摘要
随着多种无人系统在军事领域的公开和推广,无人平台所需的信息传输带宽(速率)和可靠性要求日益增长,传统的窄带载波通信面对实时图像视频的无线传送已经无法满足用户需求, COFDM技术的出现和应用有效解决了图像视频无线传送的实时性和动态性。本文首先介绍了OFDM技术的基本原理,引出了COFDM出现的必然性,然后简要说明了某无人作战系统中图像视频远距离传输的设计方案,验证了COFDM技术在有效降低误码率、克服码间干扰等方面比传统单载波通信更加适合于无人系统。
With the openness and popularization of .various unmanned systems in the military field, the bandwidth (rate)and reliability for unmanned platform wireless transmission are increasing.The traditional narrow -band carrier communication for real -time video wireless transmission cannot meet the needs of the users.The appearance and application of COFDM technology effectively solves the real -time and dynamic characteristics for the wireless transmission of video and image.In this paper,firstly introduces the basic principle of OFDM technology,next introduces the inevitability of COFDM,then briefly describes the design of long -distance video and image transmission in one unmanned system,verifies that the COFDM technology is effectively in reducing the bit error rate, interference and other aspects and is more suitable for unmanned systems than traditional single - carrier communication.
作者
郝国欣
李柬
耿红岩
HAOGuo-xin;LI Jian;GENG Hong-yan(No.22 Research Institute of CETC,Qingdao 266107,China;Tianjin Optical Electrical Group Co.,Ltd.,Tianjin 300202,China)
出处
《无线通信技术》
2018年第4期36-39,45,共5页
Wireless Communication Technology
关键词
无人
COFDM
图像视频
标清
高清
unmanned
COFDM
image and video
standard definition
high definition
