcome the inter-symbol interference caused by the frequency-selective fading in the telemetry system,a blind equalization algorithm based on fractionally spaced sampling for PCM-FM is proposed in this paper.According to the constant modulus of PCM-FM,the proposed algorithm uses the over-sampling technology to increase the convergence rate.The algorithm is simulated on the wideband channel model for aeronautical telemetry.Simulation results show that the proposed algorithm can effectively equalize the ISI caused by the frequency-selective fading.

关 键 词：恒模算法 盲均衡 分数间隔 多径衰落 码间干扰 

分 类 号：TN911[电子电信—通信与信息系统]