Re: [Discuss-gnuradio] Maximal signal bandwith for the usrp

[Eng. Firas]

Hi,

USRP can transfer data at maximum of 32MB/s using its USB2. When the data
are 16 bit wide (16bit I and 16 bit Q) then maximum complex transfered data
will be 8 Msps which gives idealy maximum 8 MHz bandwidth. However, if we
use 8 bit data wide ( 8bit I, and 8bit Q), then maximum transfer will be 16
Msps complex data. This means, the USRP can process signals up to 16 MHz.

Firas


JALLON Pierre 201932 wrote:
> 
> Dear all,
> 
>  
> 
> According the USRP v4 description:
> 
> http://www.ettus.com/downloads/usrp_v4.pdf
> <http://www.ettus.com/downloads/usrp_v4.pdf> 
> 
> the usrp is able to process signals up to 16MHz. 
> 
>  
> 
> As the USB port is limited to 60MB/s, and if the samples are coded on 32
> bits (16 for Q and 16 for I), the maximal bandwidth equals 15MHz.
> 
>  
> 
> Which version is correct?
> 
>  
> 
> Furthermore, considering that the first ADC works at 64Ms/s, the
> available rate for the USB equals:
> 
> 32/2 (is it available ?)
> 
> 32/3
> 
> 32/4
> 
> 32/5
> 
> ...
> 
> 32/256
> 
>  
> 
> Am I right ?
> 
>  
> 
> Thank you for your answers,
> 
>  
> 
> Pierre Jallon
> 
> 
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> 
> 

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