The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Fractionally Spaced Blind Equalization Using Singular Value Decomposition

특이값 분해를 이용한 블라인드 부분 간격 등화기

  • Kim, Geumbee (Department of Information and Communication, Inha University) ;
  • Lee, Jeongwon (Department of Information and Communication, Inha University) ;
  • Nam, Haewoon (Department of Electrical Engineering, Hanyang University) ;
  • Park, Daeyoung (Department of Information and Communication, Inha University)
  • Received : 2016.08.05
  • Accepted : 2016.09.13
  • Published : 2016.09.30
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Abstract

This letter proposes a new blind fractionally spaced equalization (FSE). The conventional linear program (LP) FSE reduces the degree of freedom (DOF) by abandoning many equalization filter taps, which causes severe performance degradations. We use singular value decomposition (SVD) to obtain the signal subspace and to fully utilize all samples for performance improvement. The proposed scheme has similar performance with the nuclear norm minimization and has as low complexity as the LP equalizer.

이 논문은 새로운 블라인드 부분 간격 등화기를 제안한다. 기존의 선형 계획법을 이용한 등화기는 등화기 필터 탭의 자유도를 강제로 줄였기 때문에 성능이 저하된다. 제안 방법은 특이값 분해를 통해 신호 공간을 구해 표본을 최대한 사용하여 등화기 성능을 향상시킨다. 제안 방법은 핵 노름을 이용한 등화기와 성능은 비슷하면서도, 기존 선형 계획법을 이용한 등화기와 비슷한 낮은 복잡도를 갖는다.

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References

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