Sparse equalizer system

摘要

A sparse equalizer system is disclosed. One or more multiple tapped delay lines (e.g., equalizers and/or pre-equalizers) are implemented to service one or more respective channels with which a communication device operates to support communications with at least one other communication device. Adaptive selection of which subsets of taps of the one or more multiple tapped delay lines is made to control those particular taps of which contribute to one or more subsequent slicer inputs. Those taps which are not currently operating to contribute to the slicer input may undergo processing, updating, etc. in parallel with or simultaneously with the processing of a signal to generate the outputs to be provided to the one or more subsequent slicers.

主权项

1. An apparatus comprising:
at least one communication interface configured to support communication with at least one additional apparatus via a plurality of channels; an equalizer that includes:
a first tapped delay line includes a first plurality of taps to perform equalization using a first plurality of coefficients, respectively; anda second tapped delay line includes a second plurality of taps to perform equalization using a second plurality of coefficients, respectively; a processor configured to:
select a first subset of the first plurality of taps operative for equalization of a first signal corresponding to a first of the plurality of channels, such that a second subset of the first plurality of taps is inoperative for the equalization, to generate a first processed signal;update the second subset of the first plurality of taps when the first subset of the first plurality of taps is operative for the equalization of the first signal; andselect a first subset of the second plurality of taps operative for equalization of a second signal corresponding to a second of the plurality of channels, such that a second subset of the second plurality of taps is inoperative for the equalization, to generate a second processed signal;update the second subset of the second plurality of taps when the first subset of the second plurality of taps is operative for the equalization of the second signal; and a slicer configured to:
process the first processed signal to generate a first hard decision; andprocess the second processed signal to generate a second hard decision.