A novel power allocation scheme under outage constraints in NOMA systems

Jingjing Cui; Zhiguo Ding; Pingzhi Fan

doi:10.1109/LSP.2016.2591561

A novel power allocation scheme under outage constraints in NOMA systems

Jingjing Cui, Zhiguo Ding, Pingzhi Fan

Electrical Engineering

Southwest Jiaotong University

Research output: Contribution to journal › Article › peer-review

142 Scopus citations

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.

Original language	British English
Article number	7513455
Pages (from-to)	1226-1230
Number of pages	5
Journal	IEEE Signal Processing Letters
Volume	23
Issue number	9
DOIs	https://doi.org/10.1109/LSP.2016.2591561
State	Published - Sep 2016

Keywords

Average channel state information (CSI)
non-orthogonal multiple access (NOMA)
power allocation
probabilistic constraints

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10.1109/LSP.2016.2591561

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title = "A novel power allocation scheme under outage constraints in NOMA systems",

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.",

keywords = "Average channel state information (CSI), non-orthogonal multiple access (NOMA), power allocation, probabilistic constraints",

author = "Jingjing Cui and Zhiguo Ding and Pingzhi Fan",

note = "Funding Information: The work of J. Cui and P. Fan was supported by the National Science and Technology Major Project (No. 2016ZX03001018-002), the National Science Foundation of China (NSFC, No. 61471302), and 111 Project (No. 111-2-14). The work of Z. Ding was supported by H2020-MSCA-RISE-2015 under grant number 690750, and the UK EPSRC under grant number EP/N005597/1. Publisher Copyright: {\textcopyright} 1994-2012 IEEE.",

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doi = "10.1109/LSP.2016.2591561",

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AU - Ding, Zhiguo

AU - Fan, Pingzhi

N1 - Funding Information: The work of J. Cui and P. Fan was supported by the National Science and Technology Major Project (No. 2016ZX03001018-002), the National Science Foundation of China (NSFC, No. 61471302), and 111 Project (No. 111-2-14). The work of Z. Ding was supported by H2020-MSCA-RISE-2015 under grant number 690750, and the UK EPSRC under grant number EP/N005597/1. Publisher Copyright: © 1994-2012 IEEE.

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N2 - 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.

AB - 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.

KW - Average channel state information (CSI)

KW - non-orthogonal multiple access (NOMA)

KW - power allocation

KW - probabilistic constraints

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JO - IEEE Signal Processing Letters

JF - IEEE Signal Processing Letters

IS - 9

M1 - 7513455

ER -

A novel power allocation scheme under outage constraints in NOMA systems

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