Patent ID: 7894536

Claim:
A compensation system programmed to mitigate errors associated with a conversion system, the compensation system comprising: a digital error model programmed to provide an emulated error signal as a function of an input signal that is quantized in a predetermined number of one or more levels, the digital error model having parameters adaptively adjusted based on a signal of the conversion system to emulate error characteristics associated with at least a portion of the conversion system; and a calibration system that provides a calibration signal that is substantially free of in-band frequencies to the conversion system, the calibration system calibrates the parameters of the digital error model in a calibration mode by adapting the parameters of the digital error model during the calibration mode based on content of an output signal of the conversion system in response to the calibration signal that is provided to the conversion system, and wherein the calibration system includes an estimator having: a first delay element that receives the quantized signal; a bit splitter that receives an output from the delay first element; a matrix multiplier that receives an output from the bit splitter; a gain element that receives an output from the matrix multiplier; an adder that receives an output from the gain element; and a second delay element that receives an output from the adder and that provides its output to the adder.