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Minimizing the coarse-fine spectrum sensing time of cognitive radios with ideal secondary detectors subject to noise uncertainty: an analytical approach

Published: 26 October 2011 Publication History

Abstract

In previous work a method was derived for generating estimates of design curves for Coarse-Fine spectrum sensing. One of the problems that the method had was it could not account for variations in noise power. If the noise was uncertain or not the same across the bands, then the model could not predict the performance correctly.
Here a method is provided to solve this problem, together with a Markov Chain analysis of the system. It will be shown that, by accounting for the variation of noise power in the probability distribution functions, the analysis can be performed as previously, thus reducing simulation time. The Markov model of the process provides a more rigorous analysis of the expected speed gain of the system.

References

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S. J. Shellhammer. Spectrum sensing in IEEE 802.22. In IAPR Wksp. Cognitive Info. Processing, 9--10 June 2008.
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B. Lawton C. Murphy. Coarse-fine spectrum sensing for reduced sensing time. In Signal Processing and Communication Systems (ICSPCS), 2010 4th International Conference on, December 13th-15th 2010.
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Radio Telefis Eireann Transmission Network. Receiving digital television. http://www.rtenl.ie/downloads/ReceivingDTT.pdf.
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A C. Cohen N. Balakrishnan. Order Statistics and Inference. Academic Press, INC, 1991.
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M. S. Alouini F. F. Digham and M. K. Simon. On the energy detection of unknown signals over fading channels. In Proc. IEEE Int. Conf. Commun, pages 3575--3579, 2003.
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Hwei P. Hsu. Theory and Problems of Analog and Digital Communications. Schaum Outline Series, 1993.
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A. Leon-Garcia. Probability, statistics, and random processes for electrical engineering. Prentice Hall, 3rd edition, 2008. ISBN 10: 0-13-147122-8.
[8]
J. Laurie Snell J. G. Kemeny. Finite Markov Chains. Van Nostrand Reinhold, 1960. Chapter 3.

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CogART '11: Proceedings of the 4th International Conference on Cognitive Radio and Advanced Spectrum Management
October 2011
372 pages
ISBN:9781450309127
DOI:10.1145/2093256
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

Sponsors

  • Universitat Pompeu Fabra
  • IEEE
  • Technical University of Catalonia Spain: Technical University of Catalonia (UPC), Spain
  • River Publishers: River Publishers
  • CTTC: Technological Center for Telecommunications of Catalonia
  • CTIF: Kyranova Ltd, Center for TeleInFrastruktur

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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 26 October 2011

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Author Tags

  1. coarse-fine spectrum sensing
  2. cognitive radio
  3. design
  4. energy detector
  5. spectrum sensing

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CogART '11
Sponsor:
  • Technical University of Catalonia Spain
  • River Publishers
  • CTTC
  • CTIF

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