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Title: Two-step user pairing for OFDM-based cooperative NOMA systems
Authors: Cheng, Yanyu
Li, Kwok Hung
Teh, Kah Chan
Luo, Sheng
Wang, Wei
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2020
Source: Cheng, Y., Li, K. H., Teh, K. C., Luo, S. & Wang, W. (2020). Two-step user pairing for OFDM-based cooperative NOMA systems. IEEE Communications Letters, 24(4), 903-906.
Journal: IEEE Communications Letters 
Abstract: In this letter, we propose a two-step user-paring scheme for an orthogonal frequency-division multiplexing (OFDM)-based cooperative non-orthogonal multiple-access (NOMA) system where far users cannot communicate with the base station directly. The first step is for allocating near users, and the second step is for allocating far users. To evaluate the performance of the proposed scheme, we derive the closed-form expression for the upper bound of the outage probability, and then obtain the achievable diversity gain. Numerical results show that the proposed scheme can achieve the optimal diversity gain confirmed by exhaustive search.
ISSN: 1089-7798
DOI: 10.1109/LCOMM.2020.2964665
Schools: School of Electrical and Electronic Engineering 
Rights: © 2020 IEEE. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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