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An Active Interference Management Scheme for Cognitive Radio Systems
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 Title & Authors
An Active Interference Management Scheme for Cognitive Radio Systems
Seo, Jongpil; Yang, Chamsol; Park, Gunwoo; Chung, Jaehak;
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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.
cognitive radio;interference management;uplink system;
 Cited by
협력 무선인지 네트워크에서의 보안 채널 용량 분석,누엔반딘;김현민;신오순;

한국통신학회논문지, 2014. vol.39B. 11, pp.803-809 crossref(new window)
SNR에 기초한 순환적 전치 부호를 가지는 시스템에서 고유필터를 사용한 잡음 제거,김진국;

한국통신학회논문지, 2014. vol.39B. 10, pp.700-707 crossref(new window)
FCC, Spectrum policy task force report, ET Docket No. 02-155, Nov. 2002.

FCC, Notice of Rule Making and Order, ET Docket No. 03-322, Dec. 2003.

J. Mitola, "Cognitive radio for flexible mobile multimedia communications," in Proc. IEEE Workshop Mobile Multimedia Commun. (MoMuC '99), pp. 3-10, San Diego, U.S.A., Nov. 1999.

IEEE, "IEEE P802.11afTM./D1.02 Draft Standard for Information Technology -Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications Amendment 3: TV White Spaces OperationU.S.," June 2011.

IEEE, "IEEE Std 802.22TM.-2011 IEEE Standard for Information Technology -Telecommunications and information exchange between systems Wireless Regional Area Networks (WRAN) - Specific requirements - Part 22: Cognitive Wireless RAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications: Policies and Procedures for Operation in the TV Bands," July 2011.

V. R. Cadambe and S. A, Jafar "Interference alignment and degrees of freedom of the K-user interference channel," IEEE Trans. Inform. Theory, vol. 54, no. 8, pp. 3424-3441, Aug. 2008.

3GPP, Coordinated multi-point operation for LTE physical layer aspects, TR 36.819 ver. 11.1.0, Dec. 2011.

Y. Kwon, H. Kim, J. Yoo, and J. Chung, "Orthogonal beamforming methodology in cognitive radio networks," in Proc. 3rd Int. Conf. Cognitive Radio Oriented Wireless Networks Commun. (CrownCom 2009), pp. 1-5, Singapore, May 2008.

E. Teletar, "Capacity of multi-antenna Gaussian channels," European Trans. Telecommun., vol. 10, no. 6, pp. 585-595, Dec. 1999. crossref(new window)