Accurate Closed-Form Approximations to Channel Distributions of RIS-Aided Wireless Systems

Liang Yang, Fanxu Meng, Qingqing Wu, Daniel Benevides da Costa, Mohamed-Slim Alouini

Research output: Contribution to journalArticlepeer-review

109 Scopus citations


This paper proposes highly accurate closed-form approximations to channel distributions of two different reconfigurable intelligent surface (RIS)-based wireless system setups, namely, dual-hop RIS-aided (RIS-DH) scheme and RIS-aided transmit (RIS-T) scheme. Differently from previous works, the proposed approximations reveal to be very tight for arbitrary number N of reflecting metasurface’s elements. Our findings are then applied to the performance analysis of the considered systems, in which the outage probability, bit error rate, and average channel capacity are derived. Results show that the achievable diversity orders Gd for RIS-DH and RIS-T schemes are N-1
Original languageEnglish (US)
Pages (from-to)1-1
Number of pages1
JournalIEEE Wireless Communications Letters
StatePublished - 2020

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KAUST Repository Item: Exported on 2020-10-01


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