An Active Interference Management Scheme for Cognitive Radio Systems 


Vol. 38,  No. 10, pp. 843-850, Oct.  2013


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  Abstract

Cognitive radio systems have been considered as a strong solution of frequency scarcity due to the limit of frequency resources. This paper proposed an active interference management scheme that the secondary system can coexist with the primary system in the same frequency band without interference. Using the proposed protocol, the secondary user acquires interference channel information and transmit/receive filter information and designs precoding matrix using these information. Since interference from the secondary systems are collected to unused subchannels of the primary system, the primary system can suppress interference without additional process. The secondary systems suppress interference from the primary system using whitening matched filter so that the spectral efficiency can be improved. Numerical results provides that the proposed scheme improves performance of the secondary systems without interference to the primary system and do not degrade performance of the primary system even if the number of the secondary systems increases.

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  Cite this article

[IEEE Style]

J. Seo, C. Yang, G. Park, J. Chung, "An Active Interference Management Scheme for Cognitive Radio Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 38, no. 10, pp. 843-850, 2013. DOI: .

[ACM Style]

Jongpil Seo, Chamsol Yang, Gunwoo Park, and Jaehak Chung. 2013. An Active Interference Management Scheme for Cognitive Radio Systems. The Journal of Korean Institute of Communications and Information Sciences, 38, 10, (2013), 843-850. DOI: .

[KICS Style]

Jongpil Seo, Chamsol Yang, Gunwoo Park, Jaehak Chung, "An Active Interference Management Scheme for Cognitive Radio Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 38, no. 10, pp. 843-850, 10. 2013.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880