Secure Cooperative Spectrum Sensing based on the Distance between Bodies of Evidence

• 作者: Xiwen Tang Yanjun Hu Yi Wang Yingguan Wang
• 来源期刊: 通讯、网络与系统学国际期刊(英文)
• 学科: 工学
• 关键词: COGNITIVE Radio Spectrum SENSING Multiple Thresholds Energy Detection EVIDENCE Theory
• 年，卷（期）: 2012,（1）
• 页码范围: 66-71
• 页数: 6页
• 分类号: TN92

摘要

In cognitive radio (CR) networks, unlicensed secondary users need to conduct spectrum sensing to gain access to a licensed spectrum band. And cooperation among CR users will solve the problems caused by multipath fading and shadowing. In this paper, we propose a multi-threshold method at local nodes to cope with noises of great uncertainty. Functions of distance between bodies of evidence are used at fusion centre to make synthetic judgment. To guarantee security which is an essential component for basic network functions, we will take selfish nodes into account which try to occupy channels exclusively. The proposed technique has shown better performance than conventional algorithms without increase the system overhead.