Paper Info
Title
Combined pre-detection and sleeping for energy-efficient spectrum sensing in cognitive radio networks.
Abstract
In this paper, we propose a cooperative spectrum sensing scheme including a combined pre-detection and sleeping policy. In the scheme, the designed pre-detection sub-phase is applied at the beginning of the detection of the presence of a primary user, where all sensing nodes are involved to improve the detection performance. The sleeping policy is applied for each sensing node respectively at the end of the pre-detection sub-phase and the beginning of the transmission of the local detection results, in order to decrease sensing energy consumption. We formulate the problem of minimizing the maximum average energy consumption per sensing node in Rayleigh fading channels, considering the constraints of the required global detection and false alarm probabilities and the tolerable interference caused to the primary user. Numerical results show that the scheme achieves significant energy saving as compared to a scheme that includes only a sleeping policy and does not consider pre-detection.
Year
DOI
Venue
2018
10.1016/j.jpdc.2017.12.013
Journal of Parallel and Distributed Computing
Keywords
Field
DocType
High performance communication,Cognitive radio,Spectrum sensing,Energy efficiency,Optimization
False alarm,Rayleigh fading,Computer science,Efficient energy use,Communication channel,Real-time computing,Interference (wave propagation),Energy consumption,Cognitive radio,Distributed computing
Journal
Volume
ISSN
Citations 
114
0743-7315
0
PageRank 
References 
Authors
0.34
20
4
Name
Order
Citations
PageRank
Yuan Gao100.68
Zhixiang Deng210.68
Dongmin Choi34112.25
Chang Choi426139.04