I’m curious what people do with the wideband capability of the
gnuradio/usrp and what is the widest bandwidth signal one can really
process with available computers?
For reference I have a ~2.4 GHz core 2 duo laptop. For a 200 kHz FM
demodulator I consume about 40% of one cpu. That’s pretty much the
simplest useful thing anyone can do so that maps to my laptop might be
able to process 1 MHz bandwidth continuously.
Similarly, my hard drive can’t really keep up with 32 Mbyte/s recording.
So if samples are 16-bit and you really can’t afford lost data it seems
like recording is limited to maybe 10 MHz or so bandwidth.
However, with gigabit Ethernet you can send 100 Mbyte/s or more. What’s
the most anyone has recorded or processed continuously? What level of
compexity was the processing?