Cooperative non-orthogonal multiple access for two-way relay networks

被引：4
|
作者：
Fang, Zhaoxi [1 ]
Li, Jun [1 ]
Lu, Yingzhi [2 ]
机构：
[1] Zhejiang Wanli Univ, Coll Informat & Intelligent Engn, Ningbo 315100, Peoples R China
[2] Zhejiang Wanli Univ, Literature & Informat Ctr, Ningbo 315100, Peoples R China
来源：
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS | 2020年 / 115卷
关键词：
Cooperative NOMA; Two-way relay network; Decode-and-forward; Asymptotic analysis; NOMA;
D O I：
10.1016/j.aeue.2019.153021
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, we propose a cooperative non-orthogonal multiple access (NOMA) based relaying scheme for a two-way relay network (TWRN) where one user communicates with the base station (BS) directly while the other indirect-link user exchanges message with the BS via the help of a decode-and-forward (DF) relay station. We analyze the sum-rate performance of the proposed scheme, and derive a closed-form expression for the ergodic capacity. Furthermore, we analyze the asymptotic performance in the high signal-to-noise ratio (SNR) region. Simulation results show that the proposed DF based cooperative NOMA TWR transmission scheme achieves a much higher sum-rate than its AF counterpart and conventional time-division multiple access (TDMA) based scheme. (C) 2019 Elsevier GmbH. All rights reserved.
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收藏
页数：5
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