带内全双工水声通信系统自干扰抵消技术研究框架与思路  

Research Framework and Idea of Self-Interference Cancellation Technology for In-Band Full-Duplex Underwater Acoustic Communication System

作　　者：赵云江 ZHAO Yunjiang(No.710 R&D Institute,CSSC,Yichang 443003,China)

机构地区：[1]中国船舶集团有限公司第七一〇研究所,湖北宜昌443003

出　　处：《移动通信》2022年第6期105-110,共6页Mobile Communications

基　　金：黑龙江省自然科学基金(LH2021F010)。

摘　　要：水声通信技术已经被广泛应用于水下信息交互、海洋环境监测数据回传等方面,但受限于半双工体制,频率效率难以获得突破性的提升。首先对目前IBFD-UWAC技术研究现状进行了简述;然后重点阐述并分析了自干扰信道估计过程中遇到的问题与信道特征,并以真正实现IBFD-UWAC为目标,结合外场实测自干扰信号与信道估计结果,对IBFD-UWAC系统中自干扰抵消结构与自适应滤波器性能要求进行了总结;最后基于现有研究基础与实验结果,提出了具有一定实用性的IBFD水声通信系统自干扰抵消理论研究框架以及思路。Underwater acoustic communication(UWAC) technology has been widely used in underwater information interaction, marine environment monitoring data backhaul, etc., however, limited by the half-duplex system, it is difficult to achieve a breakthrough in frequency efficiency. Firstly, this paper briefly describes the current research status of IBFD-UWAC technology. Secondly, the problems encountered in the process of self-interference channel estimation and channel characteristics are emphatically described and analyzed. Taking the real realization of IBFD-UWAC as the goal, combined with the field measured self-interference signal and channel estimation results, the self-interference cancellation(SIC) structure and the performance requirements of adaptive filter in IBFD-UWAC system are summarized. Finally, based on the existing research foundation and experimental results, the practical theoretical research framework and idea of SIC for IBFD-UWAC system are proposed.

关 键 词：带内全双工 水声通信 自干扰抵消 干扰信道估计 

分 类 号：TN929.3[电子电信—通信与信息系统]