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

  • Hong-Nhu Nguyen Saigon University
  • Ngoc Thuy Trang Nguyen Saigon University
  • Hai Sinh Chu Saigon University
  • Nguyen Minh Quan Bui Saigon University
DOI: https://doi.org/10.21553/rev-jec.396

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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Published
2025-07-02
Issue
Vol. 15, No. 2 (Apr-Jun, 2025)
Section
REV-ECIT Special Issue
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