Re: [Discuss-gnuradio] max throughput USB 2.0

[Marcus D. Leech]

Vincenzo Pellegrini wrote:
> Maximum sustained throughput that we have achieved so far, given our
> chipsets and the USRP's cypress usb interface
> is 32 MB/sec that yields, at 16 bit sample resolution:
>
> 32M /  (2 *2) = 8Msps (complex) ==>8MHz bandwidth (Nyquist)
>             
> 1 factor 2 is for I+Q channels
> the other is for 16bit (=2bytes) sample resolution
>
> of course, at the price of halving sample resolution you can get
> double bandwidth
>
> vincenzo
>
Using 8-bit samples, and a rather beastly machine, I can sustain 16Msps
for my SETI spectrometer application.

-- 
Marcus Leech
Principal Investigator, Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org