Performance analysis of cooperative NOMA systems with adaptive mode selection and subchannel allocation

Performance analysis of cooperative NOMA systems with adaptive mode selection and subchannel allocation

In this paper, we study the mode selection and subchannel allocation for the downlink of a multi-user multi-subchannel cooperative non-orthogonal multiple access (C-NOMA) system. Specifically, each non-orthogonal multiple access (NOMA) pair can work in two different modes, i.e., non-cooperative NOMA...

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Bibliographic Details
Main Authors: Cheng, Yanyu, Li, Kwok Hung, Teh, Kah Chan, Luo, Sheng, Wang, Wei
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2021
Subjects:
Engineering::Electrical and electronic engineering
Non-Orthogonal Multiple Access
Cooperative Transmission
Online Access:https://hdl.handle.net/10356/154476
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Institution: Nanyang Technological University
Language: English
Description
Summary:In this paper, we study the mode selection and subchannel allocation for the downlink of a multi-user multi-subchannel cooperative non-orthogonal multiple access (C-NOMA) system. Specifically, each non-orthogonal multiple access (NOMA) pair can work in two different modes, i.e., non-cooperative NOMA (NC-NOMA) and C-NOMA, where the mode selection is based on the users' channel conditions. We propose an adaptive mode selection, subchannel allocation and user pairing (AMS-SAUP) scheme and derive the achievable diversity order by analyzing the upper bound for the outage probability. Simulation results reveal that the AMS-SAUP scheme achieves the same diversity order as the exhaustive search scheme.

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