Opportunistic cooperative spectrum sensing based on eigenvalue ratio of random matrix

Wuji ZHANG; Shunlan LIU; Jianrong BAO

doi:10.11959/j.issn.1000-0801.2020043

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Opportunistic cooperative spectrum sensing based on eigenvalue ratio of random matrix

Research and Development | 更新时间：2024-06-05

- Opportunistic cooperative spectrum sensing based on eigenvalue ratio of random matrix
- Telecommunications Science Vol. 36, Issue 2, Pages: 61-67(2020)
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- DOI：10.11959/j.issn.1000-0801.2020043
  CLC： TN925
- Published Online：2020-02，
  
  Published：20 February 2020
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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：

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.

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references

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