A T-DAB field trial using a low-mast infrastructure

Between October 2004 and July 2006, the University of Twente carried out a technical T-DAB field trial in Amsterdam which was commissioned by the Dutch Ministry of Economic Affairs. For this trial, a low-power low-mast T-DAB pilot network was constructed both for band III (channel 12B) and the L-band (channel LH). This field trial provided evidence that a low-power low-mast network topology can coexist with a high-mast high-power network in an adjacent channel. Using gap fillers, the holes in the service area of the high-mast high-power network can be neutralized effectively. Other possible solutions such as a smaller vertical opening angle of the antenna system were not investigated. The minimum power level of the gap fillers should be 24 dB below the output power of the low-mast