基于随机矩阵特征值比的机会协作频谱感知

张无际; 刘顺兰; 包建荣

doi:10.11959/j.issn.1000-0801.2020043

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基于随机矩阵特征值比的机会协作频谱感知

研究与开发 | 更新时间：2024-06-05

- 基于随机矩阵特征值比的机会协作频谱感知
- Opportunistic cooperative spectrum sensing based on eigenvalue ratio of random matrix
- 电信科学 2020年36卷第2期页码：61-67
- 作者机构：
- 作者简介：
  
  [ "张无际（1995- ），男，杭州电子科技大学硕士生，主要研究方向为信息与信号处理、无线通信等" ]
  [ "刘顺兰（1965- ），女，杭州电子科技大学教授，主要研究方向为信息与信号处理、无线通信等" ]
  [ "包建荣（1978- ），男，博士，杭州电子科技大学教授，主要研究方向为空间无线通信、通信信号处理与自主无线电等" ]
- 基金信息：
  
  浙江省自然科学基金资助项目;The Zhejiang Provincial Natural Science Foundation of China(LY18F010013);国家自然科学基金资助项目;The National Natural Science Foundation of China(U1809201)
- DOI：10.11959/j.issn.1000-0801.2020043
  中图分类号： TN925
- 网络出版日期：2020-02，
  
  纸质出版日期：2020-02-20
- 稿件说明：
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张无际, 刘顺兰, 包建荣. 基于随机矩阵特征值比的机会协作频谱感知[J]. 电信科学, 2020,36(2):61-67.

Wuji ZHANG, Shunlan LIU, Jianrong BAO. Opportunistic cooperative spectrum sensing based on eigenvalue ratio of random matrix[J]. Telecommunications science, 2020, 36(2): 61-67.
张无际, 刘顺兰, 包建荣. 基于随机矩阵特征值比的机会协作频谱感知[J]. 电信科学, 2020,36(2):61-67. DOI： 10.11959/j.issn.1000-0801.2020043.

Wuji ZHANG, Shunlan LIU, Jianrong BAO. Opportunistic cooperative spectrum sensing based on eigenvalue ratio of random matrix[J]. Telecommunications science, 2020, 36(2): 61-67. DOI： 10.11959/j.issn.1000-0801.2020043.

摘要

针对传统频谱感知检测概率较低的不足，提出了一种基于随机矩阵特征值比的机会协作频谱感知算法。该算法在随机检测理论基础上，利用双门限，加入机会协作机制，对传统最大最小特征值（MME）算法进行改进，并保留了传统能量检测算法的低复杂度优势。在已知虚警概率前提下，推导了判决门限，并在接收中依靠奇偶时隙划分，有效实现了机会协作。仿真结果表明，在低信噪比和低虚警概率的情况下，所提频谱感知算法，相对MME算法有更高的检测概率，适合在恶劣传输信道的无线通信中应用。

Abstract

To overcome the deficiencies of low detection probability of traditional spectrum sensing

an EROC spectrum sensing algorithm based on the eigenvalue ratio of a random matrix was proposed.Based on the random detection theory

it used double thresholds and opportunistic cooperation to improve of traditional maximum and minimum eigenvalue (MME) algorithm

and it retained the advantages of the traditional energy detection algorithm.Moreover

on the premise of known false alarm probability

the decision threshold was deduced

and the odd-even slot division was used to effectively realize opportunistic cooperation in reception.Simulation results show that the proposed spectrum sensing algorithm has higher detection probability than MME algorithms in case of low signal-to-noise ratio and low false alarm probability.Therefore

it is suitable for application in wireless communications with deteriorate transmission channels.

关键词

Keywords

references

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