The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 23, 2013
Filed:
Jun. 10, 2011
Andre Bourdoux, Esneux, BE;
Hidekuni Yomo, Osaka, JP;
Kiyotaka Kobayashi, Osaka, JP;
IMEC, Leuven, BE;
Panasonic Corporation, Osaka, JP;
Abstract
A circuit for adaptive feedback equalization is disclosed. In one aspect, the circuit includes a frequency-domain feedforward filtering section and a feedback filtering section, a slicer to slice a block of equalized symbols, a summing module for summing outputs of the filtering sections thereby yielding the block of equalized symbols. First and second updating modules provide coefficient updates to the filtering sections. The updating modules are fed with a frequency-domain converted block of error signals indicating the difference between the block of equalized symbols at the slicer input and the block of sliced symbols at the slicer output and for computing updates using the frequency-domain converted block of error signals. A time-domain compensation module receives a time-domain version of the updated filter coefficients of the feedback filtering section and symbols of the block of sliced symbols. It adds a feedback error compensation signal to the block of equalized symbols.