Anything can be sampled if the sampling rate is at least twice the signal bandwidth. Your problem will be finding a sampler that is fast enough and with low enough jitter as well as a ADC that is fast enough. I suspect that you are venturing into an expensive hardware area.
Thanks. Cost isn't a problem. I'm more concerned whether there're samplers available to do the job properly and also the other parts (DSP platform, ADC, DAC). Any particular manufacturers or part numbers???