认知无线电频谱感知技术综述

IF 0.7 Q3 ENGINEERING, MULTIDISCIPLINARY

Engineering Review Pub Date : 2022-01-01 DOI:10.30765/er.1677

N. Chaudhary, R. Mahajan

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引用次数: 3

摘要

在无线通信中，频谱感知是研究无线电环境的重要技术之一。利用频谱感知现象来估计整个无线电频谱的未利用频带。通过增强频谱传感技术，可以提高可用频谱的利用率。现有的频谱传感技术在低信噪比、多径衰落和阴影环境下的性能会大幅下降。这可能会导致虚警概率的增加和检测概率的降低。本文对不同的频谱感知技术(SST)进行了分类，并对频谱感知中使用的不同方法进行了探讨。本文还比较了能量检测器(ED)、匹配滤波器检测(MFD)、循环平稳特征检测(CFD)、波形检测(WD)和特征值检测(EVD)的方法和精度。本文强调了与这些频谱传感技术相关的各种问题，并提出了改进现有频谱传感技术的未来解决方案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Comprehensive review on spectrum sensing techniques in cognitive radio

In wireless communication, spectrum sensing (SS) is one of the important techniques to study about the radio environment. Spectrum sensing phenomenon is used to estimate the unutilized frequency band of whole radio spectrum. Utilization of available spectrum can be improved by enhancing the spectrum sensing techniques. The performance of available spectrum sensing techniques may degrade substantially in low signal to noise ratio, multipath fading & shadowing environments. This may lead to increase in probability of false alarms and decrease in probability of detection. This paper gives the categorization of different spectrum sensing techniques (SST) and it also explores the different methods used in spectrum sensing. Comparison of energy detector (ED), matched filter detection (MFD), cyclostationary feature detection (CFD), waveform detection (WD) and eigen value detection (EVD) based on their methodology and accuracy is also present in this paper. Various issues associated with these spectrum sensing techniques are highlighted here and futuristic solutions proposed for improvement in existing spectrum sensing techniques.

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来源期刊

Engineering Review ENGINEERING, MULTIDISCIPLINARY-

CiteScore

1.00

自引率

0.00%

发文量

期刊介绍： Engineering Review is an international journal designed to foster the exchange of ideas and transfer of knowledge between scientists and engineers involved in various engineering sciences that deal with investigations related to design, materials, technology, maintenance and manufacturing processes. It is not limited to the specific details of science and engineering but is instead devoted to a very wide range of subfields in the engineering sciences. It provides an appropriate resort for publishing the papers covering prior applications – based on the research topics comprising the entire engineering spectrum. Topics of particular interest thus include: mechanical engineering, naval architecture and marine engineering, fundamental engineering sciences, electrical engineering, computer sciences and civil engineering. Manuscripts addressing other issues may also be considered if they relate to engineering oriented subjects. The contributions, which may be analytical, numerical or experimental, should be of significance to the progress of mentioned topics. Papers that are merely illustrations of established principles or procedures generally will not be accepted. Occasionally, the magazine is ready to publish high-quality-selected papers from the conference after being renovated, expanded and written in accordance with the rules of the magazine. The high standard of excellence for any of published papers will be ensured by peer-review procedure. The journal takes into consideration only original scientific papers.