gr-fosphor has been an invaluable tool for debugging physical layers
and enjoying the experience of exploring the EM spectrum.
Too many times I found myself or others trying to use it
in a new setup or in a fast-paced OS (like Arch Linux) just to find
it is broken, hard to install/repair or uninst
*Zruput* establishes link with GNU Radio!
On June 14th the first edition of *Zruput Digital Communications*
conference will take place at Buenos Aires, Argentina.
The new demands that society has put on telecommunications and the
technological development trying to satisfy them have given birth t
k having a generic ZMQ block would be awesome.
> Do you have an OOT module or block that does what you listed: a generic ZMQ
> block? If so, how do I gain access to it? This would save me lots of time!
> Thanks! - MLD
>
> On Thu, Jul 28, 2016, at 10:21 PM, Francisco Albani wrote:
&
Michael, I found the need to do the same for some applications. I also
needed to choose between bind and connect (I made this a parameter of my
block).
Wouldn't be better to have just one sink and one source with selectable
options, like:
* socket_type: REP/REQ/SUB/PUB/PUSH/PULL
* method: bind / c
d Via USB3.0 controller, I can run 20 Msyms (40 Msps) reliably for a 24
> MHz wide signal. Above that rate, it falls apart with underruns.
>
> With an optimum USB3.0 controller capable of 60 Msps, it should be
> possible to do a commercial satellite transponder 36 MHz wide signal w
35, 548 and 680 in the PL framer block.
>
> Here's a link that explains why zero stuffing is the correct way to do
> interpolation.
>
> http://www.dspguru.com/dsp/faqs/multirate/interpolation
>
> Ron
>
>
> On 06/15/2016 02:37 PM, Francisco Albani wrote:
>
> Hi to all!
Hi to all! Specially to Ron Economos! (and thanks for sharing your work)
I was trying to understand the example *dvbs2_tx.grc* and, after putting
graphical sinks after many blocks, I noticed that the one called "Physical
Frame Layer" outputs one complex zero after each constellation point (see
att
I couldn't in the time I had. Does anybody already
know it?
Another question I have is: will set_min_output_buffer have any effect on a
running flowgraph? Is that a good idea?
Thanks!
2016-03-14 21:26 GMT-03:00 Bastian Bloessl :
> Hi,
>
>
> > On 14 Mar 2016, at 16:56, Franc
Hi Anselm.
Go to http://lists.gnu.org/archive/html/discuss-gnuradio/ and search this
"Asynchronous source with zeros in between"
You will find an email I wrote to this list asking a similar question. I'm
not pasting a link here because I couldn't find the starting message; the
thread is split in
Hi again!
I wrote a custom message block that produces a PDU with complex samples. My
plan is to connect it to a PDU to Tagged Stream and then to a UHD Sink
(with len_tag_name = 'packet_len').
The goal is to transmit a burst for each packet. This packets are made of
approximately 14k samples and
crafting a lax version of Ts2PDU.
2016-03-13 5:48 GMT-03:00 Francisco Albani :
> Hi!
>
> First of all, to avoid an infinite length message subject, I left it a bit
> inaccurate. Sorry for that.
>
> What I really want to ask is if there is any combination of "official"
Hi!
First of all, to avoid an infinite length message subject, I left it a bit
inaccurate. Sorry for that.
What I really want to ask is if there is any combination of "official"
blocks (or python tricks) that can achieve the same error handling as UHD
Sink when comes to missing length tags.
UHD
TER Quadrature Demod? Will the "time_est"
tag make sense?
Many thanks!
2016-01-28 20:03 GMT-03:00 Tom Rondeau :
> On Thu, Jan 28, 2016 at 11:04 PM, Francisco Albani <
> francisco.alb...@gmail.com> wrote:
>
>> Hi to all.
>>
>> I want to test if the bloc
Hi to all.
I want to test if the block Correlate and Sync improves my GFSK receiver,
so I started modifying ./gr-digital/examples/demod/test_corr_and_sync.grc .
1) I replaced the BPSK modulator (with rrc filter) by a Chunks to Symbols
[-1,+1] followed by a Interpolating FIR with gaussian taps.
2)
. Are you sure my block does the
same?
Thanks and Bye!
2016-01-08 11:47 GMT-03:00 Tim O'Shea :
> You may want to look at gr-eventstream source block, this is exactly what
> it is intended to do, precisely timed if desired
>
>
> On Mon, Nov 30, 2015, 2:38 PM Francisco Albani
Line nº 40 has an unnecesary call to "max". It should be:
n_consumed = min(n_ready, n_demanded)
-- Forwarded message ------
From: Francisco Albani
Date: 2016-01-07 20:24 GMT-03:00
Subject: Re: [Discuss-gnuradio] Asynchronous source with zeros in between
To:
Cc
s, accepting messages, and writing to the message queue of
> such an message_source.
>
> Best regards,
> Marcus
>
> On 01.12.2015 16:45, Tom Rondeau wrote:
>
> On Mon, Nov 30, 2015 at 2:37 PM, Francisco Albani <
> francisco.alb...@gmail.com> wrote:
>
>> Hi t
This reminds me of http://bash.org/?5273
Just to make this answer not completely pointless:
* Did you search google for narrowing your search to the UMTS uplink
channels? https://en.wikipedia.org/wiki/UMTS_frequency_bands
* Did you try raising the RX Gain? Try something like 50 dB. 76 is the
maxi
Hi to all.
(this email subject may be inaccurate)
I need a block with the following characteristics:
* Input port for messages.
* Output port for complex/float/byte/etc. stream.
* Forecast always answers 0.
* Work function first check the message queue. If there are no messages,
emits zeros; if
I'm building gnuradio right now on Arch Linux to get thrift working. Arch
official repositories only have a 'thrift' package [1], which was not
sufficient.
I had also to install from the Arch User Repository, 'python2-thrift' [2].
Now I get the correct cmake output.
I have never used Fedora, but
This bears some resemblance to the idea we discussed in the Community
Working Group at GRCON15. Am I right?
:)
2015-09-14 17:33 GMT-03:00 Martin Braun :
> Hey,
>
> for those stragglers out there, who, like me, take a while to hear about
> new websites, this is interesting:
>
> http://www.sigidwi
helpers internal to each's
>> respective company. So, just guessing from the above numbers I'd say
>> something like 30-35 people had their hands in making sure GRCon15 came off
>> smoothly. Hope this helps! - MLD
>>
>> On Tue, Sep 8, 2015, at 07:05 PM, Franci
Hi!
I'm curious about how many people assisted to the all the annual
conferences, specially to the last one.
And maybe there are more interesting statistics to know.
Thanks!
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
https://lists.gnu.o
Wang: Sounds good! Thanks! Did you try it?
Jean: many many thanks for sharing all the scripts! Your paper has caught
my attention. I will print it and read it.
Marcus: I was not expecting to "see" the signal because I already knew it
was under noise floor. My conclusion of "signal absence" was af
Hi!
After googling a lot and searching in this lists archive, I couldn't find
any recording of IQ samples from GPS signals.
I'm trying to record one myself, with no luck so far because (I suspect) of
a malfunctioning active antenna.
Would anybody with the right equipment be so kind to record som
:)
(Are you sure you meant to thank me? Hahaha... I only mentioned the
underlined parameters! :P )
Sometimes I still find myself looking for the cause of a stopped flowgraph,
to finally find I connected two streams with different sample rates to the
same GUI sink.
2015-08-02 14:25 GMT-03:00 Tom
>From Matlab MM documentation [1]:
"[...] Typically, the input signal is the output of a receive filter that
is matched to the transmitting pulse shape. [...]"
Assuming the MM Gnuradio implementation has the same hypothesis on the
input signal (anybody can confirm this?), I deduced this block is
Kevin: remember that the parameters available for changing during runtime
are underlined in the block settings window.
2015-07-27 13:45 GMT-03:00 Marcus Müller :
> Hi Kevin,
>
> On 27.07.2015 17:53, mcquiggi wrote:
>
> Hi Marcus:
>
> I’m just following up on my Repeat block question. I figured
1) The last time I checked the code, I arrived at the same conclusion.
2) Its just a name for a complex number in which the real and imaginary
parts are taken from a gaussian distribution. I think it comes from the
fact that a 2D gaussian random vector radius has Rayleigh distribution.
You didn't
Hi Monika.
Remember that the Virtual Source's output is just the input of the
Virtual Sink with the same ID.
It is a convenient way of making a nicer and tidier graph without so
many "wires".
I use them also as a "signal copier":
(something X) ---> Virtual Sink ID 1
Virtual Source ID 1 >
ck
> which is then connected to the vector source.
>
> Set the vector source to not repeat and you should see what happens in the
> delay block. Make the vector long enough that you can see something useful
> on the plot (maybe range(256)).
>
> On Saturday, May 23, 2015, Fr
2015-05-22 22:46 GMT-03:00 Martin Braun :
> On 22.05.2015 18:13, Francisco Albani wrote:
>> Hi Martin and thanks for your answer.
>>
>> What those zeros added to the original stream align to in the received one?
Excuse me for my bad English. This is what I wanted to write:
cks?
2015-05-22 21:51 GMT-03:00 Martin Braun :
> On 22.05.2015 17:38, Francisco Albani wrote:
>> Hi, I managed to successfully replicate the results of this tutorial:
>>
>> https://gnuradio.org/redmine/projects/gnuradio/wiki/Guided_Tutorial_PSK_Demodulation
>>
>> a
Hi, I managed to successfully replicate the results of this tutorial:
https://gnuradio.org/redmine/projects/gnuradio/wiki/Guided_Tutorial_PSK_Demodulation
and, of course I understand the reason for a delay between the bits of
the source and the receiver.
But then I was struck by this: considerin
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