摘要
针对自由空间光通信(FSO)链路易受大气湍流影响的问题,提出了将极化码(Polar Codes)应用于FSO的方案,并结合一种改进型校验码辅助极化码在FSO中译码。仿真表明:与传统的循环冗余校验码辅助极化码译码方案相比,在误块率为10-6时,改进方法有0.2d B左右的编码增益,在低信噪比下性能更好。
In view of the issue that freespace optical communication（FSO） links are susceptible to atmospheric turbulence, a scheme for applying polar codes to FSO is proposed, combined with an improved check code as- sisted polar code decoding in FSO. Compared with the traditional CRC-assisted polar code decoding scheme, Simulations show that the improved method has a coding gain of about 0.2dB when the block error rate is 10-6, and the performance is even bettre at a low SNR.
作者
张兢
李小红
曹阳
彭小峰
张晗
ZHANG Jing;LI Xiaohong;CAO Yang;PENG Xiaofeng;ZHANG Han(School of Electrical and Electronic Engineering,Chongqing University of Technology,Chongqing 400054,China)
出处
《光通信技术》
北大核心
2018年第10期52-55,共4页
Optical Communication Technology
基金
中国博士后科学基金(2014M552329)资助
重庆市教委科学技术项目(KJ1500934)资助
重庆市科委社会事业与民生保障科技创新专项(cstc2017shms A40019)资助
关键词
自由空间光通信
大气弱湍流
极化码
奇偶校验码
循环冗余校验码
freespace optical communication （FSO）
weak turbulence
polar codes
parity check code
cyclicredundancy check code
