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Volume 31 Issue 11
Dec.  2010
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Yu Gui-cai, Luo Tao, Yue Guang-xin. Energy Detection Algorithm Investigation Based on Cooperative in Cognitive Radio Systems[J]. Journal of Electronics & Information Technology, 2009, 31(11): 2682-2686. doi: 10.3724/SP.J.1146.2008.01562
Citation: Yu Gui-cai, Luo Tao, Yue Guang-xin. Energy Detection Algorithm Investigation Based on Cooperative in Cognitive Radio Systems[J]. Journal of Electronics & Information Technology, 2009, 31(11): 2682-2686. doi: 10.3724/SP.J.1146.2008.01562

Energy Detection Algorithm Investigation Based on Cooperative in Cognitive Radio Systems

doi: 10.3724/SP.J.1146.2008.01562
  • Received Date: 2008-11-26
  • Rev Recd Date: 2009-05-25
  • Publish Date: 2009-11-19
  • In this paper, detection performance and detection sensitivity with detection duration and noise average power fluctuation in short time is investigated firstly. Performance accuracy and detection sensitivity drop quickly with noise average power fluctuation increasing and it is worse when signal-to-noise ratio lower. Considering the characteristic, a novel new energy detection algorithm based on cooperative is presented. Simulations show that the proposed scheme improves antagonism of noise average power fluctuation in short time and gets a good detection performance as long as increasing the number of cooperative detection users.
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  • Akyildiz I F, Won-Yeol L, and Mehmet C V, et al.. NeXtgeneration/dynamic spectrum access /cognitive radiowireless networks: A survey[J].Computer Networks.2006, 50(5):2127-2159[2]Akyildiz I F, Won-Yeol L, and Mehmet C V, et al.. A surveyon spectrum management in cognitive radio networks. IEEECommunications Magazine, 2008, 46(4): 40-48.[3]Ghasemi and Sousa E S. Collaborative spectrum sensing foropportunistic access in fading environments. In: IEEE Int.Symposium on Dynamic Spectrum Access Networks.Baltimore, USA, 2005: 131-136.[4]Mishra S M, Sahai A, and Broderson R W. Cooperativesensing among cognitive radios. In: Proc. ICC 2005, Istanbul,Turkey, 2006: 11-15.[5]Tandra R and Sahai A. SNR walls for signal detection[J].IEEEJournal of Selected Topics in Signal Processing.2008, 2(1):4-17[6]Kay S M. Fundamentals of statistical signal processing:detection theory. Englewood Cliffs: Prentice-Hall, 1998, 2:689-698.[7]Tandra R. Fundamental limits on detection in low SNR:[Masters dissertation]. University of California, Berkeley,2003: 30-55.[8]Cordeiro C, Ghosh M, and Cavalcanti D, et al.. Spectrumsensing for dynamic spectrum access of TV bands (InvitedPaper). In: ICST CrownCom Aug. 2007: 163-167.[9]Nosratinia A, Hunter T E, and Hedayat A. Cooperativecommunication in wireless networks. IEEE CommunicationsMagazine, 2004, 42(10): 74-80.[10]Jun M and Li Y(G). Soft Combination and Detection forCooperative Spectrum Sensing in Cognitive Radio Networks.IEEE GLOBECOM2007 proceedings, 2007: 3139-3143.
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