We discuss photonic generation of high-speed THz wireless signals, with particular reference to how multiband signals could be distributed over fibre networks from a central baseband unit equipped with a pool of optoelectronic components, allowing the remote antenna unit to be very simple, while delivering flexibility in terms of data rate and THz carrier frequency. The proposed scheme is demonstrated experimentally by generating a 5-channel multiband signal with aggregate data rate of 100 Gb/s and investigating the performance of each 20 Gb/s sub-band after transmission over a wireless link in the 220–280 GHz band.