Hmm I agree a cleanup is necessary.
Will get back.
Thank you guys.
On Wed, Feb 27, 2019 at 13:47 Michael Dickens
wrote:
> I'll second what Marcus said: a little tidier GRC flowgraph would help.
>
> That said, it looks like you're using nice and simple GR OFDM for Tx and
> then you've expanded
Some pointer that might help you.
- No, the samples are not completely real in BPSK until the point in signal
processing chain where you decimate the signal down to the symbol rate.
>From what I understand your problem, and given that your purpose is to find
the correlation peak instead of
To clarify a confusion in my last email, by "until the point in signal
processing chain where you decimate the signal down to the symbol rate", I
meant the stage just before quantization; otherwise carrier recovery in
BPSK still needs to work with complex samples at symbol rate.
Cheers,
Qasim
Hi ARob,
You're right to presume that – because that's how the math behind the
DFT works out! So, no, you can't change that.
What you can do, of course, make a system with the correct resulting
sampling rate (as calculated from desired spacing times number of
bins), and just resample that to the
Hello GNURadio Users,
Is it possible to specify the frequency spacing of the carriers in the OFDM
Transmitter Block or Carrier Allocator block? My assumption is the carrier
spacing is calculated from the sampling rate and the FFT length (e.g, if
sampling rate is 640k and fft length is 64, is the
I'll second what Marcus said: a little tidier GRC flowgraph would help.
That said, it looks like you're using nice and simple GR OFDM for Tx and then
you've expanded the GR OFDM Rx into its hier block equivalent form ... then
connected the output to PER and BER blocks and output those results
Hi Nishant, I'm afraid you'll have to first tidy up your flowgraph.
I've been staring at it for a while, and it's just too confusing.
Best regards,
Marcus
On Wed, 2019-02-27 at 11:41 -0500, Sai Parepalli Laxman wrote:
> Hello,
>
> This is Nishant.
>
> I have a pair of N210 USRP modules and
Cinaed;
(inline comments)
On 27/02/19 05:37, Cinaed Simson wrote:
There's problem with the grc file - it doesn't load into grc.
The embedded python code is using "" instead of ">" - at least that
was my guess.
I don't know. It seams to work as is on my machine (ubuntu 16.04).
I do also see
So, that means we're deep in the realm of signal debugging.
Make sure your time- and frequency-domain signals look like you expect
them to look. Get to know where the limits of your system are, and make
sure you're far enough from them. For example, slightly increase your
gain until you see
Hi all,
great news! We are once again accepted as mentoring organization for Google
Summer of Code. Another great opportunity to bring fresh talent into the
community!
So, to all students: APPLY! =)
We have a great selection of projects waiting, from DSP-heavy filter design,
channel
Hi all,
Thanks for the responses. Ultimately, we won't be able to share a clock
source directly, and I don't have the right cables right now to link them
for troubleshooting. Even when I try to use the RF loopback modes though, I
do not see a correlation peak. Firmware-based loopback works as
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