Green Cooperative Sensing Scheme in Heterogeneous Networks

• Lifei Shen,
• Jian Liu,
• Xinxin Tan,
• Lei Wang,

Vol. 12, No. 2, February 27, 2018
10.3837/tiis.2018.02.001, Download Paper (Free):

• Geen communication
• Heterogeneous Network
• Cooperative sensing
• overhead saving
• cognitive radio

Abstract

Cognitive radio technology is still the key technology of future mobile communication systems. Previous studies have focused on improving spectrum utilization and less energy consumption. In this paper, we propose an Overhead Reduced Scheme (ORS) for green cooperative spectrum sensing. Compared to traditional cooperative sensing scheme, ORS scheme divides the sensing time into three time slots and selects the best multi-mode user to report decisions. In consideration of reporting channel deviation, we derive closed-form expressions for detection probability and false alarm probability of ORS scheme based on Rayleigh fading channel. Simulation results show that ORS scheme can improve the perception accuracy while reducing the perceived delay and energy consumption in the process of perception, so as to realize the green communication.

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