Re: [Discuss-gnuradio] Highest Datarates with GNURadio

[Tom Rondeau]

On Tue, Jan 4, 2011 at 6:48 PM,  <address@hidden> wrote:
>
> Hi All,
>
> I started working with GNURadio a few months ago as a platform for use with
> a Visual Light Communication front end.  I've had some good success with the
> basic benchmark testing and implementation of a few basic tests with GRC,
> but I'm curious as to what datarates have been achieved within the GNURadio
> community.
>
> As of now, I've been able to reach rates of 4Mb/s with GMSK and BPSK
> modulation and I'm pretty sure I've reached the limits of what my PC's can
> handle in real time (I seem to be getting errors occurring mostly from
> system overruns).  I haven't gone into testing with the OFDM blocks or
> higher order modulation schemes, but I wanted to see what type of rates I
> should expect.


That sounds about right. The data rates are limited by the bandwidth
you can pull in from the front end (USRP in this case) and the speed
of your computer. So your computer's hardware plays a big role if
you're looking for comparisons.

As a note, as we start to integrate VOLK functions into GNU Radio
blocks, we should see an increase in performance and therefore an
increase in the possible datarates.

Tom


> I'm using the system mostly as a testbed for the time being, so my thought
> is to do the signal processing offline (to / from a file) and have the
> transmission simply sending and receiving from a file.  If anyone has
> suggestions or examples of how to do this it would be greatly appreciated.
>
>
> Thanks in advance for any thoughts,
>
> Michael Rahaim
> Graduate Research Assistant
> Smart Lighting Engineering Research Center
> Boston University
> address@hidden
>
>
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