大气激光通信中三脉冲的MPPM编译码系统的实现  

Implementation of Coding and Decoding System for Three-pulse MPPM in Atmosphere Laser Communication

作　　者：秦岭[1] 杜永兴[1] 柯熙政[2] 杨立东[1] 

机构地区：[1]内蒙古科技大学信息工程学院,内蒙古包头014010 [2]西安理工大学自动化与信息工程学院,陕西西安710048

出　　处：《半导体光电》2008年第3期403-406,433,共5页Semiconductor Optoelectronics

基　　金：陕西省教育厅科技专项基金项目

摘　　要：为了解决大气激光通信中单脉冲位置调制(PPM)的传输带宽扩张的问题,分析了多脉冲位置调制(MPPM)的传信能力、传输效率、带宽利用率等性能参数。发现三脉冲的MPPM在传信能力、带宽利用率较PPM和二脉冲的MPPM有很大优势。设计并实现了一种新的编译码系统,即三脉冲的MPPM编译码系统。实验结果表明,用FPGA实现的三脉冲的MPPM编译码系统能够正确地完成输入二进制信息的编译码。Parameters of multi-pulse pulse position modulation （MPPM） were analyzed to resolve extension transmission bandwidth for pulse position modulation （PPM） in atmosphere laser communication. These parameters include capacity of information transmission, transmission efficiency, bandwidth efficiency, etc. It is found that three-pulse PPM offers better capacity of information transmission, bandwidth efficiency as compared to PPM and dual-pulse PPM. Therefore, a new coding and decoding system was designed for the first time, namely coding and decoding system of three-pulse PPM. The experimental results show that coding and decoding system of three-pulse PPM with FPGA can accurately accomplish coding and decoding of input binary bit.

关 键 词：大气激光通信 多脉冲位置调制 三脉冲 编译码 FPGA 

分 类 号：TN914.2[电子电信—通信与信息系统]