Variable threshold energy detection algorithm based on trust degree

Jie XIAO; Yuebin CHEN; Chutian CHEN; Ting ZHENG; Jiwu QIAN

doi:10.11959/j.issn.1000−0801.2018203

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Variable threshold energy detection algorithm based on trust degree

research and development | 更新时间：2024-06-05

- Variable threshold energy detection algorithm based on trust degree
- Telecommunications Science Vol. 34, Issue 8, Pages: 129-135(2018)
- 作者机构：
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- DOI：10.11959/j.issn.1000−0801.2018203
  CLC： TN925
- Published Online：2018-08，
  
  Published：20 August 2018
- 稿件说明：
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Jie XIAO, Yuebin CHEN, Chutian CHEN, et al. Variable threshold energy detection algorithm based on trust degree[J]. Telecommunications science, 2018, 34(8): 129-135.
DOI：

Jie XIAO, Yuebin CHEN, Chutian CHEN, et al. Variable threshold energy detection algorithm based on trust degree[J]. Telecommunications science, 2018, 34(8): 129-135. DOI： 10.11959/j.issn.1000−0801.2018203.

摘要

针对随机的概率式频谱感知数据篡改（spectrum sensing data falsification，SSDF）攻击，提出基于信任度的可变门限能量检测算法。首先比较实际融合值与融合中心上、下边界值的关系，更新可变门限，且通过系统给定的虚警概率和漏检概率确定上、下边界值；其次采用基于正确感知次数和总感知次数比值确定信任值的软融合方法。仿真结果表明，与传统固定门限相比，算法抵御攻击的同时不仅能够降低虚警概率和漏检概率，同时可以提高系统检测概率。

Abstract

Aiming at stochastic probabilistic SSDF attacks

a variable threshold energy detection algorithm based on trust degree was proposed.Firstly

the variable threshold was updated by comparing the actual fusion value with the upper and lower boundary values of the fusion center.The upper and lower boundary values were determined through the given false alarm probability andmissed probability.Secondly

a soft fusionmethod was used based on the ratio of correct perception times and the total number of times to update the trust value.Simulation results show that

compared with the traditional fixed threshold

the proposed algorithm can not only reduce the false alarm andmissed detection probability

but also improve the detection probability of the system.

关键词

Keywords

references

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