Title :
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
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;
Conference_Titel :
Communications, Circuits and Systems, 2004. ICCCAS 2004. 2004 International Conference on
Print_ISBN :
0-7803-8647-7
DOI :
10.1109/ICCCAS.2004.1346294
