DIGITAL RADIO SIGNAL FREQUENCY TRANSLATION AND OVERSAMPLING DEVICE AND METHOD

摘要

A method wherein signal samples are provided by a COFDM modulator and samples with an amplitude interpolated (11) between the values of the adjacent samples in the digital train are inserted between said signal samples, whereafter the resulting signal samples are digitally transferred (11) to a sub-multiple intermediate frequency of the interpolated sample frequency prior to the analog conversion (12) thereof. The method is useful in a digital audio broadcasting transmitter.