基于COFDM的单兵视频通信系统研究  

Research of the Individual-Soldier Video Communication System Based on COFDM

作　　者：李劲松 林聪仁[2] 孙海信[2] 许静萱 周明章 

机构地区：[1]深圳市朗石科学仪器有限公司,广东 深圳 [2]厦门大学,信息科学与技术学院,福建 厦门

出　　处：《无线通信》2019年第2期71-77,共7页Hans Journal of Wireless Communications

基　　金：深圳市科技计划项资助,项目号(JSGG20170414090428464);国家自然科学基金(61671394)。

摘　　要：步入21世纪,单兵通信系统正朝着便携化、视频化、集成化方向发展,并广泛应用于武警、消防等方面。针对在复杂场景下,存在多径效应、环境噪声等影响因素,本文探究并设计了基于编码正交频分复用(Coded Orthogonal Frequency Division Multiplexing, OFDM)和高效视频编码(High Efficiency Video Coding, H.265/HEVC)技术的单兵视频通信系统。系统用H.265对视频图像进行压缩,经过RS编码、卷积交织、卷积编码和块交织,将数据流进行4QAM调制,经由接收端解调和解码,完成视频通信。结果表明,该通信方案可以降低数据误码率,并大幅度提升视频传输效率。Stepping in 21st century, the Individual-Soldier Video Communication System has been developing with small size, video viewing, integration and ultra-wide band. The system has been widely used in command of police investigation, emergency and rescuing. Considering that there exist the multipath effect and environmental noise, the COFDM technology and H.265/HEVC technology are explored, and an efficient and reliable single-soldier video communication system is designed. The system uses H.265 to encode the video image. After RS encoding, convolution interleaving, convolution encoding and block interleaving, the data stream is modulated with 4QAM, and video communication is completed through demodulation and decoding of the receiving end. The simulation result indicated that this system could both improve the transmitting efficiency and reduce the error rate.

关 键 词：单兵设备 视频通信 COFDM H.265/HEVC 

分 类 号：TN91[电子电信—通信与信息系统]