Re: [Discuss-gnuradio] bandwidth for USRP

[Matt Ettus]

> doesn't it look like the USB 2.0 is a heavily constraining bottleneck?
>  
Yes, USB2.0 is the bottleneck.

> And, if I'm not wrong about this, will it be possible in the future to
> have a USRP <--> PC interface which doesn't limit us so much.
>  
Other than 802.11, there aren't many applications that require more than 
8 MHz of bandwidth.  Radio astronomy is one, but you can use fewer bits 
per sample with RA.  It is not uncommon to use 1 or 2 bits per sample, 
which would allow you to cover 128 and 64 MHz respectively. 

There is an 8-bit per sample mode in the USRP which will allow you to 
get 16 MHz of BW across the bus.

Matt