Patent ID: 8005135
Filing Date: 2011-08-23
Classification: H04L

Abstract:
1. A receiver system comprising: a pre-filtering analog equalizer for adaptively performing analog equalization on a symbol-information-carrying input analog signal affected with intersymbol interference, or on a first intermediate analog signal generated from the input analog signal, to produce a filtered partially equalized analog signal with reduced intersymbol interference; an analog-to-digital converter for converting the filtered analog signal, or a second intermediate analog signal generated from the filtered analog signal, into an initial digital signal; a digital equalizer for adaptively performing digital equalization on the initial digital signal, or on an intermediate digital signal generated from the initial digital signal, to produce an equalized digital signal as a stream of equalized digital values with further reduced intersymbol interference; an output decoder for decoding the equalized digital values, or intermediate digital values generated from the equalized digital values, into a stream of symbols; and equalization control circuitry for adjusting equalization filter characteristics of the analog and digital equalizers such that adjustments of the filter characteristics of a specified one of the equalizers depend adaptively on adaptive adjustments of the filter characteristics of the other of the equalizers.