Patent ID: 9160405
Filing Date: 2015-10-13
Classification: H04B,H04L

Abstract:
1. An integrated circuit having ancillary transceivers for use in a multi-channel communications lane, wherein a receiver circuit portion of a transceiver for a first channel of the multi-channel communications lane comprises: a symbol slicer with a symbol signal input coupled to summing circuitry having an input from an equalizer; a symbol rate adaptive near end cross talk (NEXT) filter for each lane channel with an output coupled to the summing circuitry; one or more adjustable far end cross talk (FEXT) filters each with an output coupled to an input of the summing circuitry, each of said FEXT filters respectively coupled to receive a symbol decision from one or more respective transceivers for respective channels other than the first channel in the multi-channel communications lane; and an adaptive control circuit coupled to the symbol rate adaptive NEXT filter, wherein the adaptive control circuit receives coefficients from a coefficient update circuit, and further wherein the symbol rate adaptive NEXT filter receives a control information signal from the adaptive control circuit, wherein the summing circuitry comprises a soft symbol signal output coupled to the coefficient update circuit.