Paper Info
Title
Joint Waveform and Phase Shift Design for RIS-Assisted Integrated Sensing and Communication Based on Mutual Information
Abstract
In this letter, we propose using a reconfigurable intelligent surface (RIS) to improve the performance of integrated sensing and communication (ISAC) systems since it can customize the wireless propagation environment by tuning phase shifts. However, it is not straightforward to integrate the RIS into ISAC systems. As the waveform design for the ISAC system is highly dependent on the channel conditions, the phase shift design of the RIS is fully coupled with the waveform design at the base station (BS). To address this challenge, we jointly optimize the beamformer at the BS and the phase shifts at the RIS in order to maximize the communication data rate and the mutual information (MI) for sensing, and then develop an efficient algorithm to solve this problem. Simulation results show that the proposed algorithm can effectively improve both sensing and communication performance.
Year
DOI
Venue
2022
10.1109/LCOMM.2022.3195062
IEEE Communications Letters
Keywords
DocType
Volume
Reconfigurable intelligent surfaces,integrated sensing and communication,waveform design
Journal
26
Issue
ISSN
Citations 
10
1089-7798
0
PageRank 
References 
Authors
0.34
10
1
Name
Order
Citations
PageRank
Hongliang Zhang157747.71