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Communication dans un congrès

Spectrum Sensing and Channel Estimation in Cognitive Radio

Azza Moawad 1, 2 Koffi-Clément Yao 2 Ali Mansour 3, 4 Roland Gautier 2
2 Lab-STICC_UBO_CACS_COM
IBNM - Institut Brestois du Numérique et des Mathématiques, Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance
3 Lab-STICC_ENSTAB_CACS_COM
Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance
4 Pôle STIC_IDM
ENSTA Bretagne - École Nationale Supérieure de Techniques Avancées Bretagne
Abstract : The detection of signal presence is a crucial job carried out through spectrum sensing in cognitive radio systems. A tradeoff between detection accuracy and detector complexity is tackled often in researches. Amongst different spectrum sensing techniques, conventional energy detection is widely used due to its simplicity of implementation, however, it is sensitivity to noise variation makes it unreliable in low signal-to-noise-ratio environments. This manuscript proposes the use of scattering-based detector for spectrum sensing in the context of cognitive radio to provide reliable signal detection. Through scattering transform, signal features are enhanced whereas noise variations effects are reduced which enhances the detection results. The proposed detector is tested for chirp and spread spectrum signals in additive white Gaussian noise channel. Performance evaluation is conducted through calculation of detection probability for several signal-to-noise ratio values. Through MonteCarlo simulations, the proposed detector proves reliability of detection as compared to energy detection which provides false detection decision when noise only considered for detection.
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https://hal.archives-ouvertes.fr/hal-01707087
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Soumis le : lundi 12 février 2018 - 15:05:17
Dernière modification le : mercredi 24 juin 2020 - 16:19:51
Archivage à long terme le : : dimanche 13 mai 2018 - 12:19:50

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  • HAL Id : hal-01707087, version 1

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Azza Moawad, Koffi-Clément Yao, Ali Mansour, Roland Gautier. Spectrum Sensing and Channel Estimation in Cognitive Radio. 2nd International conference on advanced technology and applied science (ICaTAS), Arab Academy for Science, and Technology and Maritime Transport, Sep 2017, Alexandria, Egypt. ⟨hal-01707087⟩

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