摘要
为了降低无线激光通信用户访问时间,加强信道的利用率,提出多径干扰下无线激光通信接收端信道并行均衡方法。首先进行无线激光通信信号滤波预处理,通过滤波器对信号降噪,保证信号的质量,同时对其进行归一化处理,方便信道的均衡化处理。其次估计出多径干扰下的通信信道,在信道估计结果的基础上添加并行概念,获得信道均衡化处理结果,实现无线激光通信接收端信道并行均衡。试验结果表明,所提方法的抗干扰性较强,信道均衡性能较好,信道的估计速度较快,平均信道估计速度为1.96 m/s。
In order to reduce the access time of wireless laser communication users and enhance the utilization rate of channels, a parallel channel equalization method at the receiving end of wireless laser communication under multipath interference is proposed. Firstly, the preprocessing of wireless laser communication signal filtering is performed, and the signal is denoised by the filter to ensure the quality of the signal, and at the same time, it is normalized to facilitate the equalization of the channel. Secondly, the communication channel under multipath interference is estimated, and the parallel concept is added on the basis of the channel estimation result to obtain the channel equalization processing result, and realize the parallel equalization of the wireless laser communication receiving end channel. The experimental results show that the proposed method has strong anti-interference performance, better channel equalization performance, and faster channel estimation speed, with an average channel estimation speed of 1.96 m/s.
作者
张华
瞿绍军
杨丞
Zhang Hua;Qu Shaojun;Yang Cheng(Guangzhou Railway Polytechnic,Guangzhou,Guangdong 510430,China;College of Information Science and Engineering,Hunan Normal University,Changsha,Hunan 410012,China;School of Electronic Information and Electrical Engineering,Changsha University,Changsha,Hunan 410022,China)
出处
《应用激光》
CSCD
北大核心
2022年第9期105-110,共6页
Applied Laser
基金
湖南省教育厅科学研究项目(19C1149)
湖南省先进激光技术实验室基金(20193202)。
关键词
多径干扰
预处理
信道估计
信道均衡
激光通信
multipath interference
preprocessing
channel estimation
channel equalization
laser communication
