| 摘要 |
The invention relates to a method for the linearization of a high-frequency high-capacity amplifier by means of adaptive digital predistortion of the input signals of the amplifier ( 5 ) by determining correctional values that are approximated from DESIRED sender signals detected at the amplifier input and ACTUAL sender signals detected at the amplifier output. To this end, I/Q data continuously derived from the DESIRED sender signals at the digital base band modulator ( 1 ) and I/Q data derived by a measuring unit ( 4 ) at the amplifier output from the ACTUAL sender signals are fed to a neuronal network for evaluation and for the calculation of correctional values. The correctional values produced are returned to the digital base band modulator ( 1 ) and the data flow flowing from the digital base band modulator ( 1 ) to the amplifier input is predistorted with the correctional values produced in the neuronal network. The device for carrying out the method for the linearization of a high-frequency high-capacity amplifier by means of adaptive digital predistortion comprises a digital base band modulator ( 1 ) that is mounted upstream of a D/A converter ( 8 ), a HF modulator ( 9 ) and the HF high-capacity amplifier ( 5 ). A measuring device ( 4 ) is linked with the neuronal network at the output of the HF amplifier ( 5 ) via a data link ( 6 ) so as to detect the I/Q data and the digital base band modulator ( 1 ) is linked with the neuronal network via an I/Q data link ( 3 ). A correctional data line ( 7 ) links the neuronal network ( 2 ) with the digital base band modulator ( 1 ).
|
