Patent · US Active

Decision feedback equalization with fractionally-spaced feedback data

US7580455B2 · kind B2 · utility

1Cited by

5References

14Claims

0Family size

Inventors

Thomas J. Endres · Seattle, US
Douglas Whitcomb · Kent, US
Christopher D. Long · Maple Valley, US
Wonzoo Chung · Kent, US

Key dates

Filing date	Mar 18, 2008
Grant date	Aug 25, 2009
Priority date	—
Expiry date	Mar 19, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2025/03745
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A decision feedback equalizer (DFE) architecture uses feedback samples that are over-sampled with respect to the symbol rate. On-baud feedback samples are quantized with a slicer, while off-baud samples are linear, IIR samples. Both forward and feedback filters are fractionally-spaced, but adapted only at the baud instances.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.