An interference cancellation method for use in a communications system in
which a plurality of communication paths are arranged to transmit and
receive respective analogue signals comprises effecting an initialization
phase to calculate, for each path, the interference effects of the
signals transmitted on that path on the signals received on each of the
other paths, and storing for each a plurality of weighting factors
representing the interference on each of the other paths respectively.
During transmission, said weighting factors are used to generate from the
transmitted signal on one of the said paths and to apply said
cancellation signals to signals received on said other paths, thereby to
cancel the interference effect of said transmitted signals.