摘要
现有的光通信编码方案仅在加权高斯白噪声信道等单信道条件下进行性能分析,未构建多信道模型,导致性能分析结果与实际的编码方案性能误差较大,因此,研究多信道条件下的光通信编码方案性能分析方案。首先建立光通信编码多信道模型,分析基带信息的处理过程,计算光源辐射角的辐射强度得到信道传输的共有模式,在编码长度类型不同的情况下,计算距离谱,引入IOWEF函数与联合解,引入信道的非对称系数,修正信道非对称情况,通过码长的近似程度完成性能的比较与分析。在仿真实验中,在编码方案仿真参数与编码方案相同的情况下,将设计的性能分析方法与其他三种单信道分析方法进行比较,得到的实验结果表明,设计方法在不同信噪比下的误码率与理论值基本一致,偏差在0.2%以内,在序列长度为110 dB时,多信道编码方法的误块率为10^(-2),优于对比方法,由此验证了设计方法的有效性。
The existing optical communication coding schemes only conduct performance analysis under single channel conditions, such as weighted Gaussian white noise channel, and do not build a multi-channel model, which leads to a large error between the performance analysis results and the actual coding schemes. Therefore, the performance analysis scheme of optical communication coding schemes under multi-channel conditions is studied. Firstly, the visible light communication coding multi channel model is established to analyze the baseband information processing, and calculate the radiation strength of light radiation angle to obtain the common channel transmission model. Under the conditions of different length coding type, the distance spectrum is computed. The IOWEF function and joint solution, and the asymmetric channel coefficient are introduced to fix channel asymmetric situation and complete the comparison and analysis of performance through the yard approximate degree. In the simulation experiment, when the simulation parameters of the coding scheme are the same as those of the coding scheme, the performance analysis method is compared with the other three single channel analysis methods. The experimental results show that the BER of the design method is consistent with the theoretical value under different SNR, and the deviation is within 0.2%. When the sequence length is 110 dB, the error block rate of the multi-channel coding method is 10^(-2), which is better than the comparison method, which verifies the effectiveness of the design method.
作者
许癸驹
钱雅楠
代红英
徐琴
XU Guiju;QIAN Yanan;DAI Hongying;XU Qin(Chongqing Institute of Engineering,Chongqing 400056,China;Chongqing College of Mobile Communication,Chongqing 401520,China)
出处
《激光杂志》
CAS
北大核心
2022年第4期144-147,共4页
Laser Journal
基金
重庆市教委科技项目(No.KJZD-K201902401)。
关键词
多信道条件
光通信
编码方案
性能分析
multi-channel condition
visible light communication
coding scheme
performance analysis
