منابع مشابه
Cognitive Radios in Public Safety and Spectrum Management
As wireless communications become more important to daily life, the wireless research community must create more efficient and useful radios to satisfy the rising needs for spectrum. The cognitive radio work covered in this paper addresses the spectrum and communications issues. Cognitive radios are aware, flexible, and intelligent, and they allow a radio to understand the wireless environment ...
متن کاملCognitive Radios – Spectrum Sensing Issues
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متن کاملCognitive Radios for Spectrum Sharing
Wireless systems require spectrum to operate, but interference is likely if radios in physical proximity simultaneously operate on the same band. Therefore, spectrum is a potentially scarce resource; across the planet today, spectrum is regulated so that most bands are allocated exclusively to a single system licensed to use that band in any given location. However, such static spectrum allocat...
متن کاملCognitive Radios for Spectrum Sharing: Technical Appendices
This is a technical appendix to the paper titled Cognitive Radios for Spectrum Sharing which will appear in the January issue of the IEEE Signal Processing Magazine. Due the severe space constraints the technical details had to be moved out of the paper and incorporated into this report. I. TECHNICAL DETAILS FOR FIGURE 1 To calculate the available white space we retrieved the FCC’s transmitter ...
متن کاملCentralized Integrated Spectrum Sensing for Cognitive Radios
Spectrum sensing is the challenge for cognitive radio design and implementation, which allows the secondary user to access the primary bands without interference with primary users. Cognitive radios should decide on the best spectrum band to meet the Quality of service requirements over all available spectrum bands. This paper investigates the integrated centralized spectrum sensing techniques ...
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ژورنال
عنوان ژورنال: IEEE Communications Magazine
سال: 2009
ISSN: 0163-6804,1558-1896
DOI: 10.1109/mcom.2009.4804394