Equalization method with adjustable equalizer span

Details Equalization method with adjustable equalizer span Equalization method with adjustable equalizer span

2006-09-12

2010-06-08

Kim, Kevin Y (Department: 2611)

Pulse or digital communications

Equalizers

Automatic

Reexamination Certificate

active

07733951

ABSTRACT:
An equalization method receiving a received sample to generate an equalizer output. A channel profile is first provided, comprising a main path and a plurality of echoes distributed in time domain. Echoes anterior to the main path are precursors, and echoes posterior to the main path are postcursors. The received sample is filtered with a linear equalizer (LE) comprising a plurality of taps to generate an LE output. A slicer slices the equalizer output to generate a sliced sample. The sliced sample is further sent to a decision feedback equalizer (DFE) comprising a plurality of taps to generate a DFE output. Simultaneously, an equalizer span is determined based on the channel profile. The LE output and the DFE output are combined to generate the equalizer output having the equalizer span. The equalizer span is determined by allocating the position of main tap.

REFERENCES:
patent: 6735248 (2004-05-01), Gu et al.
patent: 2004/0161029 (2004-08-01), Malladi et al.
patent: 2005/0129143 (2005-06-01), Kang et al.

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