空间光通信PPM信号的软解调及其性能

被引:2
作者
张江鑫
胡宏飞
机构
[1] 浙江省光纤通信技术重点研究实验室浙江工业大学信息学院
[2] 浙江省光纤通信技术重点研究实验室浙江工业大学信息学院 浙江 杭州
[3] 浙江 杭州
关键词
脉冲位置调制; 软解调; 误码率;
D O I
暂无
中图分类号
TN911.3 [调制理论];
学科分类号
081002 ;
摘要
PPM调制由于其较高的功率利用率而在空间光通信系统中得到了广泛的应用,PPM信号的接收部分对整个通信系统的性能起很大作用。我们对光PPM信号的解调进行分析,提出了PPM信号的软解调而不对脉冲位置作先期判决,并对软解调及其性能进行分析,最后利用计算机对用APD接收且存在热噪声下的空间光通信PPM信号的解调进行了模拟仿真。仿真结果说明软解调由于充分利用了光电探测器计数软信息而降低了误码率。
引用
收藏
页码:42 / 46
页数:5
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