A Frequency Allocation Method for Cognitive Radio Using the Fuzzy Set Theory 


Vol. 33,  No. 9, pp. 745-750, Sep.  2008


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  Abstract

In a cognitive radio based system, quality of service (QoS) for the secondary user must be maintained as much as possible even while that of the primary user is protected all the time. In particular, switching wireless links for the secondary user during the transmission of multimedia data causes delay and information loss, and QoS degradations occur inevitably. The efficient resource management scheme is necessary to support the seamless multimedia service to the secondary user. This paper proposes a novel frequency selection method based on Multi-Criteria Decision Making (MCDM), in which uncertain parameters such as received signal strength, cell load, data rate, and available bandwidth are considered during the decision process for the frequency selection with the fuzzy set theory. Through simulation, we show that our proposed frequency selection method provides a better performance than the conventional methods which consider the received signal strength only.

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  Cite this article

[IEEE Style]

M. Lee and J. Lee, "A Frequency Allocation Method for Cognitive Radio Using the Fuzzy Set Theory," The Journal of Korean Institute of Communications and Information Sciences, vol. 33, no. 9, pp. 745-750, 2008. DOI: .

[ACM Style]

Moonho Lee and Jongchan Lee. 2008. A Frequency Allocation Method for Cognitive Radio Using the Fuzzy Set Theory. The Journal of Korean Institute of Communications and Information Sciences, 33, 9, (2008), 745-750. DOI: .

[KICS Style]

Moonho Lee and Jongchan Lee, "A Frequency Allocation Method for Cognitive Radio Using the Fuzzy Set Theory," The Journal of Korean Institute of Communications and Information Sciences, vol. 33, no. 9, pp. 745-750, 9. 2008.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880