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:
Feb. 28, 2006
Filed:
Aug. 27, 2001
Steve A. Allpress, Hoboken, NJ (US);
Quinn LI, Madison, NJ (US);
Steve A. Allpress, Hoboken, NJ (US);
Quinn Li, Madison, NJ (US);
Broadcom Corporation, Irvine, CA (US);
Abstract
This invention describes an apparatus and method to improve the performance of a decision feedback equalizer (DFE) for time-varying multi-path channels. For minimum-phase channels, the equalization is performed in a time-forward manner. For maximum-phase channels, the equalization is performed in a time-reversed manner. More specifically, for maximum-phase channels, the filter coefficients are computed based on the channel estimates reversed in time, and the filtering and equalization operations are performed with the received block of symbols in a time-reversed order. In the context of this invention, the term 'minimum-phase channel' implies that the energy of the leading part of the channel profile is greater than the energy of the trailing part. The term 'maximum-phase channel' implies that the energy of the leading part of the channel profile is less than the energy of the trailing part.