BICM-ID卫星系统的DFE均衡及其改进  

DFE equalization and its improvements in BICM-ID satellite system

作　　者：崔鹏辉[1] 杨育红[1] 曾祥峰[1] 吕静 

机构地区：[1]信息工程大学信息工程学院 [2]61416部队

出　　处：《电路与系统学报》2013年第1期38-41,共4页Journal of Circuits and Systems

摘　　要：APSK信号对卫星转发器的非线性极其敏感,解译之前需要进行均衡补偿。传统接收机中的均衡、解调和译码过程是相互独立的,本文将DFE均衡应用到BICM-ID卫星系统中,并对其进行改进,实现了均衡和解译的联合处理,从而获得更好的性能。仿真结果验证了算法的有效性,而且相比传统接收,信噪比改善了1.5dB。APSK is very sensitive with the nonlinearity of satellite transponder,which needs equalization before demodulation and decoding.Conventional receivers execute equalization,demodulation and decoding independently.This paper applies DFE equalization to BICM-ID satellite system and proposes some improvements,which combine equalization,demodulation and decoding,and as a result get better performance.Simulation results show that the algorithm are effective and the Eb/N0improves 1.5dB.

关 键 词：BICM—ID APSK DFE均衡 非线性 

分 类 号：TN927[电子电信—通信与信息系统]