自由空间光通信中一种低复杂度的极化码构造方法  

Low-complexity polarization code construction method in free space optical communication

作　　者：孙晖[1] 何晓垒[1] SUN Hui;HE Xiaolei(The 34th Research Institute of CETC,Guilin Guangxi 541004,China)

机构地区：[1]中国电子科技集团公司第三十四研究所,广西桂林541004

出　　处：《光通信技术》2021年第8期14-17,共4页Optical Communication Technology

摘　　要：针对目前在大气湍流信道中没有合适的极化码构造方法的问题,基于自由空间光通信系统,提出将高斯偏序应用于大气湍流信道的极化码序列构造中。描述了高斯偏序方法构造极化码的方法,在Matlab中使用蒙特卡洛仿真分析了σ_(0)^(2)=0.2的湍流信道下32条子信道的误码率情况和不同湍流强度下传输错误概率情况,并与高斯偏序方法构造的极化码序列进行对比。仿真结果表明:弱湍流信道下各子信道可靠性排序与使用高斯偏序方法构造的极化码序列基本一致,证明了自由空间光通信在弱湍流信道中可使用高斯偏序方法构造极化码序列。Aiming at the problem that there is no suitable construction method of the polarization code for atmospheric turbulence channels at present.Based on the wireless optical communication system,this paper proposes to apply Gaussian partial order to the construction of polar code sequences in atmospheric turbulent channels.The method of constructing polarization codes by Gaussian partial order algorithm is described in this paper.Monte Carlo simulation is used in Matlab to analyze the error rate of 32 sub-channels under σ_(0)^(2)=0.2 turbulent channel and the transmission error probability under different turbulence intensity,and constructed with Gaussian partial order method.The simulation results show that the reliability order of the sub-channels in the weak turbulence channel is basically the same as the polarization code sequence constructed using the Gaussian partial order method,which proves that free space optical communication can use Gaussian partial order method to construct the polarization code sequence in the weak turbulence channel.

关 键 词：自由空间光通信 极化码 序列构造 高斯偏序 可靠性 

分 类 号：TN914[电子电信—通信与信息系统]