Cooperative Non-orthogonal Multiple Access with Simultaneous Wireless Information and Power Transfer

Yuanwei Liu, Zhiguo Ding, Maged Elkashlan, H. Vincent Poor

Research output: Contribution to journalArticlepeer-review

560 Scopus citations

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.

Original languageEnglish (US)
Article number7445146
Pages (from-to)938-953
Number of pages16
JournalIEEE Journal on Selected Areas in Communications
Volume34
Issue number4
DOIs
StatePublished - Apr 2016

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Keywords

  • Non-orthogonal multiple access
  • User selection
  • simultaneous wireless information and power transfer
  • stochastic geometry

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