An Improved Cyclic Spectrum Detection Algorithm in CR Systems

doi:10.13190/jbupt.200902.89.yugc

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2009, Vol. 32 ›› Issue (2): 89-92.doi: 10.13190/jbupt.200902.89.yugc

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An Improved Cyclic Spectrum Detection Algorithm in CR Systems

Received:2008-10-08 Revised:2009-01-12 Online:2009-04-28 Published:2009-04-28

Abstract

Abstract:

A new orthogonal frequency division multiplexing (OFDM) cyclic spectrum detection scheme is presented based on intended signature. Compared with original schemes, the proposed scheme will improve the detection performance under condition of a lower signalnoiseratio and unincreased detection duration. This scheme enhances the robust of against noise uncertainty effectively，and gets a robustly result of detecting weak signals and improves the detection performance.

Key words: Cognitive radio, spectrum detection, cyclostationarity, cyclic spectrum.

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An Improved Cyclic Spectrum Detection Algorithm in CR Systems

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