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Nonconvex Optimization of Collaborative Multiband Spectrum Sensing for Cognitive Radios with Genetic Algorithms
Joint Authors
Sanna, Michele
Murroni, Maurizio
Source
International Journal of Digital Multimedia Broadcasting
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-06-23
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Engineering Sciences and Information Technology
Telecommunications Engineering
Electronic engineering
Information Technology and Computer Science
Abstract EN
Cognitive Radio (CR) is a novel technology that permits secondary users (SUs) to transmit alongside primary users (PUs).
PUs retain transparent communications whereas SUs perform spectrum sensing and adaptive transmission to avoid collisions.
Ultra-wideband sensing is of primary importance for SU to sense and access opportunistically several bands at a time.
Reliable detection in wide geographical regions needs collaborative sensing.
Optimal collaborative multiband sensing is not analytically solvable unless some approximations and solution domain restrictions are applied for convexity exploitation.
In this paper, we demonstrate that convex constraints are deleterious.
We propose an alternative optimization technique based on genetic algorithms.
Genetic programming performs a direct search of the optimal solution without approximations and solution domain restrictions.
As a consequence, collaborative multiband sensing can be consistently optimized without limitations.
Additionally the genetic optimization exploits the correlation of time-varying channels for fast adaptive convergence.
American Psychological Association (APA)
Sanna, Michele& Murroni, Maurizio. 2010. Nonconvex Optimization of Collaborative Multiband Spectrum Sensing for Cognitive Radios with Genetic Algorithms. International Journal of Digital Multimedia Broadcasting،Vol. 2010, no. 2010, pp.1-12.
https://search.emarefa.net/detail/BIM-479200
Modern Language Association (MLA)
Sanna, Michele& Murroni, Maurizio. Nonconvex Optimization of Collaborative Multiband Spectrum Sensing for Cognitive Radios with Genetic Algorithms. International Journal of Digital Multimedia Broadcasting No. 2010 (2010), pp.1-12.
https://search.emarefa.net/detail/BIM-479200
American Medical Association (AMA)
Sanna, Michele& Murroni, Maurizio. Nonconvex Optimization of Collaborative Multiband Spectrum Sensing for Cognitive Radios with Genetic Algorithms. International Journal of Digital Multimedia Broadcasting. 2010. Vol. 2010, no. 2010, pp.1-12.
https://search.emarefa.net/detail/BIM-479200
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-479200