Optimization scheme for the SWIPT-NOMA opportunity cooperative system

被引：0
|
作者：
Li T. [1 ,2 ]
Ning Q. [1 ]
Wang Z. [3 ]
机构：
[1] School of Computer, Electronics and Information, Guangxi University, Nanning
[2] School of Information Engineering, Nanning University, Nanning
[3] School of Artifical Intelligent, Guangxi University for Nationalities, Nanning
来源：
Tongxin Xuebao/Journal on Communications | 2020年 / 41卷 / 08期
基金：
中国国家自然科学基金;
关键词：
NOMA; Opportunity cooperative relay; Outage probability; Signal power; SWITP; Time allocation;
D O I：
10.11959/j.issn.1000-436x.2020109
中图分类号：
学科分类号：
摘要：
In order to improve the spectrum efficiency and performance of the simultaneous wireless information and power transfer (SWIPT) system, the non-orthogonal multiple access (NOMA) technology was introduced to construct the SWIPT-NOMA opportunistic relay system model. The fixed signal power allocation couldn't adjust with other parameters of the system, and then affect the outage probability and resource utilization of the system. Therefore, a joint signal power and time allocation scheme was proposed to improve the system outage performance. In the proposed scheme, the expression of signal power distribution was obtained under the condition of satisfying the quality of service (QoS) rate of the node with poor channel state, and then the relation between the interruption probability and the time distribution of the system was deduced, the time allocation parameter was adjusted to affect the outage probability. The simulation results show that the constructed NOMA system has better outage performance than orthogonal multiple access (OMA) system, and the proposed joint signal power and time allocation outage scheme can effectively reduce the interruption probability of the system and improve the system performance. © 2020, Editorial Board of Journal on Communications. All right reserved.
引用
收藏
页码：141 / 154
页数：13
相关论文
共 27 条
  • [1] WANG Z, LI T S, YE J, Et al., Reliability modeling and planning of energy harvesting based on uncertainty theory, Journal on Communications, 39, 5, pp. 166-176, (2018)
  • [2] LU X, WANG P, NIYATO D, Et al., Wireless networks with RF energy harvesting: a contemporary survey, IEEE Communications Surveys & Tutorials, 17, 2, pp. 757-789, (2014)
  • [3] BI S, HO C K, ZHANG R., Wireless powered communication: opportunities and challenges, IEEE Communications Magazine, 53, 4, pp. 117-125, (2014)
  • [4] WANG Z, LI T S, YE J, Et al., Energy harvesting networks: a review of recent advances, Guangxi Sciences, 26, 3, pp. 253-266, (2019)
  • [5] DING H, WANG X, COSTA D B D, Et al., Adaptive time-switching based energy harvesting relaying protocols, IEEE Transactions on Communications, 65, 7, pp. 2821-2837, (2017)
  • [6] LIU X L, LI Z, WANG C., Secure decode-and-forward relay SWIPT systems with power splitting scheme, IEEE Transactions on Vehicular Technology, 67, 8, pp. 7341-7354, (2018)
  • [7] CHEN D H, HE Y C, LIN X, Et al., Both worst-case and chance-constrained robust secure SWIPT in miso interference channels, IEEE Transactions on Information Forensics and Security, 13, 2, pp. 306-317, (2017)
  • [8] TANG L, ZHANG X G, ZHU P C, Et al., Wireless information and energy transfer in fading relay channels, IEEE Journal on Selected Areas in Communications, 34, 12, pp. 3632-3645, (2016)
  • [9] ZHONG S, HUANG H, LI R., Outage probability of power splitting SWIPT two-way relay networks in Nakagami-m fading, Eurasip Journal on Wireless Communications & Networking, 11, pp. 1-8, (2018)
  • [10] SARAJLIC M, LIU L, RUSEK F, Et al., Impact of relay cooperation on the performance of large-scale multipair two-way relay networks, 2018 IEEE Global Communications Conference, pp. 1-6, (2018)
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