Abstract: Mobile communication transmit signals are digitally generated for signal processing and/or D/A conversion of the transmit signals of different mobile radio standards. In the novel method only a single system-independent clock rate is generated and, accordingly, only exactly one clock frequency generator is arranged on the chip. For this purpose, the signal processing path of each mobile radio standard has at least one interpolator, particularly an asynchronous interpolator, for converting the transmit signals to a uniform time reference.

Abstract: An additional control voltage is used to adjust then operating point of a power amplifier. The amplitude of the control voltage is a measure of the maximum gain needed during the current time slot and which is already provided to the power amplifier before the beginning of the active time slot. This enables an individual adjustment of the operating point so that the power consumption can be reduced.