Coverage Probability of Distributed IRS Systems Under Spatially Correlated Channels
Yükleniyor...
Dosyalar
Tarih
2021
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Ieee-Inst Electrical Electronics Engineers Inc
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
This letter suggests the use of multiple distributed intelligent reflecting surfaces (IRSs) towards a smarter control of the propagation environment. Notably, we also take into account the inevitable correlated Rayleigh fading in IRS-assisted systems. In particular, in a single-input and single-output (SISO) system, we consider and compare two insightful scenarios, namely, a finite number of large IRSs and a large number of finite size IRSs to show which implementation method is more advantageous. In this direction, we derive the coverage probability in closed-form for both cases contingent on statistical channel state information (CSI) by using the deterministic equivalent (DE) analysis. Next, we obtain the optimal coverage probability. Among others, numerical results reveal that the addition of more surfaces outperforms the design scheme of adding more elements per surface. Moreover, in the case of uncorrelated Rayleigh fading, statistical CSI-based IRS systems do not allow the optimization of the coverage probability.
Açıklama
Anahtar Kelimeler
Rayleigh channels, Signal to noise ratio, Correlation, Probability, Manganese, Optimization, Finite element analysis, Intelligent reflecting surface (IRS), coverage probability, deterministic equivalents, beyond 5G networks, Intelligent Surfaces
Kaynak
Ieee Wireless Communications Letters
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
10
Sayı
8
