基于信能同传的认知中继网络性能研究

doi:10.19678/j.issn.1000-3428.0056212

摘要/Abstract

摘要： 针对认知网络传输中频谱效率与能量效率较低的问题，提出一种基于信能同传的认知中继网络时隙分配与传输方案。建立认知网络传输模型，实现认知用户和主用户交替使用频谱传输，在认知用户源节点与目的节点之间引入中继节点，从而在主用户占用频谱传输时采集和存储主用户发射信号的能量，并在频谱释放后利用该能量转发信号，同时推导出非完美频谱感知可靠性下认知用户吞吐量和能量效率表达式。仿真结果表明，该方案所得认知用户传输性能随着频谱感知可靠性的增加而提升，在低功耗场景下认知用户中引入能量采集中继节点，可有效提高认知网络吞吐量和能量效率。

关键词: 信能同传, 认知中继网络, 频谱感知, 吞吐量, 能量效率

Abstract: To address the low spectrum efficiency and low energy efficiency in cognitive network transmission,this paper proposes a slot allocation and transmission scheme based on simultaneous information and power transfer for cognitive relay networks.The transmission model for cognitive networks is established,in which the cognitive user and the primary user use spectrum transmission alternately.Then the relay node is introduced between the cognitive user’s source node and the destination node in order to collect and store the energy of the primary user’s transmitted signal when the primary user occupies the spectrum transmission.The energy is used to forward signals after the spectrum is released,and on this basis the expressions of the cognitive user’s throughput and energy efficiency under imperfect spectrum sensing reliability is deduced.Simulation results show that the transmission performance of the cognitive user of the proposed scheme increases with the spectrum sensing reliability,and the introduction of energy collection relay node for the cognitive user in low-power scenarios can effectively improve the throughput and energy efficiency of cognitive networks.

Key words: simultaneous information and power transfer, cognitive relay network, spectrum sensing, throughput, energy efficiency

中图分类号:

TN929.5

李新颖, 郝浩, 黄海燕. 基于信能同传的认知中继网络性能研究[J]. 计算机工程, 2020, 46(11): 201-206,213.

LI Xinying, HAO Hao, HUANG Haiyan. Research on Cognitive Relay Network Performance Based on Simultaneous Information and Power Transfer[J]. Computer Engineering, 2020, 46(11): 201-206,213.

https://www.ecice06.com/CN/Y2020/V46/I11/201

图/表 7

20201124090330

20201124090337

20201124090341

20201124090345

20201124090347

20201124090351

20201124090354

参考文献

[1] QU Zhaowei,SONG Qizhu,YIN Sixing.Optimal spectrum sensing in energy harvesting cognitive radio systems[J].China Communications,2014,11(5):83-90.
[2] YIN Sixing,ZHANG Erqing,QU Zhaowei,et al.Optimal cooperation strategy in cognitive radio systems with energy harvesting[J].IEEE Transactions on Wireless Communications,2014,13(9):4693-4707.
[3] NASIR A A,ZHOU X Y,DURRANI S,et al.Relaying protocols for wireless energy harvesting and information processing[J].IEEE Transactions on Wireless Communi-cations,2013,12(7):3622-3636.
[4] NASIR A A,ZHOU X Y,DURRANI S,et al.Throughput and ergodic capacity of wireless energy harvesting based DF relaying network[C]//Proceedings of 2014 IEEE International Conference on Communications.Washington D.C.,USA:IEEE Press,2014:4066-4071.
[5] JU H,ZHANG R.Throughput maximization in wireless powered communication networks[J].IEEE Transactions on Wireless Communications,2014,13(1):418-428.
[6] MIRIDAKIS N I,TSIFTSIS T A.A new interweave cognitive radio scheme for out-band energy harvesting systems[J].IEEE Access,2018,6(1):72225-72232.
[7] FENG Gang,QIN Xizhong,JIA Zhenhong,et al.Research on energy efficiency of wireless powered communication network in cognitive radio environment[J].Computer Engineering,2019,45(3):142-147.(in Chinese) 冯刚,覃锡忠,贾振红,等.认知无线电环境下无线能量通信网能效研究[J].计算机工程,2019,45(3):142-147.
[8] PRADHA J J,KALAMKAR S S,BANERJEE A.On information and energy cooperation in energy harvesting cognitive radio[C]//Proceedings of 2015 IEEE Annual International Symposium on Personal,Indoor,and Mobile Radio Communications.Washington D.C.,USA:IEEE Press,2015:943-948.
[9] SHIN J,KIM D.Simultaneous wireless information and power transfer for cognitive radio systems with average energy harvesting constraint[C]//Proceedings of 2015 Annual IEEE Consumer Communications and Networking Conference.Washington D.C.,USA:IEEE Press,2015:156-157.
[10] QU Hua,ZHAO Yongqiang,ZHAO Jihong,et al.Energy efficient resource allocation in cooperative cognitive radio networks[J].Journal of Electronics and Information Technology,2018,40(5):1024-1030.(in Chinese) 曲桦,赵永强,赵季红,等.合作认知无线网络中能效最优资源分配[J].电子与信息学报,2018,40(5):1024-1030.
[11] SONG Zhiqun,ZHANG Zhongzhao,LIU Xin,et al.Simultaneous cooperative spectrum sensing and wireless power transfer in multi-antenna cognitive radio[J].Physical Communication,2018,29(2):78-85.
[12] LU Xiaomei,XU Wenjun,LI Shengyu,et al.Simultaneous information and power transfer for relay-assisted cognitive radio networks[C]//Proceedings of 2014 IEEE International Conference on Communications Workshops.Washington D.C.,USA:IEEE Press,2014:331-336.
[13] XU Jisheng,ZENG Fanzai,LI Kang,et al.Performance analysis of two-way relay cooperation underlay cognitive radio networks based on WIPT[J].Journal on Com-munications,2019,40(2):129-136.(in Chinese) 徐纪胜,曾凡仔,李康,等.基于WIPT的两路中继协作underlay认知无线电的性能分析[J].通信学报,2019,40(2):129-136.
[14] YANG Zheng,DING Zhiguo,FAN Pingzhi,et al.Outage performance of cognitive relay networks with wireless information and power transfer[J].IEEE Transactions on Vehicular Technology,2016,65(5):3828-3833.
[15] YU Yuehao,YANG Zheng,WU Yi,et al.Outage performance of NOMA in cooperative cognitive radio networks with SWIPT[J].IEEE Access,2019,7(8):117308-117317.
[16] YANG Zheng,DING Zhiguo,FAN Pingzhi,et al.The impact of power allocation on cooperative non-orthogonal multiple access networks with SWIPT[J].IEEE Transactions on Wireless Communications,2017,16(7):4332-4343.
[17] ZHANG Zhi,LU Yimin,HUANG Yuzhen.Simultaneous wireless information and power transfer for dynamic cooperative spectrum sharing networks[J].IEEE Access,2019,7(1):823-834.
[18] NASIR A A,ZHOU X Y,DURRANI S,et al.Wireless-powered relays in cooperative communications:time-switching relaying protocols and throughput analysis[J].IEEE Transactions on Communications,2015,63(5):1607-1622.
[19] ZOU Y L,CHAMPAGNE B,ZHU W P,et al.Relay-selection improves the security-reliability trade-off in cognitive radio systems[J].IEEE Transactions on Communications,2015,63(1):215-228.
[20] GRADSHTEYN I S,RYZHIK I M.Table of integrals,series,and products[EB/OL].[2019-08-22].https://www.science-direct.com/book/9780123736376/table-of-integrals-series-and-products.

选择文件类型/文献管理软件名称

选择包含的内容