Patent ID: 8411791
Filing Date: 2013-04-02
Classification: H03M,H04B

Abstract:
1. An apparatus, comprising: a modulator for processing digital data thereby generating at least one codeword; a first digital to analog converter (DAC) for processing the at least one codeword thereby generating a first analog signal; a stop band filter for filtering the first analog signal thereby generating a filtered, first analog signal; a synthesizer for providing at least one distortion term, based on the at least one codeword or a portion thereof and a control signal, corresponding to a frequency band of the first analog signal; an adapter for modifying the at least one distortion term based on at least one frequency selective measurement corresponding to the filtered, first analog signal or at least one additional signal derived there from; a second DAC for processing the at least one distortion term thereby generating a second analog signal; a combiner for combining the filtered, first analog signal and the second analog signal thereby reducing distortion within the filtered, first analog signal thereby generating a combined signal; and a controller for generating the control signal in accordance with dithering operations based on a measurement associated with the combined signal.