scholarly journals Energy-aware cluster based cooperative spectrum sensing for cognitive radio sensor networks

2014 ◽  
Author(s):  
I. Mustapha ◽  
Borhanuddin M. Ali ◽  
A. Sali ◽  
Mohd F. A. Rasid ◽  
H. Mohamad
Keyword(s):  
Cognitive Radio ◽  
Sensor Networks ◽  
Spectrum Sensing ◽  
Cooperative Spectrum Sensing ◽  
Energy Aware ◽  
Cognitive Radio Sensor Networks

Joint Spectrum Sensing and Data Transmission Optimization for Energy Efficiency in Cognitive Radio Sensor Networks: A Dynamic Cooperative Method

2015 ◽  
Vol 19 (2) ◽  
pp. 197-204 ◽  
Author(s):  
Yi Li ◽  
◽  
Jun Peng ◽  
Fu Jiang ◽  
Kaiyang Liu ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Cognitive Radio ◽  
Sensor Networks ◽  
Spectrum Sensing ◽  
Data Transmission ◽  
Cooperative Spectrum Sensing ◽  
Optimization Method ◽  
Joint Optimization ◽  
Transmission Scheme ◽  
Cognitive Radio Sensor Networks

To address the inherent energy constraint in cognitive radio sensor networks, a novel joint optimization method of spectrum sensing and data transmission for energy efficiency is investigated in this paper. To begin with, a cooperative spectrum sensing scheme based on dynamic censoring is employed to shorten sensing time and save unnecessary spectrum sensing energy. Then to jointly optimize the energy efficiency, the distortion constrained probabilistic transmission scheme is utilized. Afterwards the sensing threshold solving issue can be formulated as a nonlinear minmax optimization problem with the detection probability and false alarm probability constraints. Solving by the Matlab software with the free OPTI toolbox, simulation results demonstrate that significant energy can be saved via the the proposed joint optimization method in various mobile cloud scenarios.

scholarly journals A Cooperative Spectrum Sensing Scheme Based on Extension Theory for Cognitive Radio Sensor Networks

2014 ◽  
Vol 8 (1) ◽  
pp. 64-70
Author(s):  
Sheng Ouyang ◽  
Pin Wan ◽  
Yonghua Wang ◽  
Liyuan Wang ◽  
Qinruo Wang
Keyword(s):  
Cognitive Radio ◽  
Sensor Networks ◽  
Spectrum Sensing ◽  
Cooperative Spectrum Sensing ◽  
Extension Theory ◽  
Fusion Center ◽  
Final Decision ◽  
Trust Evaluation ◽  
Cognitive Radio Sensor Networks ◽  
Dependent Function

This paper proposes a cooperative censoring spectrum sensing scheme based on dependent function of extension theory for Cognitive Radio Sensor Networks (CRSN). The scheme uses the dependent function of Extension theory to identify the presence or absence of the licensed user's (LU) signal, and then calculate the related degree through dependent function to identify the initial test results of licensed users, and then send these results to the fusion center. Use a trust evaluation scheme based on noise jamming and channel attenuation for each node, and then this trust evaluation result of each node is sent to the fusion center. The fusion center makes the final decision by the K-M rule. Simulation results show that the proposed scheme could improve the detect probability effectively.

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