Intelligent Selective Spectrum Access in Cognitive Radio Networks
نویسندگان
چکیده
منابع مشابه
Dynamic Spectrum Access in Cognitive Radio Networks
Spectrum inefficient utilization and growing in demand of wireless services is one of the challenges facing the wireless communication systems as the spectrum is a finite resource. There is a need of better and smarter exploitation of the limited spectrum which will enables the usage and to allowing sharing of temporally unused spectrum allocated to the television broadcast service in non inter...
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The invention of portable hand-held devices, such as smart phones and tablet personal computers (PCs), has led to a dramatic increase in the demand of ubiquitous wireless communication networks and has shaped the way people communicate these days. Ranging from old-fashioned cellular networks (e.g., 4G networks) to recent local area networks (e.g., WiFi networks) or body area networks (e.g., Blu...
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In this paper, we propose an opportunistic channel access scheme based on weighted residual entropy function in cognitive radio networks. This central decision scheme significantly improves spectrum utilization compared with random and first opportunistic spectrum access schemes. Particularly, in this mechanism, appropriate spectrum opportunity will be selected based on the usefulness of idle c...
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Over the past few years, significant effort has been put into various treatments of dynamic spectrum access. This study has resulted in a many protocols and heuristic techniques for coexistence between primary and secondary users in a frequency band. However, none of these approaches has resulted in a description suitable for implementation on a generalpurpose cognitive engine. As a result, dev...
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Spectrum access protocols permit secondary users to transmit on frequency bands that are not being utilized by the primary owners. A cognitive radio that wishes to transmit in a band must first decide if the band is available (i.e., not being used by the owner) and then it must periodically re-evaluate the band’s availability once it begins transmitting in the band to ensure that a signal from ...
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ژورنال
عنوان ژورنال: Journal of Artificial Intelligence
سال: 2016
ISSN: 1994-5450
DOI: 10.3923/jai.2016.65.71