Hi All,
I am having difficulty finding examples for demodulating 8psk
16-32-64-256APSK modulated signals. Does anybody know what the settings
of Constellation Rect. Object for these modulation schemes should be?
Thanks in advance.
Dear All,
I try to measure the phase difference between a delayed signal and a
reference one. I use the following blocks:
Multiply conjugate block (Inputs are the delayed and reference signals)
Complex to Arg
Moving Average
The flowgraph works good when there is no noise. However when I add noise
Dear All,
I have a flowgraph where I use multiple Standart Blocks.
The Application requires low sample and symbol rates, therefore the buffers
between the blocks cause a lot of Latency.
Is there a way to merge the standart blocks or do I have to manually merge
the c++ sources and re-compile them
I want to create a pmt vector and fill it with constant values. I can do
that using pmt.make_u8vector(16, 0xFF).
Now I want to insert a 4 byte header like 0x01,0x02, 0x03,0x04.
How can we add values to a PMT.Vector?
Dear All,
I use the XMLRPC Server to control several variables on the flowgraph
remotely.
What I don't know is how to start, stop the flowgraph. (The documentation
says its possible)
Which commands should I send to the server? tb.start, tb.stop ???
Many thanks in advance
Dear All,
We are trying to Demodulate a Phase Modulated Signal (Phase modulated not
PSK).
The SDR is LimeSDR-USB and the DC Corrector is turned off.
At high levels of Signal Input there is no problem.
At low levels, the DC Offset prevents the demodulation.
When we turn ON the DC corrector, PM demo
under-the-hood which machines to use to execute your function.
>
> Reference: https://wiki.gnuradio.org/index.php/Volk#Using_VOLK
>
> On Wed, 6 Nov 2019 at 10:28, mehtap özkan wrote:
> >
> > Dear All,
> > I am using the volk profile application to speed up my gnuradi
Dear All,
I am using the volk profile application to speed up my gnuradio on a
specific PC.
Now I am writing a custom application using the GNU Radio blocks. What
should I do to speed up the custom application?
Which files should I include to benefit from the Volk profile?
Thank you in advance...
Dear All,
I am using 3.7.13.4 under Windows 10.
I wrote a small OOT and was using it without an error.
I moved the entire GNU Radio directory to another windows machine but this
time I got the " Object has no attribute error".
As I moved the entire directory and all the subdirectories, where else
Dear All,
I have recorded a RF Signal for reverse engineering. I found it is a BPSK
modulated HDLC/ Frame Relay data.
The recovered data itself is IP encapsulated, exactly as explained in:
https://www.tutorialspoint.com/ipv4/ipv4_packet_structure.htm
The data itself is UDP.
In summary the rec
Dear All,
I have recorded the output of G3RUH 9600 bps CPFSK transmitter which
complies to the very well known
https://www.amsat.org/amsat/articles/g3ruh/109.html modem implementation.
I want to demodulate the recording using GNU RADIO. The sample rate of the
recording was 1 MSPS and I tried to d
Dear All,
I want to write ablock where:
The output is the the Inverse of the input,
The output is "1" if there is no input.(It acts like a source)
I am confused how to implement the part where the Block behaves like a
Source.
In one mode you need an Input to produce an output (ninput_items_requir
/Guided_Tutorials Chapters 2,3,4 and
> 5 should be an easy read for you at this point.
>
> Best regards,
> Marcus
>
> On Mon, 2019-05-13 at 23:09 +0300, mehtap özkan wrote:
> > Dear All,
> > Is there an OOT block where the input is UnPacked Data and the output
> is U
Dear All,
Is there an OOT block where the input is UnPacked Data and the output is
UART formatted UnPacked data.
The UART Protocol is shown in
http://www.circuitbasics.com/wp-content/uploads/2016/01/Introduction-to-UART-Packet-Frame-and-Bits-2.png
.
___
Dear All,
I have implemented a CPFSK transmitter succesfully using GNU RADIO.
The blocks are PRBS Source->Scrambler (G3RUH)-> CPFSK Mod-> UHD Sink. The
reference HW receiver receives and demodulates the signal quite well.
Then I remove the PRBS Source and place a UDP Source+UART block as the data
Dear All,
I have tried to connect the output of the Scrambler block to a Descrambler
block directly. It didn't work.
However if I connect an Additive Scrambler block to another Additive
Scrambler block it worked flawless.
The flowgraph is attached.
prbs_dene.grc
Description: Binary data
__
Dear All,
I have 2 modulators, A FSK and a BPSK one. Is there a block which can
switch the output of the desired modulator to a Sink. Something like a
switch that has 2 inputs and one output?
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
htt
Dera All,
I have an embedded arm board with limited storage (4 GB eMMC). I suspect
Ubuntu+ GNU RADIO+Phyton will not fit on it.
Does anybody have used GNU RADIO on Ubuntu Server or alternatively on a
small footprint Linux Distor?
I have created a .py file from an .grc file and it has no visual o
Hi All,
GNU RADIO has some great implementation on CUBESAT CCSDS Telemetry
peocessing like gr-satellites etc.
However, if someone would like to test a CUBESAT On Board Computer SW with
GNU RADIO there are no implementations AFAIK. Especially the implementation
of TC Space Data Link Protocol. It se
Dear All,
I want to control a Flowgraph remotely from another computer. We have
found an OOT module called gr-bokeh which is fine for controlling the
flowgraph from a webpage.
Is there another way to control a flowgraph remotely using a stand-alone
application?
___
Based on your calculations, I have decided to get a LIMESDR-PCIe.
The sampling rate will be 122,88 MSPS which will give 61.44 MHz I and
61.44 MHz Q.
That will be enough to demodulate a 50 MHz wide QPSK modulated signal.
I am not sure if I can decimate the 122,88 MSPS by 2 and still being able
to
Dear All,
Mine is more of a fundamental question.
I have a 50 MHz (3 db bandwidth) wide QPSK signal.
I am aware that Gnuradio blocks can not be used for real time decoding.
In order to record the signal and demodulate it correctly, what should the
minimum sampling rate be?
If the minimum sampling
$30 - $250 budget for a CCSDS modem.
On Sun, Mar 4, 2018 at 5:39 AM mehtap özkan wrote:
> https://discourse.myriadrf.org/t/just-posted-two-
> freelance-jobs/2421?u=booth
>
> If you are interested send me a message.
> ___
> Discuss-gnu
SDS modem.
>
> On Sun, Mar 4, 2018 at 5:39 AM mehtap özkan
> wrote:
>
>> https://discourse.myriadrf.org/t/just-posted-two-
>> freelance-jobs/2421?u=booth
>>
>> If you are interested send me a message.
>> ___
>>
https://discourse.myriadrf.org/t/just-posted-two-freelance-jobs/2421?u=booth
If you are interested send me a message.
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
I need a block which implements different line encoding, decoding schemes
like:
NRZ-M
NRZ-L
NRZ-S
Manchester
RZ
Biphase-L
Biphase-M
Biphase-S
etc...
Is there a block for line encoding/ decoding in GNU Radio.
Thanks in advance
___
Discuss-gnuradio mailin
Dear All,
I have found a B210 clone on e-bay:
The link is :
https://www.ebay.com/itm/1-8MHz-6GHz-SDR-Software-Defined-Radio-10DBM-USB3-0-compatible-with-USRP-B210/182624292437?hash=item2a85418e55:g:GoEAAOSwnK9ZRLRG
Has anyone used this HW with GNU RADIO? Wonder if the chinese have a USRP
e310 clo
I have some more FAQ:
1. Which FPGA will be used Xilinx Artix 7 25T/35T/50T ?
2. Will we be able to write and Upload our own Firmware? If yes what is the
method of programming (JTAG, USB3 etc..)?
3. What is the Utilization %, will customized code fit into the FPGA?
4. Is 10 MHz reference input
Thank you.
Should we adjust the Loop Bandwidth to track the signal correctly?
2017-10-26 14:20 GMT+03:00 Jean-Michel FRIEDT <
jean-michel.fri...@femto-st.fr>:
> costas will do the job as long as your measurement bandwidth includes
> twice the expected frequency offset, see http://jmfriedt.free.fr
Hi All,
I am planning to track a signal from a LEO Satellite which transmits
approx. 100 kbps BPSK.
I wonder which blocks should I use since the carrier offset ranges are:
around -50 kHz (beginning of the pass)
around +50 kHz (at the endof the pass)
Possible blocks are:
PLL Carrier Tracking
Costa
Dear All,
I have a Flowgraph where I set the variables remotely using XML-RPC.
I want to set the file path for the "File Source" block remotely but having
no success.
Please help.
___
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Discuss-gnuradio@gnu.org
https://lists.g
Some years ago I implemented a scrambler block in FPGA for a transmitter.
It produced an output every clock cycle.
Now I try the GNU Radio scrambler/descrambler blocks. They work great if
the data flows continously like from a Vector source or File.
However if I have a discontinous source like a te
Thanks to Marcus Müller I became aware of the Packet TX and RX blocks.
I use the Packet_loopback_hier.grc example. However the example is set to
2 samples per seconds=sps. When I try to increase sps=100, the number of
taps of the RRC filter becomes( 5*sps*nfilts) exceeds its limit.
I get
../.grc_
Dear All,
Whenever I try to use Packet Encoder I always have to wait for the first 2
packets to emerge. When I send 2 packets, I get nothing. When I send the 3.
One the first one emerges and so on. It seems like a buffer issue. Please
help. The workflow is attached.
8.grc
Description: Binary da
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