Optimal Resource Allocation Scheme for RIS-Assisted Vehicular Networks

Deploying reconfigurable intelligent surfaces (RIS) in vehicular networks can effectively improve the quality of wireless channel and increase network throughout, which is realized by optimizing the phase shifters. However, the dynamic network environment and complex multi-user interference seriousl...

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Bibliographic Details
Published in2024 43rd Chinese Control Conference (CCC) pp. 6193 - 6198
Main Authors Chen, Wenxuan, Su, Jiawei, Liu, Zhixin
Format Conference Proceeding
LanguageEnglish
Published Technical Committee on Control Theory, Chinese Association of Automation 28.07.2024
Subjects
Array signal processing
Heuristic algorithms
Interference
Interference management
Phase shift optimization
Phase shifters
Reconfigurable intelligent surfaces
RIS
Simulation
Vehicular networks
Wireless communication
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Summary:Deploying reconfigurable intelligent surfaces (RIS) in vehicular networks can effectively improve the quality of wireless channel and increase network throughout, which is realized by optimizing the phase shifters. However, the dynamic network environment and complex multi-user interference seriously affect network reliability. Enhancing transmission powers blindly cannot solve the interference problem but also reduces the transmission efficiency of the RIS-based vehicular networks. To address the above challenges, this paper proposed a joint optimization scheme of transmission beamforming and phase shift. Based on the block coordinate descent (BCD) theory, this paper decomposed the scheme into two sub-problems: transmission beamforming optimization and RIS phase shift optimization, and the joint optimization algorithm was developted. Simulation results have demonstrated that the transmission rate has been improved with the assistance of RIS, with the multi-user interference effect being well-depressed.
ISSN:1934-1768
DOI:10.23919/CCC63176.2024.10662500