A full-duplex technology based on the Doppler effect

IF 2.9 3区计算机科学 Q2 COMPUTER SCIENCE, INFORMATION SYSTEMS

Journal of Communications and Networks Pub Date : 2024-08-01 DOI:10.23919/JCN.2024.000038

Hao Feng;Meng Ma;Yuping Zhao

引用次数: 0

Abstract

Full-duplex technology can improve bandwidth and energy efficiency but has serious self-interference. In this paper, we introduce a novel full-duplex communication scheme that leverages the Doppler effect. By rotating the circular antenna array, the Doppler frequency shift is introduced into the received uplink (UL) signal, and the UL signal can be separated from the downlink (DL) signal in the frequency domain, thus eliminating self-interference. In order to maximize the interference-free bandwidth, an antenna switching criterion to maximum frequency offset interval is proposed for antenna switching control. Moreover, an antenna switching module based on the above criterion and a Doppler frequency shift compensation module are designed. Simulation results show that the proposed scheme can effectively avoid interference between UL and DL signals and achieves a substantial capacity improvement compared to conventional systems.

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基于多普勒效应的全双工技术

全双工技术可以提高带宽和能效，但存在严重的自干扰问题。本文介绍了一种利用多普勒效应的新型全双工通信方案。通过旋转圆形天线阵列，在接收到的上行链路（UL）信号中引入多普勒频移，UL 信号与下行链路（DL）信号就能在频域上分离，从而消除自干扰。为了最大限度地提高抗干扰带宽，提出了天线切换控制的最大频率偏移间隔准则。此外，还设计了基于上述准则的天线切换模块和多普勒频移补偿模块。仿真结果表明，与传统系统相比，所提出的方案能有效避免 UL 和 DL 信号之间的干扰，并大幅提高了容量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Communications and Networks 工程技术-电信学

CiteScore

6.60

自引率

5.60%

发文量

审稿时长

14.4 months

期刊介绍： The JOURNAL OF COMMUNICATIONS AND NETWORKS is published six times per year, and is committed to publishing high-quality papers that advance the state-of-the-art and practical applications of communications and information networks. Theoretical research contributions presenting new techniques, concepts, or analyses, applied contributions reporting on experiences and experiments, and tutorial expositions of permanent reference value are welcome. The subjects covered by this journal include all topics in communication theory and techniques, communication systems, and information networks. COMMUNICATION THEORY AND SYSTEMS WIRELESS COMMUNICATIONS NETWORKS AND SERVICES.