Journal of the Institute of Electronics Engineers of Korea SP (대한전자공학회논문지SP)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Subband Affine Projection Adaptive Filter using Variable Step Size and Pipeline Transform

가변 적응상수와 파이프라인 변환을 이용한 부밴드 인접투사 적응필터

  • Choi, Hun (Dept. of Electronic Eng., Dong-Eui University, Convergence of IT Devices Institute) ;
  • Ha, Hong-Gon (Dept. of Electronic Eng., Dong-Eui University) ;
  • Bae, Hyeon-Deok (Dept. of Electrical Eng., Chungbuk Nat'l University)
  • 최훈 (동의대학교 전자공학과, IT융합부품연구소) ;
  • 하홍곤 (동의대학교 전자공학과) ;
  • 배현덕 (충북대학교 전기공학과)
  • Published : 2009.01.25
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Abstract

In this paper, we suggest a new technique which employ the pipelined architecture for the implementation of the SAP adaptive filter using variable step size. According as SAP adaptive filter is sufficiently decomposed, a simplified SAP adaptive filter can be derived, and the weights of adaptive sub-filters can be updated by a simple formular without a matrix inversion. The convergence speed and the steady state error of the simplified SAP adaptive filter are improved by using variable step size. For practical implementation, the simplified SAP adaptive sub-filters are transformed by the pipeline technique.

본 논문에서는 가변 스텝사이즈를 사용하는 SAP 적응필터의 구현을 위한 파이프라인 구조를 적용한 새로운 알고리즘을 제안한다. 제안 기법에서는 SAP 적응필터를 부밴드로 충분히 분해함으로써 단순화된 SAP적응필터를 유도할 수 있으며, 적응부필터들의 계수들을 역행렬 연산 없이 간단한 식으로 갱신할 수 있다. 단순화된 SAP 적응 필터의 수렴속도와 정상상태토차는 가변스텝사이즈를 사용함으로서 개선한다. 실제 구현을 위해 단순화된 SAP 적응필터는 파이프라인 기법을 사용하여 변환된다.

Keywords

References

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