Patent ID: 8406340

Claim:
An apparatus, comprising: a modulator for processing digital data thereby generating at least one codeword; a digital to analog converter (DAC) for processing the at least one modified codeword thereby generating an analog signal; a synthesizer for providing a plurality of distortion terms, each respective distortion term based on the at least one codeword or at least one portion thereof, corresponding to at least one DAC operational characteristic; a plurality of narrowband filters for receiving the plurality of distortion terms, such that each of the plurality of narrowband filters for receiving a respective one of the plurality of distortion terms, thereby generating a plurality of narrowband filtered distortion terms; a plurality of adapters for modifying at least one of the plurality of distortion terms, such that each of the plurality of adapters for receiving a respective one of the plurality of narrowband filtered distortion terms, thereby generating a plurality of adapted distortion terms; a combiner for combining the plurality of adapted distortion terms or a subset thereof thereby generating a combined signal; a coupler for outputting at least a portion of analog signal; a frequency selective filter for selecting a spectral band component of the at least a portion of analog signal; a power detector for measuring power of the spectral band component; and a controller for directing operation of at least one of the plurality of narrowband filters, the plurality of adapters, the synthesizer, and the modulator based on the measured power of the spectral band component; and wherein: at least one of the plurality of distortion terms operative for reducing distortion associated with the analog signal.