Double-Threshold Cooperative Detection for Cognitive Radio Based on Weighing

Xin Liu; Chengwen Zhang; Xuezhi Tan

6th International ICST Conference on Communications and Networking in China

Research Article

Double-Threshold Cooperative Detection for Cognitive Radio Based on Weighing

Cite: BibTeX Plain Text

@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

Xin Liu¹^,*, Chengwen Zhang¹, Xuezhi Tan¹

1: Harbin Institute of Technology

*Contact email: liuxinstar1984@sohu.com

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.

Keywords: cognitive radio; energy detection; cooperative detection; energy combining

Published: 2012-03-27
Publisher: IEEE

: http://dx.doi.org/10.1109/ChinaCom.2011.6158149