Energy detection techniques for signals subject to arbitrary channelizations

This paper considers the problem, in the context of cognitive radio systems, of identifying the spectral occupancy of a signal, where its bandwidth is only a subset of the total bandwidth of interest. It is argued that traditional detection approaches need to be extended to cater for arbitrary radio...

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Bibliographic Details
Published in2012 International Symposium on Communications and Information Technologies pp. 274 - 279
Main Authors Quang Thai, Reisenfeld, S.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2012
Subjects
Bandwidth
Cognitive radio
Detectors
Frequency estimation
Gold
OFDM
signal analysis
signal detection
spectral analysis
spectral shape
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Summary:This paper considers the problem, in the context of cognitive radio systems, of identifying the spectral occupancy of a signal, where its bandwidth is only a subset of the total bandwidth of interest. It is argued that traditional detection approaches need to be extended to cater for arbitrary radio environments that are not channelized in a way that is known in advance. An extended energy detection model is introduced, where upon deciding that the signal is present, it also makes a decision on its spectral boundaries. A simple peak detection algorithm is described which allows these boundaries to be identified, and whose performance under various scenarios is observed empirically.
ISBN:9781467311564
1467311561
DOI:10.1109/ISCIT.2012.6380905