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IRS-Aided Wideband Dual-Function Radar-Communications with Quantized Phase-Shifts
WEI, Tong; WU, Linlong; MYSORE RAMA RAO, Bhavani Shankar
20222022 IEEE 12th Sensor Array and Multichannel Signal Processing Workshop (SAM)
Peer reviewed
 

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Keywords :
Alternating maximization; dual-function radar-communications; intelligent reflecting surfaces; quantization; Discrete phase; Dual function; Dual-function radar-communication; Intelligent reflecting surface; Quantisation; Radar communication; Reflecting surface; Signalto-interference-plus-noise ratios (SINR); Wide-band; Signal Processing; Control and Systems Engineering; Electrical and Electronic Engineering; dual-function radarcommunications
Abstract :
[en] Intelligent reflecting surfaces (IRS) are increasingly considered as an emerging technology to assist wireless communications and target sensing. In this paper, we consider the quantized IRS-aided wideband dual-function radar-communications system with multi-carrier signaling. Specifically, the radar receive filter, frequency-dependent transmit beamforming and discrete phase-shifts are jointly designed to maximize the average signal-to-interference-plus-noise ratio (SINR) for radar while guaranteeing the communication SINR among all users. The resulting optimization problem has a fractional quartic objective function with difference of convex and discrete phase constraints and is, therefore, highly non-convex. Thus, we solve this problem via the alternating maximization framework, in which the alternating direction method of multipliers and Dinkelbach's algorithm are integrated to tackle the related subproblems. Numerical results demonstrate that the proposed method, even with the low-resolution IRS, achieves better sensing performance compared with non-IRS system.
Disciplines :
Electrical & electronics engineering
Author, co-author :
WEI, Tong ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SPARC
WU, Linlong  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SPARC
MYSORE RAMA RAO, Bhavani Shankar  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SPARC
External co-authors :
no
Language :
English
Title :
IRS-Aided Wideband Dual-Function Radar-Communications with Quantized Phase-Shifts
Publication date :
2022
Event name :
2022 IEEE 12th Sensor Array and Multichannel Signal Processing Workshop (SAM)
Event place :
Trondheim, Nor
Event date :
20-06-2022 => 23-06-2022
By request :
Yes
Peer reviewed :
Peer reviewed
FnR Project :
SPRINGER C18/IS/12734677
Funding text :
This work was supported by the Luxembourg National Research Fund (FNR) through the SPRINGER C18/IS/12734677.
Available on ORBilu :
since 23 November 2023

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