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Spectrum Sensing in Dual Polarized Fading Channels for Cognitive SatComs
Sharma, Shree Krishna; Chatzinotas, Symeon; Ottersten, Björn
2012In Proceedings of IEEE Globecom Conference 2012
Peer reviewed
 

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Keywords :
Sensing Efficiency; Energy Detection; Dual Polarized Channel; Cross Polar Discrimination
Abstract :
[en] Next generation networks are moving towards the convergence of mobile, fixed and broadcasting services in one standard platform, which requires the co-existence of satellite and terrestrial networks in the same spectrum. This framework has motivated the concept of cognitive Satellite Communication (SatComs). In this aspect, the problem of exploiting Spectrum Sensing (SS) techniques for a dual polarized fading channel is considered. In this paper, the performance of Energy Detection (ED) technique is evaluated in the context of a co-existence scenario of a satellite and a terrestrial link. Diversity combining techniques such as Equal Gain Combining (EGC) and Selection Combining (SC) are considered to enhance the SS efficiency. Furthermore, analytical expressions for probability of detection (Pd) and probability of false alarm (Pf ) are presented for these techniques in the considered fading channel and the sensing performance is studied through analytical and simulation results. Moreover, the effect of Cross Polar Discrimination (XPD) on the sensing performance is presented and it is shown that SS efficiency improves for low XPD.
Disciplines :
Electrical & electronics engineering
Identifiers :
UNILU:UL-CONFERENCE-2012-373
Author, co-author :
Sharma, Shree Krishna ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Chatzinotas, Symeon  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Ottersten, Björn ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
External co-authors :
no
Language :
English
Title :
Spectrum Sensing in Dual Polarized Fading Channels for Cognitive SatComs
Publication date :
December 2012
Event name :
IEEE Globecom Conference 2012
Event place :
Anaheim, United States - California
Event date :
December 2012
Audience :
International
Main work title :
Proceedings of IEEE Globecom Conference 2012
Publisher :
IEEE
Pages :
3426-3431
Peer reviewed :
Peer reviewed
Available on ORBilu :
since 24 June 2013

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