Dear Hans,
Attached is the graphs you requested for USRP decimation =250.
Regards,
Firas
http://www.nabble.com/file/8515/%5B0%201%5DMHz%2C%20decimation%3D250%2C%20CIC%2C%20HBF%2C%20CIC%2BHBF%20Response.JPG
[0 1]MHz, decimation=250, CIC, HBF, CIC+HBF Response.JPG
http://www.nabble.com/file/851
I've continued to hack away at the wx GUI stuff, primarily for a demo
tomorrow and this coming Monday. But in the process I've been trying
to figure out what's going on with the Linux-based "aU"s that folks
have brought up in the recent past. I haven't figured out what's
going on, is the
Unfortunately, I had to cancel my trip to Dayton at the last minute.
Ettus Research will not be represented there this year, but we hope to
be back next year.
Sorry for any inconvenience this may cause.
Matt
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On Thu, May 17, 2007 at 08:18:13AM -0700, Eng. Firas wrote:
>
> Dear Matt,
> Dear Eric,
>
> Is there away to disable (or bypass) the USRP FPGA DDC half band filter? I
> want to get the samples directly from the CIC decimation filter and do the
> low pass filtering by software. I developed a MATLA
On Thu, May 17, 2007 at 08:06:22AM -0700, Hans Glitsch wrote:
> Hello,
>
> Thank you for the graphs. I wasn't aware that there was a HBF after the CIC.
> Yes, I'd like to know the frequency response of the whole usrp from input to
> output when I decimate by 250.
>
> Thank you to everyone for
Hi,
Thank you very much for your help. Can you post the output of your matlab
program for 250 total decimation? I would do it myself with your m file,
but I don't have matlab.
Thanks,
Hans
- Original Message -
From: "Eng. Firas" <[EMAIL PROTECTED]>
To:
Sent: Thursday, May 17, 2
Dear Friends,
Attached is a complete MATLAB based USRP DDC frequency response Analysis
figures. The USRP DDC decimation rate was 64. The CIC filter response
(decimation =32), HBF response (decimation =2) and cascaded CIC + HBF (total
decimation =64) response figures are attached. The MatLab sourc
Hi all,
I am just getting started on GNU radio, I was hoping I could get some advice on
some simple AM envelope detection. All I would like to do is detect whether or
not there is a signal (ie carrier on) and pipe either ON (ie high signal 1) or
OFF (ie low signal 0) to a general IO pin or ev
Thank you Brian & Matt
Using Matt HBF coefficients given by the verilog file [coeff_rom.v], I did
the HBF frequency response analysis by MATLAB FDATOOL. Attached is the USRP
HBF result frequency response. As we can see, there is a 6 dB passband gain.
In my next step, I will try to provide the f
Eng. Firas wrote:
Hello,
I can give you a precise MATLAB based simulated USRP frequency response. All
what I need is the HBF coefficients. So this is an open invitation to our
dear Matt to give us his designed USRP HBF coefficients or frequency
response.
Firas,
The coefficients are here:
On 5/17/07, Eng. Firas <[EMAIL PROTECTED]> wrote:
Hello,
I can give you a precise MATLAB based simulated USRP frequency response. All
what I need is the HBF coefficients. So this is an open invitation to our
dear Matt to give us his designed USRP HBF coefficients or frequency
response.
Readin
Hello,
I can give you a precise MATLAB based simulated USRP frequency response. All
what I need is the HBF coefficients. So this is an open invitation to our
dear Matt to give us his designed USRP HBF coefficients or frequency
response.
Firas,
Hans Glitsch wrote:
>
> Hello,
>
> Thank you for
Dear Matt,
Dear Eric,
Is there away to disable (or bypass) the USRP FPGA DDC half band filter? I
want to get the samples directly from the CIC decimation filter and do the
low pass filtering by software. I developed a MATLAB based professional
100KHz bandwidth digital down converter as shown in t
Hello,
Thank you for the graphs. I wasn't aware that there was a HBF after the CIC.
Yes, I'd like to know the frequency response of the whole usrp from input to
output when I decimate by 250.
Thank you to everyone for the help so far,
Hans
- Original Message -
From: Firas abbas
Hans:
I don't think you really want the CIC transfer function but the transfer
function of the convolution of the half band filters and the CIC since
that is the total transfer function through the FPGA. Am I right?
Bob
Hans Glitsch wrote:
Hello,
What is the stop band of the FPGA CIC fil
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