Decision feedback equalizer employing fixed ratio postcursor tap

Details Decision feedback equalizer employing fixed ratio postcursor tap Decision feedback equalizer employing fixed ratio postcursor tap

1994-12-15

1996-10-01

Tse, Young T.

Pulse or digital communications

Equalizers

Automatic

36472416, 3647242, H03H 730

Patent

active

055616879

ABSTRACT:
The feedforward filter section of a decision feedback equalizer is modified to include one or more postcursor taps, that are sequentially weighted at decreasing binary fractions of the cursor tap. Such a modified feedforward filter section, combined with the placement of a simple anti-aliasing filter upstream of the sampling point, results in an optimum feedforward filter configuration that is not anticausal, and offers a substantially improved performance over conventional DFB equalizer structures. Optimum performance is achieved when such a postcursor filter structure is augmented with an adaptive noise canceler coupled in the DFB path.

REFERENCES:
patent: 4631735 (1986-12-01), Quresri
patent: 4789994 (1988-12-01), Randall et al.
patent: 5031194 (1991-07-01), Crespo et al.
patent: 5117291 (1992-05-01), Fadavi-Ardekani et al.
patent: 5293402 (1994-03-01), Crespo et al.

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