Patent ID: 8416846
Filing Date: 2013-04-09
Classification: H04L

Abstract:
1. A method for adapting a tap of a decision feedback equalizer in a receiver, comprising: receiving a plurality of data decisions and a plurality of error decisions, wherein the data decisions are generated from data slicers that determine if an output of a summer is a logical 1 or a logical 0, wherein the error decisions are generated from error slicers that compare the output of the summer with a target signal eye opening level; deriving the number of margin hits that occur by using the data decisions and the error decisions, a margin hit occurring when one of the data decisions differs from one of the error decisions; calculating a balance value from the plurality of data decisions and the plurality of error decisions, wherein the balance value is a sum of products; and updating the tap of the decision feedback equalizer by using the balance value, the updating of the tap continuing until the number of margin hits is minimized.