Adaptive equalizer method and apparatus

Details Adaptive equalizer method and apparatus Adaptive equalizer method and apparatus

1992-09-15

1993-09-14

Mai, Tan V.

Boots, shoes, and leggings

G06J 100

Patent

active

052455564

ABSTRACT:
An equalizer is arranged for equalizing a received signal comprising 2-binary, 1-quaternary-coded multi-level signals S(-3), S(-1), S(+1), S(+3) corresponding to predetermined signal levels -3, -1, +1, +3, respectively. The equalizer includes a gain unit (107) with an adjustable gain, a filter (111) with an adjustable pole and zero, and a processor (119). The processor adjusts the equalizer by sampling equalized S(+3) signals and adjusting the gain, the pole and the zero so that the average value of the equalized S(+3) signals is substantially equal to +3 volts and the variance of the equalized S(+3) signals is minimized.

REFERENCES:
patent: 4456893 (1984-06-01), Otani
patent: 4803895 (1981-12-01), Ohnishi et al.
patent: 5068873 (1991-11-01), Murakami

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