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    National Tsing Hua University Institutional Repository > 電機資訊學院 > 電機工程學系 > 期刊論文 >  Energy-Saving Cooperative Spectrum Sensing Processor for Cognitive Radio System


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/71166


    Title: Energy-Saving Cooperative Spectrum Sensing Processor for Cognitive Radio System
    Authors: Wen-Bin Chien;Chih-Kai Yang;Yuan-Hao Huang
    教師: 黃元豪
    Date: 2011
    Publisher: Institute of Electrical and Electronics Engineers
    Relation: Circuits and Systems I: Regular Papers, IEEE Transactions on, Institute of Electrical and Electronics Engineers, Volume 58, Issue 4, April 2011, Pages 711 - 723
    Keywords: Energy-Saving
    Cognitive Radio System
    Abstract: Cooperative spectrum sensing has recently become an important research topic for cognitive radio systems because it solves the hidden terminal problem in single-user spectrum sensing. However, idle cognitive users must consume massive spectrum sensing energy for one operating cognitive user. This characteristic reduces the attraction of the cooperative spectrum sensing technique in practical cognitive radio systems. Therefore, this paper develops a partial spectrum sensing algorithm with decision result prediction (DRP) and decision result modification (DRM) techniques to reduce the cooperative spectrum sensing energy. This study also designs and implements an energy-saving spectrum sensing processor for cognitive radio systems. The proposed cooperative spectrum sensing chip reduces energy consumption by about 64% for one fast Fourier transform (FFT) spectrum sensing calculation. For any given specified spectrum detection time, the proposed chip could also improve the detection performance compared to the traditional FFT spectrum sensing.
    Relation Link: http://www.ieee.org/
    URI: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/71166
    Appears in Collections:[電機工程學系] 期刊論文

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