Open Access
ARTICLE
Outage Behaviors of Active Intelligent Reflecting Surface Enabled NOMA Communications
Zhiping Lu1, Xinwei Yue2,*, Shuo Chen2, Weiguo Ma1
1 School of Information and Communication Engineering, Beijing University of Posts and Telecommunications,
State Key Laboratory of Wireless Mobile Communications, China Academy of Telecommunications Technology (CATT), Beijing, China
2 School of Information and Communication Engineering, Beijing Information Science and Technology University, Beijing, 100101, China
* Corresponding Author: Xinwei Yue. Email:
(This article belongs to the Special Issue: Recent Advances in Backscatter and Intelligent Reflecting Surface Communications for 6G-enabled Internet of Things Networks)
Computer Modeling in Engineering & Sciences 2023, 137(1), 789-812. https://doi.org/10.32604/cmes.2023.027663
Received 08 November 2022; Accepted 16 December 2022; Issue published 23 April 2023
Abstract
Active intelligent reflecting surface (IRS) is a novel and promising technology that is able to overcome the multiplicative fading introduced by passive IRS. In this paper, we consider the application of active IRS to non-orthogonal multiple access (NOMA) networks, where the incident signals are amplified actively through integrating amplifier to reflecting elements. More specifically, the performance of active/passive IRS-NOMA networks is investigated over large and small-scale fading channels. Aiming to characterize the performance of active IRS-NOMA networks, the exact and asymptotic expressions of outage probability for a couple of users, i.e., near-end user and far-end user are derived by exploiting a 1-bit coding scheme. Based on approximated analyses, the diversity orders of user and user are obtained for active IRS-NOMA. In addition, the system throughput of active IRS-NOMA is discussed in the delay-sensitive transmission. The simulation results are carried out to verify that: i) The outage behaviors of active IRS-NOMA networks are superior to that of passive IRS-NOMA networks; ii) As the reflection amplitude factors increase, the active IRS-NOMA networks are capable of furnishing the enhanced outage performance; and iii) The active IRS-NOMA has a larger system throughput than passive IRS-NOMA and conventional communications.
Keywords
Cite This Article
APA Style
Lu, Z., Yue, X., Chen, S., Ma, W. (2023). Outage behaviors of active intelligent reflecting surface enabled NOMA communications. Computer Modeling in Engineering & Sciences, 137(1), 789-812. https://doi.org/10.32604/cmes.2023.027663
Vancouver Style
Lu Z, Yue X, Chen S, Ma W. Outage behaviors of active intelligent reflecting surface enabled NOMA communications. Comput Model Eng Sci. 2023;137(1):789-812 https://doi.org/10.32604/cmes.2023.027663
IEEE Style
Z. Lu, X. Yue, S. Chen, and W. Ma "Outage Behaviors of Active Intelligent Reflecting Surface Enabled NOMA Communications," Comput. Model. Eng. Sci., vol. 137, no. 1, pp. 789-812. 2023. https://doi.org/10.32604/cmes.2023.027663