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Power Allocation for Non-Orthogonal Multiple Access in HetNet with Imperfect Channel State Information

Published: 22 October 2018 Publication History

Abstract

In this paper1, power allocation problem is studied in non-orthogonal multiple access (NOMA) heterogeneous network (HetNet), in which base stations with NOMA protocol can communicate with multiple users in cell. The main aim of this paper is to maximize the energy efficiency (EE) by considering imperfect channel state information (CSI). It is proved that the optimization problem is non-convex due to the constraint of outage probability limit. Therefore, it's essential to transform the probabilistic problem by theoretical derivation. Then, an optimal search algorithm is proposed to achieve the power allocation. Finally, simulation results show that NOMA HetNet with the proposed algorithm has more advantages in EE compared with the related work for conventional orthogonal frequency multiple access (OFDMA) HetNet case.

References

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Dhillon H S, Ganti R K, and Baccelli F, et al. 2012. Modeling and Analysis of K-Tier Downlink Heterogeneous Cellular Networks. IEEE Journal on Selected Areas in Communications, 30(3), 550--560.
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Yang K, Martin S, and Quadri D, et al. 2017. Energy-Efficient Downlink Resource Allocation in Heterogeneous OFDMA Networks. IEEE Transactions on Vehicular Technology, 66(6), 5086--5098.
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Moltafet M, Azmi P, and Mokari N, et al. 2018. Optimal and Fair Energy Efficient Resource Allocation for Energy Harvesting Enabled-PD-NOMA Based HetNets. IEEE Transactions on Wireless Communications, 17(3), 2054--2067.
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Fang F, Zhang H, and Cheng J, et al. 2016. Energy-efficient Resource Allocation for Downlink Non-orthogonal multiple access Network. IEEE Transactions on Communications, 64(9), 3722--3732.
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Zhang H, Liu H, and Cheng J, et al. 2017. Downlink Energy Efficiency of Power Allocation and Wireless Backhaul Bandwidth Allocation in Heterogeneous Small Cell Networks. IEEE Transactions on Communications, 66(4), 1705--1716.
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Zhao J, Liu Y, and Chai KK, et al. 2017. Spectrum Allocation and Power Control for Non-Orthogonal Multiple Access in HetNets. IEEE Transactions on Wireless Communications, 16(9), 5825--5837.
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Xu B, Chen Y, and Carrión J R, et al. 2017. Resource Allocation in Energy-Cooperation Enabled Two-tier NOMA HetNets Towards Green 5G. IEEE Journal on Selected Areas in Communications, 35(12), 2578--2770.
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Fang F, Zhang H, and Cheng J, et al. 2017. Joint User Scheduling and Power Allocation Optimization for Energy Efficient NOMA Systems with Imperfect CSI. IEEE Journal on Selected Areas in Communications, 35(12), 2874--2885.
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Zhang H, Fang F, and Cheng J, et al. 2018. Energy-efficient Resource Allocation in NOMA Heterogeneous Network. IEEE Wireless Communications, 25(2), 48--53.
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Wang X, Zheng F C, and Zhu P, et al. 2016. Energy-Efficient Resource Allocation in Coordinated Downlink Multicell OFDMA Systems. IEEE Transactions on Vehicular Technology, 65(3), 1395--1408.
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  • (2019)Fair Optimal Power Allocation for Non-orthogonal Multiple Access Heterogeneous NetworksProceedings of the 2019 3rd High Performance Computing and Cluster Technologies Conference10.1145/3341069.3341088(279-283)Online publication date: 22-Jun-2019

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  1. Power Allocation for Non-Orthogonal Multiple Access in HetNet with Imperfect Channel State Information

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    cover image ACM Other conferences
    CSAE '18: Proceedings of the 2nd International Conference on Computer Science and Application Engineering
    October 2018
    1083 pages
    ISBN:9781450365123
    DOI:10.1145/3207677
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    Published: 22 October 2018

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    Author Tags

    1. heterogeneous network (HetNet)
    2. imperfect channel state information (CSI)
    3. non-orthogonal multiple access (NOMA)
    4. orthogonal frequency multiple access (OFDMA)
    5. power allocation

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    CSAE '18 Paper Acceptance Rate 189 of 383 submissions, 49%;
    Overall Acceptance Rate 368 of 770 submissions, 48%

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    • (2019)Fair Optimal Power Allocation for Non-orthogonal Multiple Access Heterogeneous NetworksProceedings of the 2019 3rd High Performance Computing and Cluster Technologies Conference10.1145/3341069.3341088(279-283)Online publication date: 22-Jun-2019

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