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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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 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.
 Keywords
cognitive radio;interference management;uplink system;
 Language
Korean
 Cited by
1.
협력 무선인지 네트워크에서의 보안 채널 용량 분석,누엔반딘;김현민;신오순;

한국통신학회논문지, 2014. vol.39B. 11, pp.803-809 crossref(new window)
2.
SNR에 기초한 순환적 전치 부호를 가지는 시스템에서 고유필터를 사용한 잡음 제거,김진국;

한국통신학회논문지, 2014. vol.39B. 10, pp.700-707 crossref(new window)
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