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Performance of Joint Symbol Level Precoding and RIS Phase Shift Design in the Finite Block Length Regime with Constellation Rotation
ZIVUKU, Progress; KISSELEFF, Steven; Martins, Wallace A. et al.
2023In IEEE 34th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)
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Keywords :
Symbol level precoding, reconfigurable intelligent surface, energy efficiency, finite block length, constellation rotation, short packets.
Abstract :
[en] In this paper, we tackle the problem of joint symbol level precoding (SLP) and reconfigurable intelligent surface (RIS) phase shift design with constellation rotation in the finite block length regime. We aim to increase energy efficiency by minimizing the total transmit power while satisfying the quality of service constraints. The total power consumption can be significantly minimized through the exploitation of multiuser interference by symbol level precoding and by the intelligent manipulation of the propagation environment using reconfigurable intelligent surfaces. In addition, the constellation rotation per user contributes to energy efficiency by aligning the symbol phases of the users, thus improving the utilization of constructive interference. The formulated power minimization problem is non-convex and correspondingly difficult to solve directly. Hence, we employ an alternating optimization algorithm to tackle the joint optimization of SLP and RIS phase shift design. The optimal phase of each user’s constellation rotation is obtained via an exhaustive search algorithm. Through Monte-Carlo simulation results, we demonstrate that the proposed solution yields substantial power minimization as compared to conventional SLP, zero forcing precoding with RIS as well as the benchmark schemes without RIS.
Disciplines :
Computer science
Author, co-author :
ZIVUKU, Progress  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
KISSELEFF, Steven ;  University of Luxembourg
Martins, Wallace A.;  University of Luxembourg,Interdisciplinary Centre for Security, Reliability and Trust (SnT)
AL-HRAISHAWI, Hayder  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust > SigCom > Team Symeon CHATZINOTAS
CHATZINOTAS, Symeon  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
OTTERSTEN, Björn  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
External co-authors :
no
Language :
English
Title :
Performance of Joint Symbol Level Precoding and RIS Phase Shift Design in the Finite Block Length Regime with Constellation Rotation
Publication date :
08 September 2023
Event name :
IEEE Personal, Indoor and Mobile Radio Communications (PIMRC)
Event place :
Toronto, Canada
Event date :
05-08 September 2023
Audience :
International
Main work title :
IEEE 34th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)
Publisher :
IEEE, Toronto, Canada
Peer reviewed :
Peer reviewed
Focus Area :
Security, Reliability and Trust
FnR Project :
FNR14773976 - Reconfigurable Intelligent Surfaces For Smart Cities, 2020 (01/06/2021-31/05/2024) - Bjorn Ottersten
Funders :
FNR - Fonds National de la Recherche
Available on ORBilu :
since 19 November 2023

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