Home > Research > Publications & Outputs > Cooperative non-orthogonal multiple access with...

Links

Text available via DOI:

View graph of relations

Cooperative non-orthogonal multiple access with simultaneous wireless information and power transfer

Research output: Contribution to journalJournal article

Published
Close
<mark>Journal publication date</mark>04/2016
<mark>Journal</mark>IEEE Journal on Selected Areas in Communications
Issue number4
Volume34
Number of pages16
Pages (from-to)938-953
Publication statusPublished
Early online date31/03/16
Original languageEnglish

Abstract

In this paper, the application of simultaneous wireless information and power transfer (SWIPT) to nonorthogonal multiple access (NOMA) networks in which users are spatially randomly located is investigated. A new co-operative SWIPT NOMA protocol is proposed, in which near NOMA users that are close to the source act as energy harvesting relays to help far NOMA users. Since the locations of users have a significant impact on the performance, three user selection schemes based on the user distances from the base station are proposed. To characterize the performance of the proposed selection schemes, closed-form expressions for the outage probability and system throughput are derived. These analytical results demonstrate that the use of SWIPT will not jeopardize the diversity gain compared to the conventional NOMA. The proposed results confirm that the opportunistic use of node locations for user selection can achieve low outage probability and deliver superior throughput in comparison to the random selection scheme.