TY - JOUR
T1 - Coverage Probability of STAR-RIS assisted Massive MIMO systems with Correlation and Phase Errors
AU - Papazafeiropoulos, Anastasios
AU - Abdullah, Zaid
AU - Kourtessis, Pandelis
AU - Kisseleff, Steven
AU - Krikidis, Ioannis
N1 - © 2022 IEEE. This is the accepted manuscript version of an article which has been published in final form http://doi.org/ 10.1109/LWC.2022.3179653
PY - 2022/6/1
Y1 - 2022/6/1
N2 - In this letter, we investigate a simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) assisting a massive multiple-input multiple-output (mMIMO) system. In particular, we derive a closed-form expression for the coverage probability of a STAR-RIS assisted mMIMO system while accounting for correlated fading and phase-shift errors. Notably, the phase configuration takes place at every several coherence intervals by optimizing the coverage probability since the latter depends on statistical channel state information (CSI) in terms of large-scale statistics. As a result, we achieve a reduced complexity and overhead for the optimization of passive beamforming, which are increased in the case of STAR-RIS networks with instantaneous CSI. Numerical results corroborate our analysis, shed light on interesting properties such as the impact of the number of RIS elements and the effect of phase errors, along with affirming the superiority of STAR-RIS against reflective-only RIS.
AB - In this letter, we investigate a simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) assisting a massive multiple-input multiple-output (mMIMO) system. In particular, we derive a closed-form expression for the coverage probability of a STAR-RIS assisted mMIMO system while accounting for correlated fading and phase-shift errors. Notably, the phase configuration takes place at every several coherence intervals by optimizing the coverage probability since the latter depends on statistical channel state information (CSI) in terms of large-scale statistics. As a result, we achieve a reduced complexity and overhead for the optimization of passive beamforming, which are increased in the case of STAR-RIS networks with instantaneous CSI. Numerical results corroborate our analysis, shed light on interesting properties such as the impact of the number of RIS elements and the effect of phase errors, along with affirming the superiority of STAR-RIS against reflective-only RIS.
KW - 6G networks.
KW - Array signal processing
KW - Correlation
KW - coverage probability
KW - Finite element analysis
KW - Optimization
KW - Probability density function
KW - Protocols
KW - Reconfigurable intelligent surface (RIS)
KW - Reflection
KW - simultaneous transmission and reflection
KW - spatial correlation
UR - http://www.scopus.com/inward/record.url?scp=85131733164&partnerID=8YFLogxK
U2 - 10.1109/LWC.2022.3179653
DO - 10.1109/LWC.2022.3179653
M3 - Article
AN - SCOPUS:85131733164
SN - 2162-2337
VL - 11
SP - 1738
EP - 1742
JO - IEEE Wireless Communications Letters
JF - IEEE Wireless Communications Letters
IS - 8
ER -