| 大气湍流光PPM通信系统中LDPC码的置信传播译码 |
| |
| 引用本文： | 陈佳杰,李晓峰. 大气湍流光PPM通信系统中LDPC码的置信传播译码[J]. 光子学报, 2009, 38(2): 405-409 |
| |
| 作者姓名： | 陈佳杰 李晓峰 |
| |
| 作者单位： | 电子科技大学,物理电子学院,成都,610054;电子科技大学,物理电子学院,成都,610054 |
| |
| 基金项目： | Supported by National High-Technology Projects(2002AA107496) |
| |
| 摘 要： | 对大气弱湍流光PPM通信系统中LDPC码的BP 解码算法进行了研究,提出了相应系统模型下的解码算法.通过理论分析和大量计算机仿真,结果表明:采用LDPC的大气弱湍流光PPM通信系统比未编码的大气弱湍流光PPM通信系统的性能好,但是系统的BER性能随着PPM的时隙数的增加而增大.
|
| 关 键 词： | 大气湍流光通信 置信传播 脉冲位置调制 低密度校验码 对数正态 |
| 收稿时间： | 2007-09-13 |
| 修稿时间： | 2008-01-17 |
Belief Propagation Decoding of Low-density Parity-check Codes for Atmospheric Turbulent Optical PPM Communication Systems |
| |
| CHEN Jia-jie,LI Xiao-feng. Belief Propagation Decoding of Low-density Parity-check Codes for Atmospheric Turbulent Optical PPM Communication Systems[J]. Acta Photonica Sinica, 2009, 38(2): 405-409 |
| |
| Authors: | CHEN Jia-jie LI Xiao-feng |
| |
| Affiliation: | School of Physical Electronics;University of Electronic Science and Technology of China;Chengdu 610054;China |
| |
| Abstract: | BP decoding of LDPC code for weak atmospheric turbulent optical PPM systems was studied, and corresponding decoding algorithm was introduced according to the system model. Through theoretical analysis and extensive computer simulations, the result shows that the LDPC coded weak atmospheric turbulent optical PPM system has better BER than the uncoded weak atmospheric turbulent optical PPM system, but the BER performance of the system increases with the increase of slot. |
| |
| Keywords: | Atmospheric turbulence optical communication Belief Propagation(BP) Pulse Position Modulation (PPM) Low-Density Parity-Check (LDPC) Code Lognormal |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《光子学报》浏览原始摘要信息 |
|
点击此处可从《光子学报》下载全文 |
