FIR filter optimization as preemphasis of high-speed backplane data transmission

Author

Li, Miao ; Kwasniewski, Tad ; Wang, Shoujun ; Tao, Yuming

Author_Institution

Dept. of Electron., Carleton Univ., Ottawa, Ont., Canada

Volume

2

fYear

2004

Firstpage

773

Abstract

FIR filter preemphasis has been used to counteract intersymbol interference (ISI) in high-speed backplane data transmission. Backplane channel characteristics are first analyzed. It is found that channel group delay distortion is also a major ISI contributor in addition to amplitude attenuation. A MATLAB program is then described for optimization of the FIR filter under the LMS criterion. Both symbol-spaced FIR (SSF) and fractionally-spaced FIR (FSF) are comparatively studied at different data rates. The determination of tap number and preference of FSF to SSF are discussed.

Keywords

FIR filters; computer aided analysis; computer interfaces; data communication; delays; distortion; interference suppression; intersymbol interference; least mean squares methods; optimisation; telecommunication channels; FIR filter optimization; ISI; LMS criterion; amplitude attenuation; channel characteristics; channel group delay distortion; fractionally-spaced FIR; high-speed backplane data transmission; intersymbol interference; preemphasis; symbol-spaced FIR; tap number; Attenuation; Backplanes; Connectors; Data communication; Delay; Dielectric losses; Finite impulse response filter; Intersymbol interference; Least squares approximation; MATLAB;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Circuits and Systems, 2004. ICCCAS 2004. 2004 International Conference on

Print_ISBN

0-7803-8647-7

Type

conf

DOI

10.1109/ICCCAS.2004.1346294

Filename

1346294