基于信任度的双门限协作频谱感知算法

张学军; 鲁友; 田峰; 孙知信; 成谢锋

doi:10.7498/aps.63.078401

摘要

提出了一种兼顾认知无线电系统可靠性和低负载的基于信任度的双门限协作频谱检测算法.系统首先使满足双门限要求的认知节点参与协作感知，当满足双门限要求的认知节点数目不足时，增加满足信任度参数要求的认知节点参与协作感知.融合中心存储了认知节点的检测记录，并以此为局部检测结果设置融合权重.理论分析和仿真结果表明，该算法所需传输的感知参数减少了，占用的信道带宽降低.同时，由于不可靠用户的减少，算法的检测性能进一步提高了.此外，算法通过调整参数nt 使系统适应于不同类型的无线业务，具有一定的灵活性.

关键词:

Abstract

This paper presents a double-threshold cooperative spectrum sensing algorithm which is based on trust and satisfies both reliability and efficiency. The cognitive nodes that satisfy the request of double-threshold have the priority to participate in cooperative sensing and that satisfy the requirement of trust parameters may participate in cooperative sensing if only the number of the former is smaller than a preset value. The fusion center stores the sensing record of each cognitive node and sets the fusion weights according to the partial detected results. Theoretical analysis and simulation show that the bandwidth required for transmitting the sensing parameters decreases, and the detection performance improves because the unreliable users are reduced. Additionally, the algorithm can be made to adapt to different wireless service by adjusting the parameter nt.

Keywords:

作者及机构信息

1.
南京邮电大学宽带无线通信与传感网技术教育部重点实验室, 南京 210003;

2.
南京邮电大学电子科学与工程学院, 南京 210003

基金项目: 国家自然科学基金（批准号：61001077，61170276，61271334）资助的课题.

Authors and contacts

1.
Key Laboratory of Broadband Wireless Communication and Sensor Network Technology of Ministry of Education, Nanjing University of Posts and Telecommunications, Nanjing 210003, China;

2.
School of Electronic Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China

Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 61001077, 61170276, 61271334).

参考文献

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施引文献

[1]	FCC 2003 FCC Document ET Docket 3 108
[2]	Mitola J, Maguire G Q 1999 IEEE Trans.Personal Communications. 6 13
[3]	Wang B B, Liu K J R 2011 IEEE Journal of Selected Topics in Signal Processing. 5 5
[4]	Omar A M, Aly 2013 Saudi International Electronics, Communications and Photonics Conference, Riyadh, April 27-30, 2013 p1
[5]	Liu Y, Peng Q C, Shao H Z, Peng Q H, Wang L 2013 Acta Phys. Sin. 62 078406 (in Chinese)[刘允, 彭启琮, 邵怀宗, 彭启航, 王玲2013 62 078406]
[6]	Zu Y X, Zhou J, Zeng C C 2010 Chin. Phys. B 19 119501
[7]	Zu Y X, Zhou J 2012 Chin. Phys. B 21 019501
[8]	Cabric D, Mishra S M, Brodersen R W 2004 Conference Record of the Thirty-Eighth Asilomar Conference on Signals, Systems and Computers, Asilomar, Nov.7-10, 2004 p772
[9]	Zheng S L, Lou C Y, Yang X N 2010 Acta Phys. Sin. 59 3611 (in Chinese) [郑仕链, 楼才义, 杨小牛2010 59 3611]
[10]	Liu S Q, Hu B J Wang X Y 2012 IEEE Trans. Communications Letters. 16 1096
[11]	Yue W J, Chen Z, Zheng B Y, Wang L 2012 Journal of Electronics & Information Technology 5 1208 (in Chinese)[岳文静, 陈志, 郑宝玉2012 电子与信息学报5 1208]
[12]	Liu X, Zhang C W, Tan X Z 2011 The 6th International ICST Conference on Communications and Networking in China, China, Aug. 11-19, 2011 p205
[13]	Liu H Q, Wang S B, Li F, Zhan S W 2013 The 5th International Conference on Intelligent Networking and Collaborative Systems, China, Sept.9-11, 2013 p629
[14]	Xie S J, Shen L F 2012 2012 International Conference on Wireless Communications & Signal Processing, Huangshan, Oct.25-27, 2012 p1
[15]	Liang Y C, Zeng Y H, Peh E C Y, Hoang A T 2008 IEEE Trans. Wireless Communications. 7 1326
[16]	Ding H Q, Yang J W, Zhao Z Y 2010 Journal of Xidian University 37 665 (in Chinese) [丁汉青, 杨家玮, 赵志远 2010 西安电子科技大学学报37 665]
[17]	Wei Z, Mallik R K, Letaief K B 2009 IEEE Trans. Wireless Communications. 8 5761
[18]	Sun C H, Zhang W, Letaief K B 2007 IEEE Wireless Communications and Networking Conference, Kowloon, March 11-15, 2007 p1
[19]	Cheng X F, Zhang Z 2013 Acta Phys. Sin. 62 168701 (in Chinese)[成谢锋, 张正2013 62 168701]

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