Systems, circuits and methods for adapting parameters of components in a receiver
AssigneeNetLogic Microsystems, Inc.
InventorsAndrew Lin, Faramarz Bahmani
Life of this patent
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Abstract
A receiver is optimized by adapting parameters of components within the receiver. Various component parameters are adapted by using either a least means squared algorithm or a steepest descent algorithm. The taps of a decision feedback equalizer can be adapted by using either a least means squared algorithm or a steepest descent algorithm. The gain value of a linear equalizer and the input of a digital to analog converter coupled to the linear equalizer are also adapted through the least means squared algorithm or a steepest descent algorithm. A variable gain amplifier is also capable of being adapted through the use of the least means squared algorithm. Clock offsets are also configured by use of a steepest descent algorithm.
Claims19
A method for adapting parameters of components in a receiver, comprising:
- adapting a plurality of taps of a decision feedback equalizer by using a least means squared algorithm;
- configuring a parameter of a linear equalizer by using a steepest descent algorithm to select a value of the parameter that minimizes a signal error rate;
- varying a gain of a variable gain amplifier by using the least means squared algorithm;
- and
- adjusting a clock offset by using the steepest descent algorithm to select a value of the clock offset that minimizes the signal error rate, wherein the adjusting of the clock offset changes a sampling point of a data slicer and an error slicer.
A system for adapting parameters of components in a receiver, comprising:
- a decision feedback equalizer comprising a plurality of taps for adaptation by using a least means squared algorithm;
- a linear equalizer comprising a parameter for configuration by using a steepest descent algorithm to select a value of the parameter that minimizes a signal error rate;
- a variable gain amplifier comprising a gain value for varying by using the least means squared algorithm;
- and
- a clock offset module for adjusting a clock offset value by using the steepest descent algorithm to select a value for the clock offset that minimizes the signal error rate, wherein the adjusting of the clock offset value changes a sampling point of a data slicer and an error slicer.
A method for adapting parameters of components in a receiver, comprising:
- adapting a tap of a decision feedback equalizer by using a steepest descent algorithm to select a value for the tap that minimizes a signal error rate;
- configuring a parameter of a linear equalizer by using a steepest descent algorithm to minimize the signal error rate;
- varying a gain of a variable gain amplifier by using a least means squared algorithm;
- and
- adjusting a clock offset by using the steepest descent algorithm to minimize the signal error rate, wherein the adjusting of the clock offset changes a sampling point of a data slicer and an error slicer.
Dependencies are inferred from the claim text.