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Double-threshold cooperative spectrum sensing for cognitive radio based on trust

Zhang Xue-Jun Lu You Tian Feng Sun Zhi-Xin Cheng Xie-Feng

Double-threshold cooperative spectrum sensing for cognitive radio based on trust

Zhang Xue-Jun, Lu You, Tian Feng, Sun Zhi-Xin, Cheng Xie-Feng
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  • Abstract views:  931
  • PDF Downloads:  585
  • Cited By: 0
Publishing process
  • Received Date:  14 November 2013
  • Accepted Date:  24 December 2013
  • Published Online:  05 April 2014

Double-threshold cooperative spectrum sensing for cognitive radio based on trust

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

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.

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