CHANNEL EQUALISATION IN PARTICULAR FOR FADING CHANNELS

摘要

A digital radio system is described in which data symbols are transmitted over a radio channel using multi-level modulation. A receiver receives the multi-level modulation signal and a first symbol estimator gives a first estimate of a symbol represented by the received multi-level modulation signal and a second estimator gives a second estimate of a symbol represented by said signal; the output of the first estimator is provided when the first and second ouputs are the same or have a predetermined relationship and an ouput based on the output of the second estimator is provided otherwise.