Energy-Efficient Spectrum Sensing Strategy in Cognitive Radio Networks

被引：20

作者：

Huang, Dongyan ^{[1
]}

Kang, Guixia ^{[1
]}

Wang, Bo ^{[1
]}

Tian, Hui ^{[1
]}

机构：

[1] Beijing Univ Posts & Telecommun, Minist Educ, Key Lab Universal Wireless Commun, Beijing 100876, Peoples R China

来源：

IEEE COMMUNICATIONS LETTERS | 2013年 / 17卷 / 05期

关键词：

Cognitive radio; energy-efficiency; cooperative/coordinated spectrum sensing;

D O I：

10.1109/LCOMM.2013.031913.130131

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

In this letter, a novel metric is proposed to evaluate the average sensing energy-efficiency of cognitive radio (CR) networks. A theorem as well as the related closed-form expression for determining the optimum number of cooperative sensing cognitive terminals is provided to optimize the proposed metric. According to the theorem, we propose an efficient terminal-assignment strategy for coordinated spectrum sensing. Simulation results show that the proposed strategy can significantly improve the overall average sensing energy efficiency of the CR system.

引用

页码：928 / 931

页数：4

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