Hi Marcus,
Thank you very much!
Regards,
George
On Sat, Mar 25, 2023, 4:05 PM Marcus D. Leech
wrote:
> On 25/03/2023 15:45, George Edwards wrote:
> > Hello GNURadio Community,
> >
> > I am about to use a N310 radio to transmit and receive data. My
> > problem is I d
Hello GNURadio Community,
I am about to use a N310 radio to transmit and receive data. My problem is
I do not know how to interpret the sample rate parameter. I will pose some
questions that I am seeking answer to (I read there are 3 Master Clocks for
the N310):
Q1. The transmitter Sample Rate
gt;
> John
>
> On Wed, Mar 15, 2023 at 12:37 PM Jeff Long wrote:
>
>> The function is there. Perhaps you're not calling it correctly, but I
>> can't tell.
>>
>> On Wed, Mar 15, 2023 at 11:11 AM George Edwards
>> wrote:
>>
>>> Hi Jeff,
Dear GNURadio Community,
I have a decimator OOT block doing my signal processing. It works well, but
after 30 or epochs, it schedule an output of one sample which breaks my
signal processing algorithm. Then the output gets scheduled to a good
number and the algorithm starts working good again
Hello GNURadio Community,
I have a strange problem whereby the block (it feeds a chain of blocks) I
am feeding complex data to does not see the data, however, I can view the
data on a Constellation GUI as well as dump it to a file for viewing, so I
know data is being fed to the chain of blocks.
;work"
> method instead of being a hier block, they're definitely not generated
> from a GRC flow graph.
>
> So, I'm afraid you'll just have to sit down and recreate the "connect"
> calls in your
> python in GRC; the rest will kind of arise from that.
>
>
Dear GNURadio Community,
I am using Ron's Github dvbs2 project that streams data from Tx to Rx to
view the Star Wars clip. I am streaming qpsk data and his grc works fine. I
built 3 blocks that do RRC pulse shaping, timing and frame recovery. I
inserted my blocks between the transmitter and
Hello GNURadio Community,
We are looking for a way to reverse engineer some Gnuradio Python blocks
that were created by folks no longer with our company to the corresponding
GRC files. Is anyone familiar with a tool that can do this for us?
Thank you!
Regards,
George
conda environment can be found here:
>
>
> https://wiki.gnuradio.org/index.php/CondaInstall#Building_OOT_modules_to_use_with_conda-installed_GNU_Radio
>
> Cheers,
> Ryan
>
> On 2/6/23 11:07 AM, George Edwards wrote:
> > Dear GNURadio Community,
> >
> > I plan to
Dear GNURadio Community,
I plan to buy a PC with Windows 11. I looked online to see if folks were
installing Gnuradio on Windows 11 and found nothing definitive. Please
advise me if Gnuradio works on Windows 11.
I also noticed online that there was an installation package for Windows
Debugging,
Hi Marcus,
I understand where you are coming from. Thank you!
Regards,
George
On Fri, Feb 3, 2023 at 12:23 PM Marcus D. Leech
wrote:
> On 03/02/2023 12:44, George Edwards wrote:
>
> Hi Marcus,
>
> I do not have any hardware. I am doing everything in simulation. I
>
Thank you all for your wonderful ideas!
Regards,
George
On Fri, Feb 3, 2023, 10:22 AM Marcus D. Leech
wrote:
> On 03/02/2023 12:07, George Edwards wrote:
>
> Thank you Marcus, thank you everyone!
>
> A more fundamental question I have is: Let's assume I was working at a low
>
:38 AM Marcus D. Leech
wrote:
> On 03/02/2023 11:30, George Edwards wrote:
>
> Hi Fabian,
> Thanks for your suggestion!
>
> However, it will not help me because I would like to see the spectrum
> displayed over the proper range 1GHz +/- 4MHz.
>
> George
>
> I t
gt; quite a mouthful - it requires a filter transition width of
> significantly less than 1/375 of the input Nyquist rate. So, it would
> seem advisable to do this decimation in a cascade of decimators – in the
> extreme case, decimation by 3, by 5, by 5, by 5.
>
> Best regards,
&
quency sink and also set you
> oscillator frequency as offset frequency in the sink's settings.
>
> Best,
> Fabian
>
> Am 03.02.23 um 16:52 schrieb George Edwards:
> > Dear GNURadio Community,
> >
> > Let's say I build a GRC flowgraph operating at a sample rate
Dear GNURadio Community,
Let's say I build a GRC flowgraph operating at a sample rate of 3 GHz and
wish to display the spectrum over the fixed range of 1GHz +/- 4MHz, how do
I get the QT GUI Frequency sink to plot over this range?
Thank you!
George
Thanks for the heads up Marcus!
George
On Wed, Feb 1, 2023, 11:07 AM Marcus D. Leech
wrote:
> On 01/02/2023 13:03, George Edwards wrote:
> > Porting an older version of some code that used an earlier version of
> > gnuradio libs, and am rebuilding with gnuradio 3.10. Old co
Porting an older version of some code that used an earlier version of
gnuradio libs, and am rebuilding with gnuradio 3.10. Old code referred to
an import of blks2 from grc_gnuradio which then fails with No module named
grc_radio. Is there a replacement for that module?
Thank you very much! George
On Wed, Oct 26, 2022, 9:51 AM Marcus Müller wrote:
> Haha! Perfect :) Glad you solved the issue! And absolutely no reason to be
> sorry!
>
> On 26.10.22 17:04, George Edwards wrote:
> > Hi Marcus,
> > I have egg on my face! I messed up
.
>
> So please tell us how exactly you notice / observe this change in input
> vector length!
>
> Best regards,
> Marcus
>
> On 26.10.22 03:24, George Edwards wrote:
> > Hello GNURadio Community,
> >
> > I designed an OOT block to accept vectors of size 4
otice / observe this change in input
> vector length!
>
> Best regards,
> Marcus
>
> On 26.10.22 03:24, George Edwards wrote:
> > Hello GNURadio Community,
> >
> > I designed an OOT block to accept vectors of size 448 samples. In the
> flowgraph, my block
> &
Hello GNURadio Community,
I designed an OOT block to accept vectors of size 448 samples. In the
flowgraph, my block is preceded a Stream-to-Vector block with the vector
size set to 448 samples. My OOT block expects vector data that are of
length 448 or multiple of 448 samples for signal
, 2:58 PM Jeff Long wrote:
> The last one looks correct, and would not have given the error you mention
> above. What happened?
>
> On Wed, Oct 12, 2022 at 4:49 PM George Edwards
> wrote:
>
>> Hi Jeff, thank you very much for the response.
>> I tries:
>> nin
ion should return a list, containing the
> number of items required for each input.
>
> On Wed, Oct 12, 2022 at 8:08 AM George Edwards
> wrote:
>
>> Hello GNURadio Community,
>>
>> I am getting a TypeError when I fill in the code in the forecast() method
>> in
Hello GNURadio Community,
I am getting a TypeError when I fill in the code in the forecast() method
in my Gnuradio OOT block design. I know, if I want to interpolate or
decimate, I can simply pick the block type in the gr_modtool design menu,
however, I would like to develop the capability to
Dear GNURadio Community!
I am sending an dvbs2 video file on an N310 radio in loopback from TX to RX
using QPSK modulation (using Ron's dvbs2 Github project). I keep getting
"Baseband header crc failed" no matter what I try. I attached a
Constellation Sink to the output of the UHD: USRP Source to
Hello GNURadio Community,
I installed Ubuntu 22.04 on my computer and then tried to installing
Gnuradio 3.9 using PPA installation where I explicitly request for
gnuradio-releases-3.9. The Gnuradio version installed is 3.10.1.1. Why am I
not getting a Gnuradio version 3.9? Am I missing something?
this on the Windows PC?
Thank you!
George
George
On Mon, Aug 15, 2022 at 5:08 AM Marcus Müller wrote:
> Hi George,
>
> On 8/3/22 19:23, George Edwards wrote:
> > Hi Marcus, thanks for the response, very much appreciated!
> > I have a Windows PC and I believe that in order to build OOT
/22 03:04, Marcus Müller wrote:
> > Hi George,
> >
> > On 8/3/22 19:23, George Edwards wrote:
> >> Hi Marcus, thanks for the response, very much appreciated!
> >> I have a Windows PC and I believe that in order to build OOT blocks,
> >> one needs a Linux environm
have to update the firmware.
>
> Post the entire results from
>
>apt list --installed | grep hackrf
>
> so we can see the versions. There should be 2 entries.
>
> Note the date of the firmware - 2014 - was first year the hackrf was
> released via Kickstart.
>
> -
Hello GNURadio Community,
I designed an FM receiver in Gnuradio-Companion to receive an FM broadcast
signal from the Hackrf One. I am running Gnuradio-Companion 3.9 on Ubuntu
20.04 inside VirtualBox 6.1. I installed the Hackrf software on Ubuntu and
set VirtualBox USB port to see the Scott Gadget
orks on ubuntu but
> Ideally you'd like the version of firmware to match the software.
>
> -- Cinaed
>
>
> On 8/3/22 18:28, George Edwards wrote:
>
> Hello Gentlemen,
>
> I installed VirtualBox extension pack and made the USB connection in
> VirtualBox to the Hacker
limit the sample rate you can achieve since
> there is some overhead passing through the USB connection. Consider
> installing Linux directly on your machine.
>
> On Aug 3, 2022, at 6:12 AM, George Edwards wrote:
>
>
> Hello GNURadio Community,
>
> I built a grc flowgrap
that's prohibitively slow, as
> well. Also, why do
> VirtualBox (and that's not a Microsoft product, so I'm really confused by
> what you're
> referring to), if you can have WSL2?
>
> Best regards,
> Marcus
>
> On 03.08.22 14:15, George Edwards wrote:
> > Hel
t you must not put "payload" data into strings that you put into
> PMT.
> `pmt.to_pmt(str)` generates a PMT symbol, and these are saved for evermore
> in a global table.
>
> Best regards,
> Marcus
>
> On 03.08.22 13:19, George Edwards wrote:
> > Hello GNURadio
Hello GNURadio Community,
I built a grc flowgraph in Gnuradio 3.9.5 on Ubuntu 20.04 inside Microsoft
VirtualBox. I have a HackRF One radio hardware. I installed the hackrf
drivers in Ubuntu with command: sudo apt-get install -y hackrf
and confirmed the installation. I connected the HackRF One
Hello GNURadio Community,
Let's assume the following pmt definitions for a list and and dictionary in
an OOT block:
P_list = pmt.to_pmt([1, 2, 3.45, 'eggs'])
P_dict = pmt.to_pmt({'spam': 20, 'eggs': 40})
How do I explicitly extract the first element in P_list and the value for
'spam' from
ict_ref is what gets returned if the key is not
> found.
>
> On Fri, Jul 29, 2022 at 11:13 AM George Edwards
> wrote:
>
>> Hello GNURadio Community,
>>
>> I am creating a Python OOT block to send/receive pmt list and pmt
>> dictionary messages. In both
.dict_ref(d, k, nil)
>
> The last argument to dict_ref is what gets returned if the key is not
> found.
>
> On Fri, Jul 29, 2022 at 11:13 AM George Edwards
> wrote:
>
>> Hello GNURadio Community,
>>
>> I am creating a Python OOT block to send/receive pmt list
Hello GNURadio Community,
I am creating a Python OOT block to send/receive pmt list and pmt
dictionary messages.
In both cases, I am having problems extracting the elements in the message.
Let's assume (some trivial values):
P_list = pmt.to_pmt([1, 2, 3.45, 'eggs'])
P_dict = pmt.to_pmt({'spam':
ws Subsystem
> for Linux but that is improving over time.
>
> Regards,
> Derek
>
> On 7/28/2022 8:06 PM, George Edwards wrote:
>
> Hi Marcus, do you know if a Docker Container on Mac talk to either the
> X310 or N310 radio? George
>
> On Thu, Jul 28, 2022, 11:32 AM Marcu
pass-through-a-usb-device-to-a-container
>
> So, this is sadly impossible.
>
> Best regards,
> Marcus
>
> On 7/28/22 17:03, George Edwards wrote:
> > Hello GNURadio Community!
> >
> > I am working with Gnuradio 3.9 on a Mac. Gnuradio runs inside a Docker
> &g
ssible.
>
> Best regards,
> Marcus
>
> On 7/28/22 17:03, George Edwards wrote:
> > Hello GNURadio Community!
> >
> > I am working with Gnuradio 3.9 on a Mac. Gnuradio runs inside a Docker
> > Container. I build a Gnuradio flow graph with a soapy HackRF source
>
Hello GNURadio Community!
I am working with Gnuradio 3.9 on a Mac. Gnuradio runs inside a Docker
Container. I build a Gnuradio flow graph with a soapy HackRF source block
to interface with the HackRF hardware. When I run the flow graph, it says
there is no matching HackRF.
Will appreciate any
Hello GNURadio Community,
No need to respond to my posting, I figured it out.
Thank you!
George
On Wed, Jul 20, 2022 at 1:01 PM George Edwards
wrote:
> Hello GNURadio Community,
>
> I wrote a Python OOT block that takes a vector input and outputs a vector
> of the same size.
&g
Hello GNURadio Community,
I wrote a Python OOT block that takes a vector input and outputs a vector
of the same size.
In the grc, my OOT block is preceeded by a stream to vector and followed by
a vector to stream (I specify the vector number items in both blocks as
well as the yml for my Python
Hello GNURadio Community,
Several Gnuradio tutorials show Variable Blocks that compute filter
coefficients which are passed as input parameters to dsp signal processing
blocks. In the past, I designed a GRC flow graph with a Variable Block that
computes filter coefficients that were passed as an
t template arguments lead to
> different classes and thus, a function that accepts a `std::vector` will
> not accept a `volk::vector` and vice versa.
>
> Cheers
> Johannes
>
> On 03.05.22 16:01, George Edwards wrote:
> > Hi Johannes,
> >
> > Thank you very much! T
ignment.
> `volk::vector` is available in `volk/volk_alloc.hh`. Since it is a C++
> only feature.
>
> Cheers
> Johannes
>
> On 03.05.22 04:28, George Edwards wrote:
> > Hello GNURadio Community,
> >
> > I am having a problem using the above function with vector p
Hi Brian,
Thank you very much!
For my example, I will the following change:
volk_32fc_s32fc_multiply_32fc(my_val.data(), my_val.data(), scale, 240);
Thank you very much!
George
On Mon, May 2, 2022 at 10:51 PM Brian Padalino wrote:
> On Mon, May 2, 2022 at 11:26 PM George Edwards
>
Hello GNURadio Community,
I am having a problem using the above function with vector parameters. If I
use an array say:
gr_complex my_val[240];
volk_32fc_s32fc_multiply_32fc(my_val, my_val, scale, 240);
It works! But if I change my_val to be a vector like below, it fails:
std::vector
(implying input). In a sync block, they are the
> same though, unless you overwritten forecast().
>
> On Thu, Apr 21, 2022 at 12:14 PM George Edwards
> wrote:
>
>> Hi Jeff,
>>
>> Thanks for your reply!
>>
>> So let me make certain that I understand
nature of your
> block is.
>
> On 20.04.22 17:22, George Edwards wrote:
> > Hello GNURadio Community,
> >
> > In an OOT QA testing of a signal processing block designed to accept an
> input vector of 4
> > elements, I am having problems passing the QA input as a vect
t;
> On Wed, Apr 20, 2022 at 1:44 PM George Edwards
> wrote:
>
>> Hello GNURadio Community,
>>
>> I have written a C++ OOT "sync" block with vector input and vector output
>> (data type float). I wrote a line in my program to print the value of
>>
Hello GNURadio Community,
I have written a C++ OOT "sync" block with vector input and vector output
(data type float). I wrote a line in my program to print the value of
noutput_items on each GRC flow graph iteration and it alternately prints
the values 15 and 16. This is surprising!!! I was
Hello GNURadio Community,
In an OOT QA testing of a signal processing block designed to accept an
input vector of 4 elements, I am having problems passing the QA input as a
vector. It sees the input as a stream. I tried passing the data in two
ways, but each failed. Here are the two ways I have
Hello GNURadio Community,
Please ignore the above problem, I figured it out.
George
On Sun, Apr 17, 2022 at 5:16 PM George Edwards
wrote:
> Dear Gnuradio Community,
>
> I am writing an OOT signal processing algorithm in C++ that requires both
> fft and ifft. I use the Gnuradio
Dear Gnuradio Community,
I am writing an OOT signal processing algorithm in C++ that requires both
fft and ifft. I use the Gnuradio C++ library to get the fft and ifft
functions. To confirm understanding of setting up these functions, I wrote
C++ OOT blocks for both fft and ifft blocks. I ran a
Hi Jeff and Vasil,
Thank you very much!
George
On Wed, Apr 13, 2022 at 7:21 PM Jeff Long wrote:
> The C++ API gives you ninput_items explicitly, so ninput_items[0] is the
> number of items in input_items[0].
>
> On Wed, Apr 13, 2022 at 7:18 PM George Edwards
> wrote:
>
Hello GNURadio Community,
I am writing a Gnuradio C++ OOT block and need to get the number of complex
input data samples fed into my block by the scheduler on each iteration of
data delivery. I need to know this information because the relationship
between my input and output stream is not as
Hi Marcus,
Thank you!
I will look into the link you sent!
George
On Wed, Mar 16, 2022 at 11:26 AM Marcus D. Leech
wrote:
> On 2022-03-16 11:17, George Edwards wrote:
>
> Hello GNURadio Community,
>
> I have used the firdes.low_pass_2(...) function in many of my Gnuradio
>
Hello GNURadio Community,
I have used the firdes.low_pass_2(...) function in many of my Gnuradio
blocks in the past to pass filter coefficients to my blocks and it has
always worked.
Yesterday I opened one of my GRC that uses his filter function and it
showed an error. The specific usage was:
gt; is the corresponding yml file of Chunks to Symbols, Based on that, you
> could use the following in the yml file:
>
> dtype: float_vector
>
>
> I hope that this helps.
>
> Regards,
> Mubashira Zaman
>
>
>
>
>
>
>
>
>
>
>
> On Tuesday
Hello GNURadio Community,
I am making a Gnuradio C++ OOT block using the gr_modtool. At the start of
a design gr_modtool provides a template for the user to fill out. One of
the items to fill out is parameters used. I have a parameter (let's call if
coeffs) that is not a single floating point
/>:https://liquidsdr.org/ especially here:
> https://liquidsdr.org/doc/firdes/
> Does that help?
> BR,
>
> Marcin
>
>
> pon., 28 lut 2022 o 22:27 George Edwards
> napisał(a):
>
>> Hello GNURadio Community,
>>
>> I would like a Gnuradio C++ equivalent
Hello GNURadio Community,
I would like a Gnuradio C++ equivalent to SciPy's firls LP filter to find
the filter coefficients for a C++ OOT block I am designing. Also, if there
is a way to incorporate the SciPy firls filter package in a Gnuradio C++
OOT, I am open to that.
Thank you!
Regards,
0.0272494
> tap 7: 1.54168e-17
> tap 8: 0.0582835
> tap 9: -0.0539706
> tap 10: -0.0877955
> tap 11: 0.298026
> tap 12: 0.600081
> tap 13: 0.298026
> tap 14: -0.0877955
> tap 15: -0.0539706
> tap 16: 0.0582835
> tap 17: 1.54168e-17
> tap 18: -0.0272494
> tap 1
I can see those two arguments are optional (window type and
> beta). Try to run your code without them and check if it works.
>
>
> wt., 22 lut 2022 o 19:25 George Edwards
> napisał(a):
>
>> Hello Vasil and Marcin,
>>
>> Thanks very much for your help.
>>
help.
George
On Tue, Feb 22, 2022 at 6:15 AM Vasil Velichkov
wrote:
> Hi George,
>
> On 21/02/2022 18.31, George Edwards wrote:
> > lpfilter = gr::filter::firdes::low_pass(gain, sampling_freq,
> cutoff_freq, transition_bandwidth,
> > fft::window::win_type <
> https:
ut:
> https://www.gnuradio.org/doc/doxygen/firdes_8h_source.html
> https://www.gnuradio.org/doc/doxygen/pm__remez_8h.html
> BR,
> Marcin
>
> pon., 14 lut 2022 o 00:07 George Edwards
> napisał(a):
>
>> Hello GNURadio Community,
>>
>> I am designing a Gnuradio OOT block
> pon., 14 lut 2022 o 00:07 George Edwards
> napisał(a):
>
>> Hello GNURadio Community,
>>
>> I am designing a Gnuradio OOT block in C++. Are there firls and kaiser
>> filter methods (analogous to the scipy package methods that one would use
>> in Python OO
Hello GNURadio Community,
I am designing a Gnuradio OOT block in C++. Are there firls and kaiser
filter methods (analogous to the scipy package methods that one would use
in Python OOT) that I can call to generate coefficients.
Thank you!
Regards,
George
>
> You can use:
>
> memcpy(dst, in, sizeof(gr_complex) * ofdm_fft_size);
>
> Ron
> On 12/23/21 10:42 AM, George Edwards wrote:
>
> Hi Ron,
>
> Sorry for bothering some more!
> In Debugging it appears that dst is not pointing to the input data (
> inpu
le for
> details.
>
> https://github.com/gnuradio/gnuradio/blob/master/gr-fft/lib/fft_v_fftw.cc
>
> Ron
> On 12/14/21 7:53 PM, George Edwards wrote:
>
> Dear GNURadio Community:
>
> I am writing a C++ OOT block where the signal processing requires
> the computation
Thanks Ron! I really appreciate your help!
George
On Wed, Dec 22, 2021, 9:52 PM Ron Economos wrote:
> Comments in-line.
>
> Ron
> On 12/22/21 1:30 PM, George Edwards wrote:
>
> Hi Ron,
>
> Today, I tried to create an OOT block to compute FFT based on your good
> in
my_fft_cc.impl.cc
with a #define
vlength 8, unless the fft function forces things to a minimum of 64 samples
I will appreciate any suggestions you can offer here.
Regards,
George
On Thu, Dec 16, 2021 at 8:14 PM Ron Economos wrote:
> Comments in-line.
>
> Ron
> On 12/16/21 12:47 PM, Ge
gt; Ron
> On 12/16/21 7:19 PM, George Edwards wrote:
>
> Hi Ron,
>
> Thank you very much! I understand most of it, except for how to index
> properly into the values returned by the method ofdm_fft.get_outbuf() to
> do a forward FFT per your instruction to do the shift after
()
//starting at address ofdm_fft_size/2
Thank you!
Best Regards,
George
On Thu, Dec 16, 2021 at 8:14 PM Ron Economos wrote:
> Comments in-line.
>
> Ron
> On 12/16/21 12:47 PM, George Edwards wrote:
>
> Hi Ron,
>
> Thanks again for sending the links and annotating the lin
akeLists.txt
>
> https://github.com/drmpeg/gr-paint/blob/master/lib/CMakeLists.txt#L25
>
> If you need a window, you can look at the block implementation file for
> details.
>
> https://github.com/gnuradio/gnuradio/blob/master/gr-fft/lib/fft_v_fftw.cc
>
> Ron
&
/drmpeg/gr-paint/blob/master/CMakeLists.txt#L78
>
> And link with it in lib/CMakeLists.txt
>
> https://github.com/drmpeg/gr-paint/blob/master/lib/CMakeLists.txt#L25
>
> If you need a window, you can look at the block implementation file for
> details.
>
> https://github.com/gnura
Dear GNURadio Community:
I am writing a C++ OOT block where the signal processing requires
the computation of both fft and ifft. Is there any Gnuradio C++ functions
for the fft and ifft? If not, is there any way to wrap in Python's
libraries with these methods into C++ OOT?
Thank you!
Regards,
Hi Vasil,
I used gr_modtool to remove the entire block and build it back from scratch
and now it works beautifully.
Thanks for your offer to help.
I appreciate the Gnu Radio Community for willingness to offer support!
Regards,
George
On Wed, Oct 20, 2021 at 3:02 PM George Edwards
wrote
bout the visibility attribute, there is nice bit of an
> explanation in
> https://stackoverflow.com/questions/52719364/how-to-use-the-attribute-visibilitydefault
>
> Hope that made sense
> Cheers
> Boris
>
> On Thu, 21 Oct 2021 at 08:02, George Edwards
> wrote:
>
>> Hi Vasil,
&g
Hi George,
>
> On 19/10/2021 16.55, George Edwards wrote:
> > Below is a description of what I did:
> >
>
> What you did is correct and should be enough.
>
> > When I compiled and run, it failed because it could not see the function
> > my_add.
>
>
Hello GNURadio Community,
With complex algorithms, there are times when one needs to add C files to
an OOT module on top of those created by the gr_modtool to make the coding
more modular and cleaner. I made a try with a trivial C++ adder
function file, but
could not get it to work. Below is a
Hello GNURadio Community,
I am working with Gnuradio 3.9. When I design my OOT module with Python as
the selected language and use the Python QA for testing, it works
wonderfully. Now, if I take the same algorithm, translate it to C++ and in
gr_modtool select C++ as the language for my module
Hello GNURadio Community,
I am building an OOT block that needs to access the sym_map and
const_points in the Constellation Rect Object.
Let's say, I call the Constellation Rect Object qpsk and set the vector
values for sym_map and const_points. Then, in using the gr_modtool to
build the OOT
f._excess_bw, # excess bandwidth (roll-off factor)
> ntaps)
> self.rrc_filter =
> filter.pfb_arb_resampler_ccf(self._samples_per_symbol,
>self.rrc_taps)
>
> On Fri, Aug 6, 2021 at 2:24 PM George Edwards
>
Hello GNURadio Community,
The constellation modulator has an RRC filter and we are allowed to set the
alpha and the number of samples per symbol parameters.
An RRC filter is normally designed to cover a number of symbols to the
right and left from the center of its impulse response. Anyone know
Hello,
Does binary package installation of Gnuradio supports the building OOT
Modules or is it that to have OOT module building capability one must do a
source installation of Gnuradio with the Pybombs on Ubuntu?
Thank you!
Regards,
George
your computed number of input samples and a
> print statement in the general_work method that prints the length of the
> input_items[0] and output_items[0] arrays (before you change any of
> them). With these prints you should be able to follow my description of
> the scheduler and unders
as to have the
perspective on how to use the forecast method.
Thanks!
George
On Mon, Jul 5, 2021 at 2:44 PM George Edwards
wrote:
> Good afternoon GNURadio community!
>
> I am having a problem using the forecast method in my OOT model.
>
> In my model, I have one input port and
Good afternoon GNURadio community!
I am having a problem using the forecast method in my OOT model.
In my model, I have one input port and one output port with streaming data.
My signal processing algorithm converts every M input samples into N output
samples where the ratio of M to N is a
On Sat, Jul 3, 2021 at 5:17 PM Marcus Müller wrote:
> Hey George,
>
> did you maybe forget that `consume` is a member of the class, and not just
> a freestanding
> name? You'd want to use `self.consume`, not just `consume`.
>
> Best regards
> Marcus
>
> On 02.07.
wrote:
> Hey George,
>
> did you maybe forget that `consume` is a member of the class, and not just
> a freestanding
> name? You'd want to use `self.consume`, not just `consume`.
>
> Best regards
> Marcus
>
> On 02.07.21 22:33, George Edwards wrote:
> > Hello,
&g
Hello,
I am working with Gnuradio 3.8.
In response to my recent question, I think I found out why my program ran
away in an infinite loop. It was because I was not consuming the inputs. So
at the end of the loop in the general_work method when I used all the
incoming data, I added the following
Happy 4th to everyone!
I am doing a QA test and it goes into an infinite loop and there is nothing
in my code to explain this, except my misunderstanding of writing code for
Gnuradio.
I am working with the general model because I have M input samples to every
N output samples (M and N are not
Hello GNURadio Community:
In my GRC signal flowgraph, I would like to make use of a complex value
computed down stream to multiply upstream input values. Gnuradio has a
"Multiply by Tag Value" block which I think would work wonderfully, if I
knew how to use it.
I am building an OOT downstream
wiki.gnuradio.org/index.php/Guided_Tutorial_PSK_Demodulation
>
>
> Regards,
> On 19/04/2021 00:48, George Edwards wrote:
>
> Hello Gnuradio Community,
>
> I am working with the Gnuradio CCSDS 27 encoder/decoder blocks in Gnuradio
> ver 3.8. To ensure I understand these blocks, I fed a random
Hello Gnuradio Community,
I am working with the Gnuradio CCSDS 27 encoder/decoder blocks in Gnuradio
ver 3.8. To ensure I understand these blocks, I fed a random signal from
0-255 into the encoder with an embedded Python block between the encoder
and decoder which converts the bit values 0 and 1
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