TY - JOUR
T1 - Impact of Phase-Noise and Spatial Correlation on Double-RIS-Assisted Multiuser MISO Networks
AU - Abdullah, Zaid
AU - Papazafeiropoulos, Anastasios
AU - Kisseleff, Steven
AU - Chatzinotas, Symeon
AU - Ottersten, Bjorn
N1 - © 2012 IEEE. This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see https://creativecommons.org/licenses/by/4.0/
PY - 2022/5/17
Y1 - 2022/5/17
N2 - We study the performance of a phase-noise impaired double reconfigurable intelligent surface (RIS)-aided multiuser (MU) multiple-input single-output (MISO) system under spatial correlation at both RISs and base-station (BS). The downlink achievable rate is derived in closed-form under maximum ratio transmission (MRT) precoding. In addition, we obtain the optimal phase-shift design at both RISs in closed-form for the considered channel and phase-noise models. Numerical results validate the analytical expressions, and highlight the effects of different system parameters on the achievable rate. Our analysis shows that phase-noise can severely degrade the performance when users do not have direct links to both RISs, and can only be served via the double-reflection link. Also, we show that high spatial correlation at RISs is essential for high achievable rates.
AB - We study the performance of a phase-noise impaired double reconfigurable intelligent surface (RIS)-aided multiuser (MU) multiple-input single-output (MISO) system under spatial correlation at both RISs and base-station (BS). The downlink achievable rate is derived in closed-form under maximum ratio transmission (MRT) precoding. In addition, we obtain the optimal phase-shift design at both RISs in closed-form for the considered channel and phase-noise models. Numerical results validate the analytical expressions, and highlight the effects of different system parameters on the achievable rate. Our analysis shows that phase-noise can severely degrade the performance when users do not have direct links to both RISs, and can only be served via the double-reflection link. Also, we show that high spatial correlation at RISs is essential for high achievable rates.
KW - channel correlation
KW - multiuser communication
KW - phase-noise
KW - Reconfigurable intelligent surface (RIS)
UR - http://www.scopus.com/inward/record.url?scp=85130479457&partnerID=8YFLogxK
U2 - 10.1109/LWC.2022.3175539
DO - 10.1109/LWC.2022.3175539
M3 - Article
AN - SCOPUS:85130479457
SN - 2162-2337
VL - 11
SP - 1473
EP - 1477
JO - IEEE Wireless Communications Letters
JF - IEEE Wireless Communications Letters
IS - 7
ER -