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Pilot Periodicity Based OFDM Signal Detection Method for Cognitive Radio System Sung Hwan SOHN Ning HAN Guanbo ZHENG Jae Moung KIM Publication IEICE TRANSACTIONS on Communications Vol.E91-B No.5 pp.1644-1647 Publication Date: 2008/05/01 Online ISSN: 1745-1345 DOI: 10.1093/ietcom/e91-b.5.1644 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Wireless Communication Technologies Keyword: cognitive radio, OFDM detection, cyclostationary detection, spectral correlation detection, Full Text: PDF>>
Summary: Cognitive Radio is an advanced enabling technology for efficient utilization of vacant spectrum due to its ability to sense the spectrum environment. Various detection methods have been proposed for spectrum sensing, which is the key function in implementing cognitive radio. However most of the existing methods put their interests in detecting TV signal and wireless microphone signals. In this paper, we explore the periodicity of the equally spaced pilot subcarriers in OFDM signal. Simulations in various fading environments show that the proposed cyclostationarity based detection method works well for OFDM signal. | |||||
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