Energy efficient cooperative spectrum sensing algorithm in cognitive wireless sensor networks

被引：0
作者：
Yu, Gui-Cai [1 ]
Long, Cheng-Zhi [1 ]
Xiang, Man-Tian [1 ]
机构：
[1] Faculty of Information Engineering, Nanchang University, Nanchang
来源：
Tongxin Xuebao/Journal on Communications | 2015年 / 36卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Cognitive wireless sensor networks; Cooperative spectrum sensing; Detection probability; Detection threshold; Energy consumption;
D O I：
10.11959/j.issn.1000-436x.2015058
中图分类号：
学科分类号：
摘要：
A novel energy-efficient scheme of cooperative spectrum sensing in cognitive wireless sensor networks is proposed. Firstly, in order to reduce energy consumption of distributed sensor nodes, and assumed that instantaneous SNR and average SNR for each node is available. The mathematical model of spectrum sensing nodes energy consumption and optimum detection threshold are analyzed. Then, the theory of sensing node selection and decision threshold setting, combined an effective cooperative spectrum sensing scheme based on decision nodes selection is researched. The analysis and simulation results show that the proposed algorithm can effectively reduce total energy consumption in cognitive sensor networks, improve energy efficiency. ©, 2015, Tongxin Xuebao/Journal on Communications. All right reserved.
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页数：11
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