半导体光电, 2011, 32 (2): 262, 网络出版: 2012-01-04
基于RS码的多脉冲位置调制系统的研究
Research on Multipulse Position Modulation System Based on RS
大气激光通信 多脉冲位置调制 最大似然检测 atmosphere laser communication multipulse position modulation reedsolomon RS maximumlikelihood detection
摘要
为了改善雨、雾、雪等环境因素对大气激光通信系统性能的影响,建立了一种新的多脉冲位置调制(MPPM)系统。在新系统中不但加入了RS编译码器,而且对接收到的信号采用了最大似然检测技术。分析了信噪比、保护时隙持续时间、信息时隙宽度等性能参数。仿真结果表明,适当地选择参数,可以最大程度减少环境因素对大气激光通信的影响,提高大气激光通信系统的性能。
Abstract
A new MultiPulse Position Modulation(MPPM) system is established to decrease the effect of such weather as rain, fog or snow on the performance of atmosphere laser communication system. ReedSolomon(RS) encoder/decoder and maximumlikelihood detection are used in the new system. Signal noise ratio, protective time slot and information time slot are analyzed. The simulation results show that the performance of atmosphere laser communication system can be improved when proper parameters are selected.
秦岭, 杜永兴. 基于RS码的多脉冲位置调制系统的研究[J]. 半导体光电, 2011, 32(2): 262. QIN Ling, DU Yongxing. Research on Multipulse Position Modulation System Based on RS[J]. Semiconductor Optoelectronics, 2011, 32(2): 262.