A novel power allocation scheme under outage constraints in NOMA systems

Cui, Jingjing and Ding, Zhiguo and Fan, Pingzhi (2016) A novel power allocation scheme under outage constraints in NOMA systems. IEEE Signal Processing Letters, 23 (9). pp. 1226-1230. ISSN 1070-9908

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Abstract

In this letter, we study a downlink non-orthogonal multiple access (NOMA) transmission system, where only the average channel state information (CSI) is available at the transmitter. Two criteria in terms of transmit power and user fairness for NOMA systems are used to formulate two optimization problems, subjected to outage probabilistic constraints and the optimal decoding order. We first investigate the optimal decoding order when the transmitter knows only the average CSI, and then, we develop the optimal power allocation schemes in closed form by employing the feature of the NOMA principle for the two problems. Furthermore, the power difference between NOMA systems and OMA systems under outage constraints is obtained.

Item Type: Journal Article
Journal or Publication Title: IEEE Signal Processing Letters
Additional Information: ©2016 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/2200/2208
Subjects:
Departments: Faculty of Science and Technology > School of Computing & Communications
ID Code: 83168
Deposited By: ep_importer_pure
Deposited On: 16 Dec 2016 16:46
Refereed?: Yes
Published?: Published
Last Modified: 22 Feb 2020 03:49
URI: https://eprints.lancs.ac.uk/id/eprint/83168

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