| 摘要 |
A method and an apparatus. The apparatus includes: a non-linear amplifier for generating an amplified signal, wherein a non-linearity of the non-linear amplifier, unless compensated by a provision of a pre-distorted signal, broadens a spectrum of the amplified signal from a desired spectrum to a broadened spectrum; a partial signature receiver, for receiving the amplified signal and for generating a sensed partial signature that represents spectral components of the amplified signal that belong only to a sampled spectrum that is narrower than the broadened spectrum; a configuration module, for receiving the sensed partial signature and for selecting, based on the sensed partial signature, a selected set of pre-distortion coefficient values that once applied by a signal processing module provides a best compensation to the non-linearity of the non-linear amplifier out of multiple sets of pre-distortion coefficient values that are available to the configuration module; and a signal processing module, for receiving an input signal and the selected set of pre- distortion coefficient values, and for generating a pre-distorted signal by pre-distorting the input signal by utilizing the selected set of pre-distortion coefficient values and for providing the pre-distorted signal to the non-linear amplifier. |
