Reference : Sensing-Throughput Tradeoff for Interweave Cognitive Radio System: A Deployment-Centr...
Scientific journals : Article
Engineering, computing & technology : Electrical & electronics engineering
http://hdl.handle.net/10993/24528
Sensing-Throughput Tradeoff for Interweave Cognitive Radio System: A Deployment-Centric Viewpoint
English
Kaushik, Ankit mailto [Karlsruhe Institute of Technology (KIT)]
Sharma, Shree Krishna mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Chatzinotas, Symeon mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Ottersten, Björn mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Jondral, Friedrich K. mailto [Karlsruhe Institute of Technology (KIT), Germany]
Feb-2016
IEEE Transactions on Wireless Communications
Institute of Electrical and Electronics Engineers
Yes (verified by ORBilu)
International
1536-1276
1558-2248
New York
NY
[en] Cognitive radio ; Interweave system ; Sensing-throughput tradeoff ; Spectrum sensing ; Channel estimation
[en] Secondary access to the licensed spectrum is viable only if the interference is avoided at the primary system. In this regard, different paradigms have been conceptualized in
the existing literature. Among these, interweave systems (ISs) that employ spectrum sensing have been widely investigated. Baseline models investigated in the literature characterize the
performance of the IS in terms of a sensing-throughput tradeoff, however, this characterization assumes perfect knowledge of the involved channels at the secondary transmitter, which is
unavailable in practice. Motivated by this fact, we establish a novel approach that incorporates channel estimation in the system model, and consequently investigate the impact of imperfect
channel knowledge on the performance of the IS. More particularly, the variation induced in the detection probability affects the detector’s performance at the secondary transmitter,
which may result in severe interference at the primary receivers. In this view, we propose to employ average and outage constraints on the detection probability, in order to capture the performance of the IS. Our analysis reveals that with an appropriate choice of the estimation time determined by the proposed approach, the performance degradation of the IS can be effectively controlled, and subsequently the achievable secondary throughput can be
significantly enhanced.
Researchers ; Students
http://hdl.handle.net/10993/24528
10.1109/TWC.2016.2525986
FnR ; FNR5785257 > Bjorn Ottersten > SeMIGod > SpEctrum Management and Interference mitiGation in cognitive raDio satellite networks > 01/04/2014 > 31/03/2017 > 2013

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