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:
Apr. 18, 2006
Filed:
Dec. 19, 2002
Feng Ouyang, Holmdel, NJ (US);
Feng Ouyang, Holmdel, NJ (US);
Globespan Virata Inc., Red Bank, NJ (US);
Abstract
A method and apparatus for mitigating for inter-symbol interference in a communication system using a multi-rate adaptive decision feedback equalizer (DFE) with a feedforward filter which is a combination of a first feedforward filter (FF) that performs match filtering and a second feedforward filter (FF) which runs at a lower sampling rate than first feedforward filter (FF), thereby, reducing the total the number of computation done at the receiver, and removes ISI and white noise. The present invention also employs a method and apparatus where the initial training is done separately for the first feedforward filter (FF) and the second feedforward filter (FF). An approximate solution of the optimal receiver has the first feedforward filter (FF) maximize the output signal to noise ratio (SNR) which is used to train first feedforward filter (FF).