A BNBF User Selection Scheme for NOMA-Based Cooperative Relaying Systems With SWIPT

被引：155

作者：

Nhu Tri Do ^{[1
]}

da Costa, Daniel Benevides ^{[2
]}

Duong, Trung Q. ^{[3
]}

An, Beongku ^{[4
]}

机构：

[1] Hongik Univ, Dept Elect & Comp Engn, Sejong 30016, South Korea

[2] Fed Univ Cear, Dept Comp Engn, BR-62010560 Sobral, CE, Brazil

[3] Queens Univ Belfast, Dept Elect Elect Engn & Comp Sci, Belfast BT7 1NN, Antrim, North Ireland

[4] Hongik Univ, Dept Comp & Informat Commun Engn, Sejong 30016, South Korea

来源：

IEEE COMMUNICATIONS LETTERS | 2017年 / 21卷 / 03期

基金：

新加坡国家研究基金会;

关键词：

Non-orthogonal multiple access (NOMA); outage performance; simultaneous wireless information and power transfer (SWIPT); user selection; NETWORKS;

D O I：

10.1109/LCOMM.2016.2631606

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

In this letter, we investigate the outage performance of cooperative relaying transmissions in two-user non-orthogonal multiple access systems, wherein simultaneous wireless information and power transfer is employed at the near users to power their relaying operations. To this end, a best-near best-far (BNBF) user selection scheme is proposed. Considering three relaying protocols, i.e., decode-and-forward (DF), amplify-and-forward (AF), and hybrid DF/AF protocols, tight closed-form approximate expressions for the outage probability are derived to evaluate the system performance. Numerical results reveal that, for any relaying protocols used, the diversity order achieved by the BNBF scheme is M + 1, where M is the number of far users, and does not depend on the number of near users.

引用

页码：664 / 667

页数：4

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