Low-Complexity Resource Allocation for Downlink Multicarrier NOMA Systems

Chin Liang Wang; Tzu Ying Chen; Yung Fang Chen; Dong Shing Wu

doi:10.1109/PIMRC.2018.8580933

Low-Complexity Resource Allocation for Downlink Multicarrier NOMA Systems

Chin Liang Wang, Tzu Ying Chen, Yung Fang Chen, Dong Shing Wu

Department of Communication Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

15 Scopus citations

Abstract

In this paper, we investigate resource allocation for a downlink multicarrier non-orthogonal multiple access (NOMA) system with a base station and an even number of users, where every two users are grouped together to share some subcarriers for data transmission. We formulate an optimization problem in terms of subcarrier and power allocation to maximize the system capacity under a specific proportional user fairness constraint. For a given subcarrier allocation, we first derive an optimal power allocation factor for two users on a subcarrier subject to maximizing the minimum user capacity on the subcarrier. With such optimal power allocation factors for all subcarriers, a low-complexity suboptimal algorithm is then proposed for joint subcarrier and power allocation to meet the proportional user fairness constraint. Simulation results demonstrate that the proposed scheme provides better system capacity than the conventional orthogonal frequency division multiple access (OFDMA) scheme.

Original language	English
Title of host publication	2018 IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2018
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781538660096
DOIs	https://doi.org/10.1109/PIMRC.2018.8580933
State	Published - 18 Dec 2018
Event	29th IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2018 - Bologna, Italy Duration: 9 Sep 2018 → 12 Sep 2018

Publication series

Name	IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
Volume	2018-September

Conference

Conference	29th IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2018
Country/Territory	Italy
City	Bologna
Period	9/09/18 → 12/09/18

Keywords

Multicarrier transmission
Non-orthogonal multiple access (NOMA)
Orthogonal frequency division multiple access (OFDMA)
Power allocation
Proportional fairness
Resource allocation
Subcarrier allocation

Access to Document

10.1109/PIMRC.2018.8580933

Cite this

Wang, C. L., Chen, T. Y., Chen, Y. F., & Wu, D. S. (2018). Low-Complexity Resource Allocation for Downlink Multicarrier NOMA Systems. In 2018 IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2018 Article 8580933 (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC; Vol. 2018-September). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PIMRC.2018.8580933

Wang, Chin Liang ; Chen, Tzu Ying ; Chen, Yung Fang et al. / Low-Complexity Resource Allocation for Downlink Multicarrier NOMA Systems. 2018 IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2018. Institute of Electrical and Electronics Engineers Inc., 2018. (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC).

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abstract = "In this paper, we investigate resource allocation for a downlink multicarrier non-orthogonal multiple access (NOMA) system with a base station and an even number of users, where every two users are grouped together to share some subcarriers for data transmission. We formulate an optimization problem in terms of subcarrier and power allocation to maximize the system capacity under a specific proportional user fairness constraint. For a given subcarrier allocation, we first derive an optimal power allocation factor for two users on a subcarrier subject to maximizing the minimum user capacity on the subcarrier. With such optimal power allocation factors for all subcarriers, a low-complexity suboptimal algorithm is then proposed for joint subcarrier and power allocation to meet the proportional user fairness constraint. Simulation results demonstrate that the proposed scheme provides better system capacity than the conventional orthogonal frequency division multiple access (OFDMA) scheme.",

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Wang, CL, Chen, TY, Chen, YF & Wu, DS 2018, Low-Complexity Resource Allocation for Downlink Multicarrier NOMA Systems. in 2018 IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2018., 8580933, IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC, vol. 2018-September, Institute of Electrical and Electronics Engineers Inc., 29th IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2018, Bologna, Italy, 9/09/18. https://doi.org/10.1109/PIMRC.2018.8580933

Low-Complexity Resource Allocation for Downlink Multicarrier NOMA Systems. / Wang, Chin Liang; Chen, Tzu Ying; Chen, Yung Fang et al.
2018 IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2018. Institute of Electrical and Electronics Engineers Inc., 2018. 8580933 (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC; Vol. 2018-September).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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Wang CL, Chen TY, Chen YF, Wu DS. Low-Complexity Resource Allocation for Downlink Multicarrier NOMA Systems. In 2018 IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2018. Institute of Electrical and Electronics Engineers Inc. 2018. 8580933. (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC). doi: 10.1109/PIMRC.2018.8580933

Low-Complexity Resource Allocation for Downlink Multicarrier NOMA Systems

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