Sure you can quantize the output but that is not going to help your accuracy. Today's Ghz CPU is 64bit, today's Ghz ADCs are 8 to 16bits. This gets you ~3 t

Sure you can quantize the output but that is not going to help your accuracy. Today's Ghz CPU is 64bit, today's Ghz ADCs are 8 to 16bits. This gets you ~3 to ~5 decimal sig figs for analog and ~15.9 decimal sig figs for 64bit floating point. That's assuming your analog side is perfect, which is unlikely to say the least. http://www.ti.com/data-converters/adc-circuit/high-speed/rf-sampling.html http://www.ti.com/data-converters/adc-circuit/high-speed/rf-... Also note the fast ones require 1+ watts per channel and cost $700+ each. Not cheap in power or in money.