Power Allocation Algorithm of CR-NOMA System Under Imperfect SIC

doi:10.19678/j.issn.1000-3428.0059060

Abstract

Abstract: This paper presents a study on the total transmission rate of secondary users in a Cognitive Radio(CR) Non-Orthogonal Multiple Access(NOMA) hybrid system under imperfect Successive Interference Cancellation(SIC). On this basis, a power allocation algorithm based on parameter transformation and KKT conditions is proposed. In this system, the secondary users use NOMA to access the authorized channel. Considering the constraints of the primary and secondary users' Quality of Service(QoS) and maximum transmission power, the original constraint conditions are rewritten by using the parameter transformation method to construct a new optimization problem. The optimal power allocation factor is solved by using KKT conditions in order to maximize the total transmission rate of secondary users in the system. Simulation results show that compared with the CNPA algorithm and the equal power allocation algorithm, this algorithm can significantly improve the total transmission rate of secondary users in the system, and has a better tolerance for imperfect SIC.

Key words: Non-Orthogonal Multiple Access(NOMA), Cognitive Radio(CR), Successive Interference Cancellation(SIC), power allocation, Quality of Service(QoS)

摘要： 在不完全连续干扰消除（SIC）条件下，对认知无线电-非正交多址混合系统中的次用户总传输速率进行研究，提出一种基于参数变换和KKT条件的功率分配算法。采用非正交多址方式使次用户接入授权信道，在主次用户服务质量、最大发射功率等约束条件下，通过参数变换对原约束条件进行改写设计新的优化问题，并利用KKT条件求解最优功率分配因子进而实现系统中次用户总传输速率的最大化。仿真结果表明，与CNPA算法和等功率分配算法相比，该算法可明显提高系统中次用户的总传输速率，并且对于不完全SIC具有更强的承受能力。

关键词: 非正交多址接入, 认知无线电, 连续干扰消除, 功率分配, 服务质量

CLC Number:

TN929

ZHOU Shuo, QIU Runhe. Power Allocation Algorithm of CR-NOMA System Under Imperfect SIC[J]. Computer Engineering, 2021, 47(8): 195-200,209.

周烁, 仇润鹤. 不完全SIC下CR-NOMA系统的功率分配算法[J]. 计算机工程, 2021, 47(8): 195-200,209.

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References

[1] DAI L, WANG B, YUAN Y, et al. Non-orthogonal multiple access for 5G:solutions, challenges, opportunities, and future research trends[J]. IEEE Communications Magazine, 2015, 53(9): 74-81.
[2] WANG H, HUANG Y, YANG L, et al. A cooperative transmission design combining network coding and superposition coding[C]//Proceedings of 2010 International Conference on Wireless Communications & Signal Processing.Washington D.C., USA:IEEE Press, 2010:25-48.
[3] CHANG Y, FUKAWA K.Non-orthogonal multiple access with phase rotation employing joint MUD and SIC[C]//Proceedings of the 87th Vehicular Technology Conference.Washington D.C., USA:IEEE Press, 2018:2465-2478.
[4] YANG Z, DING Z, FAN P, et al. A general power allocation scheme to guarantee quality of service in downlink and uplink NOMA systems[J]. IEEE Transactions on Wireless Communications, 2016, 15(11): 7244-7257.
[5] ZHANG L, XIAO M, WU G, et al. A survey of advanced techniques for spectrum sharing in 5G networks[J]. IEEE Wireless Communications, 2017, 24(5): 44-51.
[6] LÜ, CHEN J, NI Q, et al. Cognitive non-orthogonal multiple access with cooperative relaying:a new wireless frontier for 5G spectrum sharing[J]. IEEE Communications Magazine, 2018, 56(4): 188-195.
[7] LI C, GUO D, GUO K, et al. Energy performance of partial relay selection in underlay CR-NOMA networks[C]//Proceedings of the 28th Wireless and Optical Communications Conference.Washington D.C., USA:IEEE Press, 2019:1-5.
[8] ARZYKULOV S, NAURYZBAYEV G, TSIFTSIS T A, et al. Outage performance of underlay CR-NOMA networks[C]//Proceedings of the 10th International Conference on Wireless Communications and Signal Processing.Washington D.C., USA:IEEE Press, 2018:25-42.
[9] ARZYKULOV S, TSIFTSIS T A, NAURYZBAYEV G, et al. Outage performance of cooperative underlay CR-NOMA with imperfect CSI[J]. IEEE Communications Letters, 2019, 23(1): 176-179.
[10] ZHAO W, SHE R, BAO H.Energy efficiency maximization for two-way relay assisted CR-NOMA system based on SWIPT[J]. IEEE Access, 2019, 7:72062-72071.
[11] XIANG Z, YANG W, PAN G, et al. Physical layer security in cognitive radio inspired NOMA network[J]. IEEE Journal of Selected Topics in Signal Processing, 2019, 13(3): 700-714.
[12] BUDHIRAJA I, KUMAR N, TYAGI S, et al. URJA:usage jammer as a resource allocation for secure transmission in a CR-NOMA-based 5G femtocell system[J]. IEEE Systems Journal, 2021, 15(2): 1776-1785.
[13] ISLAM S R, AVAZOV N, DOBRE O A, et al. Power-domain Non-Orthogonal Multiple Access(NOMA) in 5G systems:potentials and challenges[J]. IEEE Communications Surveys & Tutorials, 2016, 19(2): 721-742.
[14] CHEN X, JIA R, NG D W K.On the design of massive non-orthogonal multiple access with imperfect successive interference cancellation[J]. IEEE Transactions on Communications, 2018, 67(3): 2539-2551.
[15] LI X, LIU M, DENG C, et al. Full-duplex cooperative NOMA relaying systems with I/Q imbalance and imperfect SIC[J]. IEEE Wireless Communications Letters, 2019, 9(1): 17-20.
[16] IM G, LEE J H.Outage probability for cooperative NOMA systems with imperfect SIC in cognitive radio networks[J]. IEEE Communications Letters, 2019, 23(4): 692-695.
[17] BARIAH L, MUHAIDAT S, AL-DWEIK A.Error performance of NOMA-based cognitive radio networks with partial relay selection and interference power constraints[J]. IEEE Transactions on Communications, 2020, 68(2): 765-777.
[18] DO D T, LE A T, LEE B M.NOMA in cooperative underlay cognitive radio networks under imperfect SIC[J]. IEEE Access, 2020, 8:86180-86195.
[19] LUO L, LI Q, CHENG J.Performance analysis of overlay cognitive NOMA systems with imperfect successive interference cancellation[J]. IEEE Transactions on Communications, 2020, 68(8): 4709-4722.
[20] ARZYKULOV S, NAURYZBAYEV G, HASHMI M S, et al. Hardware-and interference-limited cognitive IoT relaying NOMA networks with imperfect SIC over generalized non-homogeneous fading channels[J]. IEEE Access, 2020, 8:72942-72956.

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