Patent ID: 7154942
Filing Date: 2006-12-26
Classification: H04L

Abstract:
1. A digital receiving apparatus comprising: a receiver responsive to a digitally modulated signal to perform conversion of the digitally modulated signal to soft decision data; an impairment correlator operatively coupled to the receiver and responsive to the soft decision data to correlate a plurality of different types of impairments of the digitally modulated signal by using a plurality of predefined impairment masks wherein each impairment mask is a set of undesired values associated with the digitally modulated signal; a system controller operatively coupled to the impairment correlator to receive a correlation weight from the impairment correlator to determine a likelihood that a particular impairment type is affecting the digitally modulated signal; and a data slicer operatively coupled to the receiver that receives the soft decision data and generates recovered data.