Performance Analysis of CR-NOMA Network with Active RIS-Enhanced System

Hong-Nhu Nguyen, Ngoc Thuy Trang Nguyen, Hai Sinh Chu, Nguyen Minh Quan Bui

Abstract


This paper proposes a reconfigurable intelligent surface (RIS)-assisted underlay spectrum sharing system, in which a RIS-assisted secondary network shares the spectrum licensed for a primary network. The secondary network consists of a secondary source (BS), an RIS, and a secondary destination (SD), operating in a Rician fading environment. We study the performance of the secondary network while considering a peak power constraint at the BS and an interference power constraint at the primary receiver (PR). Building upon the SNR statistics, we analyze the outage probability and throughput, deriving novel exact expressions for these performance measures. Finally, we conduct exhaustive Monte-Carlo simulations to confirm the correctness of our theoretical analysis.

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DOI: http://dx.doi.org/10.21553/rev-jec.396

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