Wireless Energy-Harvesting Cognitive Radio with Feature Detectors

• Yan Gao,
• Yunfei Chen,
• Zhibin Xie,
• Guobing Hu,

Vol. 10, No. 10, October 30, 2016
10.3837/tiis.2016.10.001, Download Paper (Free):

• cognitive radio
• energy-harvesting
• Performance Analysis
• spectrum sensing
• WIreless

Abstract

The performances of two commonly used feature detectors for wireless energy-harvesting cognitive radio systems are compared with the energy detector under energy causality and collision constraints. The optimal sensing duration is obtained by analyzing the effect of the detection threshold on the average throughput and collision probability. Numerical examples show that the covariance detector has the optimal sensing duration depending on an appropriate choice of the detection threshold, but no optimal sensing duration exists for the ratio of average energy to minimum eigenvalue detector.

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