Abstract: An apparatus and method are provided for communicating data between a first and a second terminal unit, wherein at least one of the terminal units is a mobile terminal unit. The apparatus comprises a base station and a number of antenna units each linked to the base station and operable to transmit, wirelessly, modulated data signals received from the base station, and to forward modulated data signals, received wirelessly, to the base station. The base station has a transmitter for transmitting modulated data signals to each of the antenna units for wireless transmission, a receiver for receiving modulated data signals forwarded by at least one of the antenna units and a demodulator for demodulating received modulated data signals that have been modulated according to a predetermined modulation scheme.