Automatic equalizer with a branched input for improved accuracy

Details Automatic equalizer with a branched input for improved accuracy Automatic equalizer with a branched input for improved accuracy

1995-09-07

1997-01-28

Chin, Stephen

Pulse or digital communications

Equalizers

Automatic

375229, 375232, 333 18, H03H 730

Patent

active

055984347

ABSTRACT:
The invention provides an automatic equalizer which can keep, even where it is employed for a modem which has a very large number of taps, a high degree of accuracy in error correction of tap coefficients and can obtain an equalized signal with a high degree of accuracy. The automatic equalizer includes an equalization calculation section including a plurality of delaying sections, a tap coefficient multiplication section and a totaling calculation section, a tap coefficient error correction section for correcting errors of tap coefficients for the equalization calculation section based on an input to the automatic equalizer and an output of the automatic equalizer, and an input level setting section for setting an input signal level to the equalization calculation section and an input signal level to the tap coefficient error correction section to levels different from each other.

REFERENCES:
patent: 5097482 (1992-03-01), Serizawa et al.
patent: 5189684 (1993-02-01), Kaku et al.
patent: 5295157 (1994-03-01), Suzuki et al.
patent: 5305351 (1994-04-01), Mizoguchi et al.

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