Research Article
Double-Threshold Cooperative Detection for Cognitive Radio Based on Weighing
@INPROCEEDINGS{10.1109/ChinaCom.2011.6158149, author={Xin Liu and Chengwen Zhang and Xuezhi Tan}, title={Double-Threshold Cooperative Detection for Cognitive Radio Based on Weighing}, proceedings={6th International ICST Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2012}, month={3}, keywords={cognitive radio; energy detection; cooperative detection; energy combining}, doi={10.1109/ChinaCom.2011.6158149} }- Xin Liu
Chengwen Zhang
Xuezhi Tan
Year: 2012
Double-Threshold Cooperative Detection for Cognitive Radio Based on Weighing
CHINACOM
IEEE
DOI: 10.1109/ChinaCom.2011.6158149
Abstract
In cognitive radio (CR), single-threshold detection is sensitive to the noise power. In this paper, a cooperative detection algorithm with double-threshold and energy statistic weighing is proposed in order to improve sensing performance of the global detection at the coordinator. Two thresholds which are decided by the restriction probability are adopted to improve the performance of the cooperative detection, and energy combining based on weighing is used to improve the performance of the detection in confusion area. Simulation shows that the proposed scheme outperforms cooperative detection with single-threshold and single detection with single-threshold in detection accuracy.
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