Enhanced spectrum sensing using a combination of energy detector, matched filter and cyclic prefix
نویسندگان
چکیده
منابع مشابه
Spectrum Sensing Using Cyclic Prefix in Cognitive Radio Wireless System
The rapid growth of wireless communications has made the problem of spectrum utilization ever more critical. The increasing diversity (voice, short message, Web & multimedia) and demand of high quality-of-service (QoS) applications have resulted in overcrowding of the allocated (officially sanctioned) spectrum bands, leading to significantly reduced levels of user satisfaction. The concepts of ...
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Spectrum sensing is an important task in cognitive radio (CR). Matched filter technique one of the techniques employed for spectrum sensing in cognitive radio which faces the challenge of low frequency offset tolerance in very low SNR environments. Hybrid matched filter architecture is used to improve this frequency offset tolerance. But, overall even such kind of architecture results in coarse...
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In this paper, two well-known cognitive radio spectrum sensing (CR-SS) methods, energy detection (ED) and matched filter (MF), are numerically realized in time domain (TD) as well as frequency domain (FD). Simulations for both ED and MF methods demonstrate the similar results (probability of detection) in the similar conditions for TD and FD versions of each method. In contrast, the required pr...
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Cognitive radio draw lots of research attentions in recent years for its efficient spectrum utilization. In cognitive radio networks, the first cognitive task preceding any form of dynamic spectrum management is the spectrum sensing and identification of spectrum holes in wireless environment. Spectrum Sensing is an important functionality of Cognitive Radio (CR). Accuracy and speed of estimati...
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---------------------------------------------------------------------***--------------------------------------------------------------------Abstract When unlicensed users need to use the licensed spectrum, it is necessary to detect the unused frequency bands called white spaces. Cognitive radio can be used to do this particular task by dynamic spectrum sensing. This paper explains about detecti...
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ژورنال
عنوان ژورنال: Digital Communications and Networks
سال: 2020
ISSN: 2352-8648
DOI: 10.1016/j.dcan.2019.08.009