SCHEMES FOR EQUALIZATION OF COMMUNICATION CHANNELS WITH NONLINEAR IMPAIRMENTS

Two novel techniques are described for equalisation of nonlinear inter symbol interference. One is a symbol-by-symbol-type technique and is b uilt around a conventional decision-feedback equaliser by embedding a neural radial basis-function network before the slicer. The other is a maximum-likelihood method exploiting the classification nature of an equaliser. A Viterbiminimisation approach is employed which circumvent s the need for an explicit channel estimation.