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

Author(s): Liu, Yuanwei; Ding, Zhiguo; Elkashlan, Maged; Poor, H Vincent

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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.
Publication Date: Apr-2016
Citation: Liu, Yuanwei, Zhiguo Ding, Maged Elkashlan, and H. Vincent Poor. "Cooperative non-orthogonal multiple access with simultaneous wireless information and power transfer." IEEE Journal on Selected Areas in Communications 34, no. 4 (2016): 938-953. doi:10.1109/JSAC.2016.2549378
DOI: 10.1109/JSAC.2016.2549378
ISSN: 0733-8716
EISSN: 1558-0008
Pages: 938 - 953
Type of Material: Journal Article
Journal/Proceeding Title: IEEE Journal on Selected Areas in Communications
Version: Author's manuscript

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