Video deghosting using adaptive echo-detecting IIR filters

This paper describes a novel adaptive channel equalizer (ACE), designed within the frame of the Europroject JESSI AE45B IQTV. According to an architectural indirect approach, the defined deghosting algorithm updates adaptively the system filter coefficients, to minimize the difference between the actual system output and the desired output signal. Thanks to an IIR filtering structure and to a novel deghosting algorithm, one is able to decrease effectively the filter coefficients, the system hardware complexity is reduced compared to the classic echo cancelling solutions. This feature makes ACE attractive for a single-chip VLSI implementation