Dither methods for suppression of data-dependent activity variations

A method for minimizing variations in data-dependent power variations when processing an input signal, the method comprising:

• summing the input signal with a dither signal to produce a dithered input signal;
• processing the dithered input signal to produce a dithered output signal;
• and
• removing effects of the dither signal from the dithered output signal to produce an output signal.

A system for minimizing data-dependent power variations in a device receiving an input signal, the system comprising:

• a signal processing function;
• a dither generator producing a dither signal;
• a summer summing the input signal and the dither signal to produce a dithered input signal, the dithered input signal being processed by the signal processing function resulting in a dithered output signal;
• a second signal processing function processing the dither signal to produce a processed dither signal;
• and
• a second summer subtracting the processed dither signal from the dithered output signal to produce an output signal.