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Improving Robustness of Cyclostationary Detectors to Cyclic Frequency Mismatch Using Slepian Basis
Sharma, Shree Krishna; Bogale, Tadilo Endeshaw; Chatzinotas, Symeon et al.
2015In Proceedings of IEEE PIMRC 2015
Peer reviewed
 

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Keywords :
Cyclostationary detector; Cyclic frequency mismatch; Slepian basis; Detector robustness; Cognitive radio; Spectrum sensing
Abstract :
[en] Spectrum Sensing (SS) is one of the fundamental mechanisms required by a Cognitive Radio (CR). Among several SS techniques, cyclostationary feature detection is considered as an important technique due to its robustness against noise variance uncertainty and its capability to distinguish among different systems on the basis of their cyclostationary features. However, one of the main limitations of this detector in practical scenarios is its performance degradation in the presence of cyclic frequency mismatch, which mainly arises due to the lack of knowledge about the transmitter clock/oscillator errors at the detector. In this context, this paper proposes a novel solution to address the cyclic frequency mismatch problem utilizing the Slepian basis expansion instead of the widely used Fourier basis expansion. It is shown that the proposed approach captures the deviation in the cyclic frequency caused by the aforementioned imperfections and hence provides a significant improvement in the sensing performance in the presence of cyclic frequency mismatch.
Disciplines :
Electrical & electronics engineering
Electrical & electronics engineering
Author, co-author :
Sharma, Shree Krishna ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Bogale, Tadilo Endeshaw;  INRS, Universite du Quebec, Montreal, QC, Canada
Chatzinotas, Symeon  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Le, Long Bao;  INRS, Universite du Quebec, Montreal, QC, Canada
Wang, Xianbin;  University of Western Ontario, London, ON, Canada
Ottersten, Björn ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
External co-authors :
yes
Language :
English
Title :
Improving Robustness of Cyclostationary Detectors to Cyclic Frequency Mismatch Using Slepian Basis
Publication date :
September 2015
Event name :
IEEE PIMRC 2015
Event organizer :
IEEE
Event date :
30-08-2015 to 02-09-2015
Audience :
International
Main work title :
Proceedings of IEEE PIMRC 2015
Peer reviewed :
Peer reviewed
Available on ORBilu :
since 21 October 2015

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