Full-Duplex Communications: Antenna Story

D. Filipović, M. Elmansouri, L. Bosković
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引用次数: 1

Abstract

Simultaneous transmit and receive (STAR), also known as in-band full-duplex (IBFD), is a key enabling technology for the next-generation wireless networks operating in spectrum congested and contested environments. Transmitting (Tx) and receiving (Rx) at the same time and over the same frequency channel results in significant improvements in communication systems throughput and spectral efficiency. The chief challenge associated with STAR systems is the required high Tx/Rx isolation that may be obtained with transceivers that combine multiple layers of self-interference (SI) cancellation including digital back-end processing. Since transceivers "start and end" with apertures, the antenna layer is therefore critically important for STAR operation. Nowadays, ~40-50% of the required isolation can be achieved with a well-designed IBFD antenna subsystem inching us ever closer to meeting this, not so long ago considered impossible task. This review focuses on the role of antennas in IBFD systems. Performances of various antennas designed to cover different bandwidths, fields of view, and concepts of use are overviewed. What was deemed impossible a decade ago is now likely.
全双工通信:天线故事
同时发送和接收(STAR),也称为带内全双工(IBFD),是在频谱拥挤和竞争环境中运行的下一代无线网络的关键使能技术。在同一频率信道上同时发送(Tx)和接收(Rx)可以显著提高通信系统的吞吐量和频谱效率。与STAR系统相关的主要挑战是所需的高Tx/Rx隔离,可以通过结合多层自干扰(SI)消除(包括数字后端处理)的收发器获得。由于收发器“开始和结束”与孔径,因此天线层对STAR操作至关重要。如今,通过设计良好的IBFD天线子系统,可以实现约40-50%的所需隔离,使我们越来越接近实现这一目标,而不久以前这被认为是不可能完成的任务。本文综述了天线在IBFD系统中的作用。概述了各种设计用于覆盖不同带宽、视场和使用概念的天线的性能。十年前被认为是不可能的事情,如今已成为可能。
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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