A pipelined architecture for the normalized LMS adaptive digital filters

Author

Harada, Akio ; Nishikawa, Kiyoshi ; Kiya, Hitoshi

Author_Institution

Dept. of Electr. Eng., Tokyo Metropolitan Univ., Japan

fYear

1998

fDate

24-27 Nov 1998

Firstpage

73

Lastpage

76

Abstract

Pipelined implementation of the NLMS has not yet been proposed. The proposed architecture is the first attempt to implement the NLMS ADF in the pipelined fashion. The architecture is based on an equivalent expression of the NLMS derived in this study. It is shown that the proposed architecture achieves a constant and a short critical path without producing output latency. In addition, it retains the advantage of the NLMS, i.e., that the step size that assures the convergence is determined automatically. Computer simulation results confirm that the proposed architecture achieves convergence characteristics identical to those of the NLMS

Keywords

adaptive filters; convergence of numerical methods; digital filters; least mean squares methods; pipeline processing; convergence characteristics; critical path; equivalent expression; normalized LMS adaptive digital filters; output latency; pipelined architecture; step size; Adaptive filters; Computer architecture; Computer simulation; Convergence; Delay; Digital filters; Energy consumption; Feedback loop; Least squares approximation; Signal processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1998. IEEE APCCAS 1998. The 1998 IEEE Asia-Pacific Conference on

Conference_Location

Chiangmai

Print_ISBN

0-7803-5146-0

Type

conf

DOI

10.1109/APCCAS.1998.743661

Filename

743661