基于FFT谱能量检测和互相关检测的快速频谱感知方法及其性能分析

doi:10.12305/j.issn.1001-506X.2021.05.30

系统工程与电子技术 ›› 2021, Vol. 43 ›› Issue (5): 1406-1412.doi: 10.12305/j.issn.1001-506X.2021.05.30

基于FFT谱能量检测和互相关检测的快速频谱感知方法及其性能分析

常虹^1,*(), 赵小强¹(), 石海杰²()

1. 西安邮电大学通信与信息工程学院, 陕西西安 710121
2. 西北工业大学电子信息学院, 陕西西安 710129

收稿日期:2020-07-13 出版日期:2021-05-01 发布日期:2021-04-27
通讯作者: 常虹 E-mail:nuc_changhong@126.com;zxq7703@126.com;shihaijie@126.com
作者简介:常虹 (1981—), 女, 讲师, 博士, 主要研究方向为信息对抗、认知无线电。E-mail: nuc_changhong@126.com|赵小强 (1977—), 男, 教授, 博士, 主要研究方向为物联网技术及应用。E-mail: zxq7703@126.com|石海杰 (1979—), 男, 博士研究生, 主要研究方向为水声信号处理、阵列信号处理。E-mail: shihaijie@126.com
基金资助:
陕西省重点研发计划(2020GY-056);陕西省创新能力支撑计划(2019TD-028);西安市科技计划(201806117YF05NC13-2)

Joint FFT spectrum energy and correlation detection based fast spectrum sensing method and performance analysis

Hong CHANG^1,*(), Xiaoqiang ZHAO¹(), Haijie SHI²()

1. School of Communications and Information Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710121, China
2. School of Electronics and Information, Northwestern Polytechnical University, Xi'an 710129, China

Received:2020-07-13 Online:2021-05-01 Published:2021-04-27
Contact: Hong CHANG E-mail:nuc_changhong@126.com;zxq7703@126.com;shihaijie@126.com

摘要/Abstract

摘要：

为了解决无人机通信中频谱资源紧张的问题，利用认知无线电技术实现无人机动态共享地面通信的频谱资源。针对单用户频谱感知的遮挡效应问题, 利用单用户移动检测, 提出基于主用户空间范围内的频谱能量检测和互相关检测结合的二次检测方法, 分析并给出所提算法在主用户随机出现情况下的虚警概率和检测概率的解析表示。仿真结果表明, 所提算法在运算量较低情况下获得比已有单用户检测算法更好的检测性能。

关键词: 频谱感知, 单用户移动检测, 随机出现, 二次检测

Abstract:

In order to solve the problem of spectrum resource shortage in UAV Communication, cognitive radio technology is used to realize UAV dynamic sharing of spectrum resources in ground communication. Aiming at the problem of sheltering for the single user spectrum sensing, a double detection method based on single user mobile detection was proposed, which is composed of joint spectrum energy detection and cooperative detection in the scope of primary user space. The analytic representation of the detection probability and false probability is analyzed with random arrival and department of primary user. Simulation results show that the proposed algorithm has better dection performance than other single user detection algorithm in the case of low computation.

Key words: spectrum sensing, single user mobile detection, random arrival, double detection

中图分类号:

TN929.5

常虹, 赵小强, 石海杰. 基于FFT谱能量检测和互相关检测的快速频谱感知方法及其性能分析[J]. 系统工程与电子技术, 2021, 43(5): 1406-1412.

Hong CHANG, Xiaoqiang ZHAO, Haijie SHI. Joint FFT spectrum energy and correlation detection based fast spectrum sensing method and performance analysis[J]. Systems Engineering and Electronics, 2021, 43(5): 1406-1412.

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基于FFT谱能量检测和互相关检测的快速频谱感知方法及其性能分析

Joint FFT spectrum energy and correlation detection based fast spectrum sensing method and performance analysis

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