一种基于能量检测的协作式频谱感知算法

付彩梅; 李有明; 周桂莉; 余明宸; 童景文; 王旭芃

doi:10.11959/j.issn.1000-0801.2016232

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一种基于能量检测的协作式频谱感知算法

研究与开发 | 更新时间：2024-06-05

- 一种基于能量检测的协作式频谱感知算法
- A new cooperation spectrum sensing algorithm based on energy detection
- 电信科学 2016年32卷第9期页码：52-60
- 作者机构：
- 作者简介：
  
  [ "付彩梅(1990-)，女，宁波大学信息科学与工程学院硕士生，主要研究方向为认知无线电中的频谱检测技术。" ]
  [ "李有明(1963-)，男，宁波大学教授、博士生导师，主要研究方向为宽带通信、电力线通信、协作中继、认知无线电等。" ]
  [ "周桂莉(1992-)，女，宁波大学信息科学与工程学院硕士生，主要研究方向为水声通信系统中的资源分配。" ]
  [ "余明宸(1991-)，男，宁波大学信息科学与工程学院硕士生，主要研究方向为电力线通信系统脉冲干扰。" ]
  [ "童景文(1991-)，男，宁波大学信息科学与工程学院硕士生，主要研究方向为认知无线电中的频谱检测技术。" ]
  [ "王旭芃(1966-)，女，宁波大学工程师，主要从事信息检测工作。" ]
- 基金信息：
  
  国家自然科学基金资助项目;The National Natural Science Foundation of China(61571250);宁波市自然科学基金资助项目;The Natural Science Foundation of Ningbo of China(2015A610121)
- DOI：10.11959/j.issn.1000-0801.2016232
  中图分类号： TN911
- 网络出版日期：2016-09，
  
  纸质出版日期：2016-09-15
- 稿件说明：
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付彩梅, 李有明, 周桂莉, 等. 一种基于能量检测的协作式频谱感知算法[J]. 电信科学, 2016,32(9):52-60.

Caimei FU, Youming LI, Guili ZHOU, et al. A new cooperation spectrum sensing algorithm based on energy detection[J]. Telecommunications science, 2016, 32(9): 52-60.
付彩梅, 李有明, 周桂莉, 等. 一种基于能量检测的协作式频谱感知算法[J]. 电信科学, 2016,32(9):52-60. DOI： 10.11959/j.issn.1000-0801.2016232.

Caimei FU, Youming LI, Guili ZHOU, et al. A new cooperation spectrum sensing algorithm based on energy detection[J]. Telecommunications science, 2016, 32(9): 52-60. DOI： 10.11959/j.issn.1000-0801.2016232.

摘要

为提高认知无线电系统中频谱检测的可靠性，提出了一种基于能量检测的协作式频谱感知算法。利用授权用户的状态在相邻感知帧之间变化的概率小这一特性，通过将当前感知帧的能量值与相邻值相结合来判断授权用户状态，这样当授权用户使用授权频段时，所提算法能有效减小采样信号能量值骤减时发生误判的概率。另外给出了所提算法检测概率和虚警概率的闭式表达式。理论分析和仿真结果表明，所提算法比传统的协作式频谱检测算法检测性能好。

Abstract

To improve the reliability of spectrum sensing in cognitive radio system

a new cooperation spectrum sensing algorithm was proposed.In this algorithm

the property of the low probability between adjacent frames of the states change was used and then the decision was made by combing the energy value of the current sensing frame with that of the neighboring frame.Therefore

the proposed algorithm could decrease the miss detection probability in case of the instantaneous signal energy dropping when primary user used the licensed spectrum.Furthermore

theoretical expressions for detection probability and false alarm probability were derived.Finally

theoretical analysis and simulation results verify that the detection performance of the proposed algorithm is better than that of cooperative spectrum sensing which is based on the classical energy detection.

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Keywords

references

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