Low-Complexity Joint User and Power Scheduling for Downlink NOMA over Fading Channels

Do Yup Kim; Hamid Jafarkhani; Jang Won Lee

doi:10.1109/VTC2021-Spring51267.2021.9448865

Low-Complexity Joint User and Power Scheduling for Downlink NOMA over Fading Channels

Do Yup Kim, Hamid Jafarkhani, Jang Won Lee

Department of Electrical and Electronic Engineering

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

3 Citations (Scopus)

Abstract

In this paper, we study the joint user and power scheduling for downlink NOMA over fading channels. Specifically, we focus on a stochastic optimization problem to maximize the weighted average sum rate while ensuring given minimum average data rates of users. To address this problem, we first develop an opportunistic user and power scheduling algorithm (OUPS) based on the duality and stochastic optimization theories. By OUPS, the stochastic problem is transformed into a series of deterministic ones for the instantaneous weighted sum rate maximization for each slot. Thus, we additionally develop a heuristic algorithm with very low computational complexity, called user selection and power allocation algorithm (USPA), for the instantaneous weighted sum rate maximization problem. Via simulation results, we demonstrate that USPA provides near-optimal performance with very low computational complexity, and OUPS well guarantees given minimum average data rates.

Original language	English
Title of host publication	2021 IEEE 93rd Vehicular Technology Conference, VTC 2021-Spring - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781728189642
DOIs	https://doi.org/10.1109/VTC2021-Spring51267.2021.9448865
Publication status	Published - 2021 Apr
Event	93rd IEEE Vehicular Technology Conference, VTC 2021-Spring - Virtual, Online Duration: 2021 Apr 25 → 2021 Apr 28

Publication series

Name	IEEE Vehicular Technology Conference
Volume	2021-April
ISSN (Print)	1550-2252

Conference

Conference	93rd IEEE Vehicular Technology Conference, VTC 2021-Spring
City	Virtual, Online
Period	21/4/25 → 21/4/28

Bibliographical note

Funding Information:
ACKNOWLEDGMENT The work of D.-Y. Kim and J.-W. Lee was supported in part by the NRF grant funded by the Korea government (MSIT) (NRF-2017R1A2B4006908, NRF-2019R1A2C2084870), and the work of H. Jafarkhani was supported in part by the NSF Award CCF-2008786.

Publisher Copyright:
© 2021 IEEE.

All Science Journal Classification (ASJC) codes

Computer Science Applications
Electrical and Electronic Engineering
Applied Mathematics

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10.1109/VTC2021-Spring51267.2021.9448865

Cite this

Kim, D. Y., Jafarkhani, H., & Lee, J. W. (2021). Low-Complexity Joint User and Power Scheduling for Downlink NOMA over Fading Channels. In 2021 IEEE 93rd Vehicular Technology Conference, VTC 2021-Spring - Proceedings [9448865] (IEEE Vehicular Technology Conference; Vol. 2021-April). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VTC2021-Spring51267.2021.9448865

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title = "Low-Complexity Joint User and Power Scheduling for Downlink NOMA over Fading Channels",

abstract = "In this paper, we study the joint user and power scheduling for downlink NOMA over fading channels. Specifically, we focus on a stochastic optimization problem to maximize the weighted average sum rate while ensuring given minimum average data rates of users. To address this problem, we first develop an opportunistic user and power scheduling algorithm (OUPS) based on the duality and stochastic optimization theories. By OUPS, the stochastic problem is transformed into a series of deterministic ones for the instantaneous weighted sum rate maximization for each slot. Thus, we additionally develop a heuristic algorithm with very low computational complexity, called user selection and power allocation algorithm (USPA), for the instantaneous weighted sum rate maximization problem. Via simulation results, we demonstrate that USPA provides near-optimal performance with very low computational complexity, and OUPS well guarantees given minimum average data rates.",

author = "Kim, {Do Yup} and Hamid Jafarkhani and Lee, {Jang Won}",

note = "Funding Information: ACKNOWLEDGMENT The work of D.-Y. Kim and J.-W. Lee was supported in part by the NRF grant funded by the Korea government (MSIT) (NRF-2017R1A2B4006908, NRF-2019R1A2C2084870), and the work of H. Jafarkhani was supported in part by the NSF Award CCF-2008786. Publisher Copyright: {\textcopyright} 2021 IEEE.; 93rd IEEE Vehicular Technology Conference, VTC 2021-Spring ; Conference date: 25-04-2021 Through 28-04-2021",

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Kim, DY, Jafarkhani, H & Lee, JW 2021, Low-Complexity Joint User and Power Scheduling for Downlink NOMA over Fading Channels. in 2021 IEEE 93rd Vehicular Technology Conference, VTC 2021-Spring - Proceedings., 9448865, IEEE Vehicular Technology Conference, vol. 2021-April, Institute of Electrical and Electronics Engineers Inc., 93rd IEEE Vehicular Technology Conference, VTC 2021-Spring, Virtual, Online, 21/4/25. https://doi.org/10.1109/VTC2021-Spring51267.2021.9448865

Low-Complexity Joint User and Power Scheduling for Downlink NOMA over Fading Channels. / Kim, Do Yup; Jafarkhani, Hamid; Lee, Jang Won.

2021 IEEE 93rd Vehicular Technology Conference, VTC 2021-Spring - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2021. 9448865 (IEEE Vehicular Technology Conference; Vol. 2021-April).

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

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N1 - Funding Information: ACKNOWLEDGMENT The work of D.-Y. Kim and J.-W. Lee was supported in part by the NRF grant funded by the Korea government (MSIT) (NRF-2017R1A2B4006908, NRF-2019R1A2C2084870), and the work of H. Jafarkhani was supported in part by the NSF Award CCF-2008786. Publisher Copyright: © 2021 IEEE.

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N2 - In this paper, we study the joint user and power scheduling for downlink NOMA over fading channels. Specifically, we focus on a stochastic optimization problem to maximize the weighted average sum rate while ensuring given minimum average data rates of users. To address this problem, we first develop an opportunistic user and power scheduling algorithm (OUPS) based on the duality and stochastic optimization theories. By OUPS, the stochastic problem is transformed into a series of deterministic ones for the instantaneous weighted sum rate maximization for each slot. Thus, we additionally develop a heuristic algorithm with very low computational complexity, called user selection and power allocation algorithm (USPA), for the instantaneous weighted sum rate maximization problem. Via simulation results, we demonstrate that USPA provides near-optimal performance with very low computational complexity, and OUPS well guarantees given minimum average data rates.

AB - In this paper, we study the joint user and power scheduling for downlink NOMA over fading channels. Specifically, we focus on a stochastic optimization problem to maximize the weighted average sum rate while ensuring given minimum average data rates of users. To address this problem, we first develop an opportunistic user and power scheduling algorithm (OUPS) based on the duality and stochastic optimization theories. By OUPS, the stochastic problem is transformed into a series of deterministic ones for the instantaneous weighted sum rate maximization for each slot. Thus, we additionally develop a heuristic algorithm with very low computational complexity, called user selection and power allocation algorithm (USPA), for the instantaneous weighted sum rate maximization problem. Via simulation results, we demonstrate that USPA provides near-optimal performance with very low computational complexity, and OUPS well guarantees given minimum average data rates.

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Low-Complexity Joint User and Power Scheduling for Downlink NOMA over Fading Channels

Abstract

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