基于CDD技术的无人艇通信链路研究  

Design of cyclic delay diversity communication link for unmanned surface vehicle

作　　者：王玥[1] 杨峰[1] 丁良辉[1] WANG Yue;YANG Feng;DING Liang-hui(School of Electronic Information and Electrical Engineering,Shanghai Jiaotong University,Shanghai 200030,China)

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200030

出　　处：《信息技术》2021年第6期16-21,共6页Information Technology

基　　金：国家自然科学基金(61771309)。

摘　　要：文中研究了无人艇海上通信的特点,针对海面信道易出现频域选择性衰落、无人艇平台摇摆剧烈信道质量随时间快速变化这两点,将双天线分集收发技术引入无人艇通信链路中,提出了一种基于最大比合并和循环延迟分集(Cyclic Delay Diversity,CDD)的无人艇通信链路收发技术,该技术实现简单、使用灵活,有助于实现高效率、高可靠性、抗干扰的无人艇通信。通过搭建硬件系统和海面模拟测试环境,验证了双天线收发可以为无人艇通信链路带来3-6dB的增益。This paper analyzes the characteristics of Maritime Communications for Unmanned Surface Vehicle(USV).In order to overcome the frequency-selective fading and time-varying uncertainty in the maritime channel,a dual-antenna technology is proposed based on cyclic delay diversity(CDD)and maximal ratio combining(MRC).Our design brings many advantages for USV Communication including easy and flexible implementation,high spectral efficiency and robustness against interference.A hardware platform is done to verify the improvement of our dual-antenna system which could bring 3-6dB gains under the maritime simulation environment.

关 键 词：双天线 最大比合并 CDD 无人艇 海上通信 

分 类 号：TN92[电子电信—通信与信息系统]