快速时变信道下GMSK系统自适应均衡技术研究及FPGA实现  

Research and FPGA Implementation of Channel Equalization Algorithm Based on GMSK Modulation Signal

作　　者：朱岩[1] 

机构地区：[1]中国空空导弹研究院第10研究所,河南洛阳471009

出　　处：《电子质量》2016年第5期14-21,共8页Electronics Quality

摘　　要：在快速时变信道环境下,无线信号的传输会发生非常严重的时延、衰减和畸变,即所谓小尺度信道衰落。该文设计了一种简单易于在FPGA平台上实现的GMSK收发系统模块,基于该系统模型,提出并推导了两种自适应均衡算法:频域LMS算法、RLS算法。通过MATLAB仿真对比了两种均衡算法的收敛特性及运算复杂度,提出适用于快速时变信道的流水线并行RLS自适应均衡算法,并在FPGA开发平台上量化实现了RLS自适应均衡模块。Under the fast varying channel environment,the transmission of the wireless signal will suffer very serious delay,attenuation and distortion which is called small-scale fading.This paper presents a simple and easy implement GMSK transceiver system module on the FPGA platform,based on this system module,we proposed and derived two adaptive equalization algorithms：frequency domain LMS algorithm,RLS algorithm. Simulation comparison on of the convergence properties and the computational complexity of Two Equilibrium algorithm by MATLAB,we obtained the pipeline parallel RLS adaptive equalization algorithm for fast varying channel environment,and designed a quantized RLS adaptive equalizer module on the FPGA development platform.

关 键 词：GMSK 小尺度衰落信道 频域LMS算法 RLS算法 FPGA 

分 类 号：TN915.05[电子电信—通信与信息系统] TN791[电子电信—信息与通信工程]