Radar and Communication Co-existence: an Overview

TL;DR

This paper surveys recent advances in co-existing radar and communication systems, focusing on signal models, waveform design, and interference mitigation techniques to enable spectrum sharing for high-quality wireless and sensing applications.

Contribution

It provides a comprehensive overview of recent research developments in radar-communication coexistence, serving as a starting point for new researchers in the field.

Findings

Various interference mitigation techniques are effective in spectrum sharing.

Waveform design plays a crucial role in radar-communication coexistence.

Recent signal processing methods improve spectrum efficiency and system performance.

Abstract

Increased amounts of bandwidth are required to guarantee both high-quality/high-rate wireless services (4G and 5G) and reliable sensing capabilities such as automotive radar, air traffic control, earth geophysical monitoring and security applications. Therefore, co-existence between radar and communication systems using overlapping bandwidths has been a primary investigation field in recent years. Various signal processing techniques such as interference mitigation, pre-coding or spatial separation, and waveform design allow both radar and communications to share the spectrum. This article reviews recent work on co-existence between radar and communication systems, including signal models, waveform design and signal processing techniques. Our goal is to survey contributions in this area in order to provide a primary starting point for new researchers interested in these problems.