信道时变性对无线激光通信系统的性能影响研究  

Study on influence of channel time-varying on performance of wireless laser communication system

作　　者：邓国辉[1] DENG Guohui(Zhengzhou University of Science and Technology,School of Information Engineering,Zhengzhou 450064,China)

机构地区：[1]郑州科技学院信息工程学院,郑州450064

出　　处：《激光杂志》2022年第4期140-143,共4页Laser Journal

基　　金：国家自然科学基金资助项目(No.61462064);高等学校重点科研项目(No.16B510006)。

摘　　要：信道时变性对无线激光通信系统性能具有强干扰影响,因此,提出基于信道时变均衡控制的无线激光通信系统性能优化方法。构建无线激光通信系统的时变信道模型提取信道时变性特征,以此建立无线激光通信系统传输的输出信道衰落特征估计模型进行抗干扰抑制,分析信道时变性对无线激光通信系统相关指标参数的影响,通过Matlab仿真分析进行性能测试。测试结果表明,信道时变性对无线激光通信系统的性能参数影响能通过抑制信道码间干扰的方法降到最低,通过优化的激光通信系统设计,提高了信道的均衡性和抗干扰性,平均准确率为0.932 2%。Channel time-varying has a strong interference effect on performance of wireless laser communication system, so a performance optimization method based on channel time-varying equalization control is proposed. The time-varying channel model of wireless laser communication system is constructed to extract channel time-varying characteristics, and output channel fading characteristic estimation model of wireless laser communication system is established to suppress the anti-interference. The influence of channel time-varying on relevant index parameters of wireless laser communication system is analyzed, and performance test is carried out through MATLAB simulation analysis. The test results show that the influence of channel time-varying on performance parameters of wireless laser communication system can be minimized by suppressing channel inter symbol interference. Through optimized laser communication system design, the equalization and anti-interference of the channel are improved, and the average accuracy rate is 0.932 2%.

关 键 词：信道 时变性 无线激光通信 信噪比 

分 类 号：TN919[电子电信—通信与信息系统]