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Research on Cyclostationary Signature Detection Algorithm of Cognitive Radio

Author: YangJie
Tutor: LiShiJu
School: Zhejiang University
Course: Information and Communication Engineering
Keywords: Cognitive radio Spectrum sensing Cyclostationary detection OFDM
CLC: TN925
Type: Master's thesis
Year: 2010
Downloads: 141
Quote: 0
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Abstract


Cognitive radio technology is the existing spectrum allocation policy , effective means to overcome the shortage of spectrum resources , spectrum sensing is the premise of this technology . The cyclostationary detection basic line of research , by analyzing the received signal is cyclostationary characteristics to distinguish the use of the spectrum in the current state . This article frequency to Dandawate , domain asymptotically optimal the χ2 detection of law based on a specific frequency detection method under the condition of some prior information , the method still has a good detection performance in low SNR conditions . Also describes the the cyclostationary characteristic values ??embedded in the OFDM signal low complexity technology, analyzes embedded single cyclostationary feature value and after the value of the plurality of Cyclostationary detection performance, to the expense of a certain loss of data transmission for exchange in the complex the environmental good signal detection capability , through simulation results show that the proposed method in low signal-to-noise ratio and multipath Rayleigh fading environment has a high probability of detection of OFDM signal embedded cyclostationary eigenvalue .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Radio relay communications,microwave communications
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