用于认知无线电的三种新型统计测试启发式频谱传感技术

IF 6.3 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Open Journal of the Communications Society Pub Date : 2024-10-29 DOI:10.1109/OJCOMS.2024.3487825
Hager S. Fouda;Mostafa M. Fouda
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引用次数: 0

摘要

对于认知无线电(CR)中基于多天线的频谱感知(SS),基于统计测试的方法已得到广泛研究。然而,这些方法的性能既不令人满意,也不足以检测主用户(PU),尤其是在弱信号环境下。本文开发了三种基于统计检验的新型方法,以推进这一前景广阔的领域。第一种方法是在 Durbin Watson 检验框架下制定的盲自相关性和随机性检验。第二种是非参数离散性检验,它是根据方差分析(ANOVA)巴特利检验设计的。最后一种是非参数位置检验,其灵感来源于方差分析中的 Kruskal Wallis 检验。数值分析中考虑了具有加性高斯噪声的多径衰落信道。此外,还将 Middleton A 类脉冲噪声建模为非高斯噪声(NGN),以模拟现实噪声环境的统计特征。在低信噪比 (SNR)、少量样本和少量接收元素的条件下,与最先进的 SS 技术进行了几种情景比较。仿真结果表明,我们建议的方法在不同水平上都优于其他 SS 技术。此外,还推导出了三种所研究算法的测试统计闭式表达式和渐近理论阈值。此外,理论分析与仿真结果相吻合,从而得到了验证。
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Three Novel Statistical Tests-Inspired Spectrum Sensing Techniques for Cognitive Radio
Statistical tests-based approaches have been extensively researched for multiple antenna-based spectrum sensing (SS) in cognitive radio (CR). Nevertheless, their performance is neither satisfactory nor adequate to detect the primary user (PU) particularly in weak signal environments. In this paper, three novel statistical tests-based methods are developed to move forward in this promising domain. The first method is blind autocorrelation and randomness test, which is formulated under the framework of the Durbin Watson test. The second is a non-parametric dispersion test, which is designed in the light of analysis of variance (ANOVA) Bartlett’s test. The last is a non-parametric location test, which is inspired by ANOVA on rank the Kruskal Wallis test. Multipath fading channel with additive Gaussian noise is considered in numerical analysis. Furthermore, Middleton Class A impulsive noise is modeled as a non-Gaussian noise (NGN) to simulate the statistical characterization of realistic noise environments. Several comparison scenarios are performed with state-of-the-art SS techniques at the conditions of low signal-to-noise ratio (SNR), few samples, and few number of receiving elements. Simulation results revealed that our suggested methods outperform the other SS techniques at different levels. Moreover, closed-form expressions of test statistics and asymptotic theoretical thresholds are derived for the three investigated algorithms. Additionally, theoretical analysis is validated by being coincident with simulation findings.
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来源期刊
CiteScore
13.70
自引率
3.80%
发文量
94
审稿时长
10 weeks
期刊介绍: The IEEE Open Journal of the Communications Society (OJ-COMS) is an open access, all-electronic journal that publishes original high-quality manuscripts on advances in the state of the art of telecommunications systems and networks. The papers in IEEE OJ-COMS are included in Scopus. Submissions reporting new theoretical findings (including novel methods, concepts, and studies) and practical contributions (including experiments and development of prototypes) are welcome. Additionally, survey and tutorial articles are considered. The IEEE OJCOMS received its debut impact factor of 7.9 according to the Journal Citation Reports (JCR) 2023. The IEEE Open Journal of the Communications Society covers science, technology, applications and standards for information organization, collection and transfer using electronic, optical and wireless channels and networks. Some specific areas covered include: Systems and network architecture, control and management Protocols, software, and middleware Quality of service, reliability, and security Modulation, detection, coding, and signaling Switching and routing Mobile and portable communications Terminals and other end-user devices Networks for content distribution and distributed computing Communications-based distributed resources control.
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