> Talking hypothetically here... there's no way you could decode every single
> one of those data streams on the fly, at least, not without investing some
> serious cash.
You could dedicate time. You could do some preprocessing on the FPGA
(demod) to reduce the amount of data to bring back.
> Surely it would be better (and probably more fun) to get
> around the channel hopping problem, rather than just throwing resources at
> something which is probably overkill for what you're trying to do?
Actually, even if you could hop, that would not help picking up a
_specific_ call ..
The info about what TMSI the channel is assigned to who is only
transmitted on the dedicated channel so you need to follow _all_
immediate assignment and there can be a lot at the same time (or
close) so you need to follow a lot of channels at once, all at
different frequencies ...
If you can hop, you can pickup random transmission. Good enough for a
demo the thing isn't secure tough !
Sylvain
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