Hi,
While trying to convert gr-dab to gnuradio 3.8, I've stumbled upon
some problems with the GRC models.
I have option attributes like this:
https://github.com/andrmuel/gr-dab/blob/9bbaadfc159e1d493c9d9e3e4f11ac16550a1fa4/grc/dab_ofdm_demod.block.yml#L14
Then "vlensize" is used here:
me know if you see any potential problems with this approach.
I have a made a pull request to the master branch with the implemented
concatenation block.
Cheers
Ruben
2017-03-31 12:06 GMT+02:00 Ruben Undheim <ruben.undh...@gmail.com>:
> Hi,
>
> Is there a good way to find out fro
> What about using tagged streams or just a tag on the last sample? Is
> that an option?
So I have been trying out this for a while now. I have created
modified versions of "file_source", "vector_source" and "head" which
all add an "end" stream tag to the last sample. It has turned out VERY
Thank you both for answering.
> I would totally agree with Marcus. Especially you first approach can't
> work reliably.
It appeared quite stable for file_source, but I got some problems
today with one of my custom blocks which suddenly caused the following
block to be called with ninput_items[0]
Hi,
Is there a good way to find out from inside general_work that the last
sample has arrived? (such as from vector_source_X or file_source)
If I consume (ninput_items[0] - 1) samples every time general_work is
called, I will eventually get general_work called with ninput_items[0]
== 1. Would
Hi Matthias,
I stumbled across two gnuradio-related projects [1] and [2]. [2] has last
change several years ago. [1] has last change 7 months ago and is written by
Andreas Müller (put in BCC) who also wrote a semester thesis [3] about DAB -
Software Receiver Implementation which is quite
Hi,
I'm using the USRP1 and the UHD driver together with gnuradio. Often,
especially at high sample rates (8MHz), the spectrum observed in the
fftsink becomes distorted after a while. It becomes almost mirrored.
Typically it happens after a couple of overruns. I have tried finding out
the reason
Hello, thanks
Yes, the noise-dip is frequency sensitive. I have not been able to fully
characterize it because at
some frequencies it's bad and at others it's quite good, and there is not
really a understandable pattern.
At VHF-frequencies, it's at least quite bad before I run the script.
I tried
I've discovered that after I turn on the USRP and start receiving there is
some noise which because of some strange
reason disappear when I start the transmitting part of the board. For
frequencies around 150MHz with the WBX-board
and USRP1, the noise floor is reduced by 5dB, and seriously
be the cause of this strange
behavior?
What happens when the usrp sink is initialized that would cause the receive
noise floor to fall?
Regards, Ruben
2011/5/5 Ruben Undheim ruben.undh...@gmail.com
I've discovered that after I turn on the USRP and start receiving there is
some noise which because
Hey, thanks
You are right. I'm using the WBX-board. I wrote it in the first post, but I
understand that
you didn't see it because of the mess with my split-up posting.;)
Anyway, I am using a simple indoor antenna, and I get the same result with a
2m whip as
a log-periodic antenna (which btw.
solution to a problem that I would
like
to understand.
Ruben
2011/5/5 Ruben Undheim ruben.undh...@gmail.com
Hey, thanks
You are right. I'm using the WBX-board. I wrote it in the first post, but I
understand that
you didn't see it because of the mess with my split-up posting.;)
Anyway, I am
a while.. However, when
it's in slot B, everything's fine)
Ruben
2011/1/20 Ruben Undheim ruben.undh...@gmail.com
Thanks
I am using the traditional driver. Maybe I can try to use another computer
or to put the board in the other slot,
and see if the problem remains the same.
Ruben
2011/1/20
Hello.
I just wondered if anyone else has experienced that the WBX stops sending
the quadrature component of the complex signal after a while. This happens
especially if I have sliders for setting the frequencies or the gain, and
the sliders are slided. (so that a frequency change control signal
Thanks
I am using the traditional driver. Maybe I can try to use another computer
or to put the board in the other slot,
and see if the problem remains the same.
Ruben
2011/1/20 Marcus D. Leech mle...@ripnet.com
On 01/20/2011 11:40 AM, Ruben Undheim wrote:
Hello.
I just wondered
I have put together a little beginner GUI, which can demodulate FM, AM and
SSB from files and from the USRP by pointing at a FFT-display. Since I am
quite new myself, I did this as a beginner-project. I just wondered if
some other of you guys had made something similar, and could post your
have to return it for fix?
Ruben
From: Ruben Undheim [EMAIL PROTECTED]
To: discuss-gnuradio@gnu.org
Subject: [Discuss-gnuradio] LED not blinking
Date: Fri, 07 Jul 2006 20:33:12 +0200
I have just received the USRP, connected the basicrx and basictx, installed
all the software, connected
I have just received the USRP, connected the basicrx and basictx, installed
all the software, connected the USB 2.0 cable and connected power to it with
the USRP power adapter.
But when I read dmesg I only see these messages:
[17179697.552000] usb 3-5: new high speed USB device using ehci_hcd
18 matches
Mail list logo
