Practical frequency-hopping MIMO joint radar communications:Design and experiment  

作　　者：Jiangtao Liu Kai Wu Tao Su J.Andrew Zhang 

机构地区：[1]National Key Laboratory of Radar Signal Processing,Xidian University,Xi'an,Shanxi 710071,China [2]Global Big Data Technologies Centre,University of Technology Sydney,NSW 2007,Australia

出　　处：《Digital Communications and Networks》2024年第6期1904-1914,共11页数字通信与网络(英文版)

摘　　要：Joint Radar and Communications(JRC)can implement two Radio Frequency(RF)functions using a single of resources,providing significant hardware,power and spectrum savings for wireless systems requiring both functions.Frequency-Hopping(FH)MIMO radar is a popular candidate for JRC because the achieved communication symbol rate can greatly exceed the radar pulse repetition frequency.However,practical transceiver imperfections can cause many existing theoretical designs to fail.In this work,we reveal for the first time the non-trivial impact of hardware imperfections on FH-MIMO JRC and model the impact analytically.We also design new waveforms and correspondingly develop a low-complexity algorithm to jointly estimate the hardware imperfections of unsynchronized receiver.In addition,using low-cost software-defined radios and Commercial Off-The-Shelf(COTS)products,we build the first FH-MIMO JRC experimental platform with simultaneous over-the-air radar and communication validation.Confirmed by simulation and experimental results,the proposed designs achieve high performance for both radar and communications.

关 键 词：Joint radar and communications Frequency-hopping MIMO radar Sampling timing offset Carrier frequency offset Front-end errors Software-defined radio Commercial off-the-shelf 

分 类 号：TN957.51[电子电信—信号与信息处理]