On Sun, Mar 04, 2007 at 10:16:21PM +0200, address@hidden wrote:
> On 3/4/07, Eric Blossom <address@hidden> wrote:
> >>
> >> Hm. Looks like I got my mailing lists crossed. This was intended for
> >> the Open Graphics list, but at least you know what I'm trying to do
> >> now... Anyone interested?
> >
> >Sure, I'm interested.
> >
> >We've got tons of signal processing code that could be useful, and of
> >course you are free to reuse it all under the terms of the GPL.
> >
> >Keep us posted regarding your project, and feel free to discuss
> >both the h/w and s/w here. The more the merrier.
> >
> >Eric
>
> Thank you for your reply, Eric.
>
> The general idea behind the project is that since squeezing the
> signals over USB requires a whole lot of effort and hardware, if I
> could refrain from the squeezing I'd save a whole lot of cash in
> buying new hardware. However, this does means that the CPU will have
> to handle the data instead. It'll be about 200MBps, and I'm still
> unsure about how doable that is. If I could use the FPGA to do some
> pre-processing of the data, I might be able to lower the hardware
> requirements a bit... Most of us geeks aren't lacking in the CPU cycle
> dept, but I'd like this to be affordable to as many people as
> possible.
>
> I don't know Verilog, never written that complex C-code before, and
> never designed a PCB, so I have a lot to learn before I can truly get
> started. Lucky for me I love learning things that are of use! =)
>
> You had a $300 version of the USRP that you showed in that recent
> video where you presented the project... Are the design files for that
> available anywhere so I don't go reinventing a whole lot of wheels?
Matt Ettus sells the USRP. Lot of folks are using them. See http://ettus.com
Why do you think you need 200MB/s for this project?
That would imply that you have an RF front end that had an IF that was
about 50MHz wide. Is that the case?
There will be an version of the USRP available later this year that
has a gigabit ethernet interface. I'm hoping to be able to get
100MB/s through that.
Eric