NDLI: A motivating overview of cognitive radio: Foundations, regulatory issues and key concepts

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A motivating overview of cognitive radio: Foundations, regulatory issues and key concepts

Content Provider	IEEE Xplore Digital Library
Author	Matinmikko, M. Mustonen, M. Sarvanko, H. Hoyhtya, M. Hekkala, A. Mammela, A. Katz, M. Kiviranta, M.
Copyright Year	2008
Description	Author affiliation: VTT Tech. Res. Centre of Finland, Oulu (Matinmikko, M.; Mustonen, M.; Sarvanko, H.; Hoyhtya, M.; Hekkala, A.; Mammela, A.; Katz, M.; Kiviranta, M.)
Abstract	The radio frequency spectrum is a scarce natural resource and its efficient use is of the utmost importance. A fundamental problem facing the future wireless systems is where to find suitable spectrum bands to meet the demand of future services. A promising technique to improve the spectrum utilization under a lot of investigation is the cognitive radio (CR) concept. This paper provides an overview of a CR study with discussion on enabling techniques for CR, measurements on current spectrum use, forthcoming standardization activities and some findings from our recent research studies on spectrum sensing, frequency management, and power control. The measurements on current spectrum use have identified that in general the overall spectrum occupancy is low. However, the overall spectrum occupancy does not characterize the actual situation adequately and better measures are needed. International Telecommunication Union Radiocommunication sector (ITU-R) has started standards activities on CRs, in particular on the measurement of spectrum occupancy and CR systems in the mobile service, indicating that the inclusion of the CR concept into the future regulatory framework is topical. Reliable spectrum sensing is a crucial task of the CR and proper performance assessment is important. If the future availability times of spectrum holes can be predicted, intelligent channel selection with the predicted channel information can be useful. A power control candidate for the CR system is the truncated inverse power control.
Starting Page	1
Ending Page	5
File Size	187543
Page Count	5
File Format	PDF
ISBN	9781424421398
DOI	10.1109/COGART.2008.4509985
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-02-14
Publisher Place	Denmark
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Standardization standardization Frequency measurement Cognitive radio Radio frequency Power measurement Current measurement regulation Power control spectrum sensing Chromium power control Cognitive network Energy management spectrum management Radiofrequency identification
Content Type	Text
Resource Type	Article

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