Reference : Exploiting Polarization for Spectrum Sensing in Cognitive SatComs

	Document type :	Scientific congresses, symposiums and conference proceedings : Paper published in a book
	Discipline(s) :	Engineering, computing & technology : Computer science Engineering, computing & technology : Electrical & electronics engineering
	To cite this reference:	http://hdl.handle.net/10993/2809

Title :	Exploiting Polarization for Spectrum Sensing in Cognitive SatComs
Language :	English
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) > >]
Publication date :	Jun-2012
Main document title :	Proceedings of 7th International Conference on Cognitive Radio Oriented Wireless Networks
Peer reviewed :	Yes
On invitation :	No
Audience :	International
Event name :	CROWNCOM 2012
Event date :	18-20 June, 2012
Event place (city) :	Stockholm
Event country :	Sweden
Keywords :	[en] Probability of detection ; Sensing efficiency ; Energy detection ; Dual polarized antenna ; Polarization states
Abstract :	[en] Exploring new techniques for spectrum sensing (SS), which can detect the weak primary signals instantly, has been an important research challenge. In this paper, the problem of enhancing SS efficiency in cognitive SatComs has been considered. The analysis of different combining techniques has been carried out for SS using dual polarized antenna. Furthermore, polarization states of received signals are exploited and based on obtained polarization states, Optimum Polarization Based Combining (OPBC) technique has been used for carrying out SS in the satellite terminal. The sensing performance of OPBC technique has been compared to selection combining (SC), equal gain combining (EGC) and maximum ratio combining (MRC) techniques. The simulation results show that OPBC technique achieves a great improvement in sensing efficiency over other considered techniques at the expense of complexity in a dual polarized AWGN channel.
Target :	Researchers
Permalink :	http://hdl.handle.net/10993/2809

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