Implementation of Spectrum Sensing Based on Matlab and Universal Software Radio Peripheral

doi:10.3969/j.issn.1000-3428.2015.05.019

Computer Engineering

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Implementation of Spectrum Sensing Based on Matlab and Universal Software Radio Peripheral

QIN Xiean¹,WANG Ling ¹,ZHAO Haitao ²,DENG Yi ³

(1. College of Electrical and Information Engineering,Hunan University,Changsha 410082,China; 2. College of Electronic Science and Engineering,National University of Defense Technology,Changsha 410073,China;3. 73685 Department of PLA,Nanjing 210016,China)

Received:2014-05-08 Online:2015-05-15 Published:2015-05-15

基于Matlab 和通用软件无线电外设的频谱感知实现

秦协安¹,王　玲¹,赵海涛²,邓　毅³

(1. 湖南大学电气与信息工程学院,长沙410082; 2. 国防科学技术大学电子科学与工程学院,长沙410073; 3. 中国人民解放军73685 部队,南京210016)

作者简介:秦协安(1989 - ),男,硕士研究生,主研方向:认知无线网络,信息安全;王　玲,教授、博士、博士生导师;赵海涛,副教授、博士;邓　毅,硕士。
基金资助:
国家自然科学基金资助项目(61002032)。

Abstract

Abstract: To improve the utilization of spectrum resource,with real wireless channel,a software radio system consisting of Matlab and Universal Software Radio Peripheral ( USRP ) is applied as a new experiment platform for wireless communication system. With the platform,this paper completes an energy-based detection algorithm for spectrum sensing and estimating available spectrum bandwidth,realizes spectrum sensing and provides a basis for judgment in second user’s spectrum access. Experimental results show that the method can de used to design wireless system communication quickly and accurately. In high Signal Noise Ratio(SNR) and the more number of sampling cases,it can well realize spectrum sensing and meet the requirements of spectrum sensing of cognitive radio.

Key words: cognitive radio, spectrum sensing, energy detection, Universal Software Radio Peripheral ( USRP ), spectrum bandwidth

摘要： 为提高频谱资源的利用率,针对实际无线通信信道,搭建基于Matlab 和通用软件无线电外设的无线通信系统平台,应用能量检测法对主用户信号进行频谱感知和可用频谱带宽估计,实现频谱检测并为次用户的频谱接入提供判断依据。实验结果表明,该方法能快速准确地实现无线电系统通信,并且在高信噪比和采样个数较多的情况下,能较好地检测频谱占用情况,满足认知无线电频谱感知的要求。

关键词: 认知无线电, 频谱感知, 能量检测, 通用软件无线电外设, 频谱带宽

CLC Number:

TP393

QIN Xiean,WANG Ling,ZHAO Haitao,DENG Yi. Implementation of Spectrum Sensing Based on Matlab and Universal Software Radio Peripheral[J]. Computer Engineering, doi: 10.3969/j.issn.1000-3428.2015.05.019.

秦协安,王玲,赵海涛,邓毅. 基于Matlab 和通用软件无线电外设的频谱感知实现[J]. 计算机工程, doi: 10.3969/j.issn.1000-3428.2015.05.019.

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References

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Implementation of Spectrum Sensing Based on Matlab and Universal Software Radio Peripheral

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