Patent ID: 9071207
Filing Date: 2015-06-30
Classification: H03F

Abstract:
1. A transmitter comprising: a power amplifier configured to amplify a modulated concurrent multi-band signal to provide an amplified concurrent multi-band signal; and a predistortion sub-system configured to effect predistortion of the modulated concurrent multi-band signal to compensate for a non-linearity of the power amplifier, where the predistortion sub-system comprises a plurality of predistorters each configured to provide predistortion for a different one of a plurality of frequency bands of the modulated concurrent multi-band signal; where at least one predistorter of the plurality of predistorters provides predistortion for a corresponding frequency band of the plurality of frequency bands of the modulated concurrent multi-band signal based on carrier frequency information for the modulated concurrent multi-band signal; and where the at least one predistorter of the plurality of predistorters comprises one or more permanent basis functions that are not a function of the carrier frequency information and one or more temporary basis functions that are a function of the carrier frequency information.