On 06/08/2016 10:07 AM, Raj Bhattacharjea wrote:
> The same flow graph and the same SDR hardware with the same settings and
> same drivers should produce the same results (if samples are not being
> dropped by the host computer or something else). That said, I've seen
> weird things like this pop
Looks like a missing dependency. Who ships SSLv3_method?
M
On 06/09/2016 04:13 PM, Philip Hahn wrote:
> I'm trying to install gr-baz using Pybombs 2.0.1 There's an error
> compiling apache-thrift. I'm using Kali 2016.1 in a virtual machine. Any
> ideas? Thanks, -philip
>
> hahnpv@kali:/usr$
Excuse me for not understanding everything, but there seem to be a lack of
comprehension coming from me.
1- Where is your "625 kHz" coming from ?
2- The links I provided are only the reference where I took the information
for trying to build things up. I didn't include the link where it
Hi Marcus,
Thanks for the suggestion. While still using the Python block, I tried
changing the sources to CONST_WAVE and decreasing the sample rate to 500K,
and proceeded to do that all the way down to 1, and it still was producing
Us on the output.
Having said that, I turned to implementing the
Hi Olivier!
On 10.06.2016 00:05, Olivier Goyette wrote:
>
> You are wrong !
>
That being the case very often, I think the error's on your side, this
time :)
So, I will need you to *explain* how you can transport 1.somethingMb/s
through a 625kHz wide channel if every time you use that channel to
I'm trying to install gr-baz using Pybombs 2.0.1 There's an error compiling
apache-thrift. I'm using Kali 2016.1 in a virtual machine. Any ideas?
Thanks, -philip
hahnpv@kali:/usr$ pybombs install gr-baz
Install tree:
|
\- gr-baz
|
+- armadillo
| |
| +- lapack
| | |
| | +-
You are wrong !
1 sample/symbol is when I run simulation (no transmission over the air).
When I want to transmit over the air ( cable between Tx and Rx ) I need to
use 6 samples/symbol.
This is what I've told earlier, 1 sps is the only way I could send a
message and retrieve it at the end of
Re: 1) Well, if this doesn't work on a stream with sps>1, it's no use
trying it over the air. You just get additional problems!
Also, I kind of doubt you should use the term FSK for something that is
only one sample long – a single sample doesn't have a frequency, right?
Re: 3) wait!
You have a
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My flowgraph is based on what I've read throughout the different forums on
the internet because :
1- I'm a newbie to GRC and GNUradio in general
2- It's my first time trying to develop a telecomm application
3- I'm using a RRC filter because it's a requirement stated in the
documentation I have
Why are you using the RRC filters?
I hope you are realizing that filtering a CPFSK signal is not the same as
filtering its instantaneous frequency (which is a PAM signal with
rectangular pulses).
As a result, the next question is why in your poly-phase filter you are
using RRC filter taps?
Hi Pavan,
1)
if you really just need one tone, try a sampling rate like 500kS/s, and
transmit a constant. Use the offset tuning capabilities to put the tone
away from the LO leakage, to avoid cancellation.
2)
Yes. C++ blocks tend to be much much faster. The fact that you're seeing
underruns proves
Hi Pavan,
I already answered on the list. But here goes my text again:
> Hi Pavan,
> 1)
> if you really just need one tone, try a sampling rate like 500kS/s,
> and transmit a constant. Use the offset tuning capabilities to put the
> tone away from the LO leakage, to avoid cancellation.
> 2)
>
Santos,
I could not follow this.
Here's what I think you want:
- USRP Source => Other Blocks
- Your GPIO Block is on the side
In C++, pass a reference of the USRP source into your block. There, use
get_device() to return a multi_usrp::sptr. With that, you can do
whatever you want.
M
On
Hi Devin,
On 09.06.2016 15:27, devin kelly wrote:
> A different approach makes sense. What I need this for is doing some
> book keeping when certain frame/slots occur.
This sounds a lot like you should be doing this based on when a certain
sample flies by – and not at a certain "CPU time".
>
Hi Olivier,
trying to catch up with you here. I've got a few questions! Please
excuse if they've been answered by you before; it's not really easy to
navigate your emails – hint: it gets easier for us to help you if you
use the "reply" button in your email client, so that things get clearly
This might be broken in the master branch.
If you select several blocks and right click, there is a 'Create Hier'
action under 'More' that will create a new flowgraph for you.
-- Seth
On 06/09/2016 10:47 AM, Marcus Müller wrote:
Hi Andrej, hey Jon,
well, technically, your hier_block2 can
Hi Andrej, hey Jon,
well, technically, your hier_block2 can also have a io_signature with a
variable number of in- and outputs. Haven't tested that in a while (in
fact, never with the current scheduler), but in both python and GNU
Radio, you'd set the io_signature of your hier_block in the
Something else I observed :
https://www.dropbox.com/s/ztlyujesvjlwexy/Receiver2.png?dl=0 . The data
seems to be mixed with the carrier, am I right ? We see like an AM
modulation in the upper graph. Is there a way to eliminate the carrier's
presence ?
Thanks
Olivier
I think I might have something at my receiver, but I'm not sure how to deal
with it. If you take a look at this picture :
https://www.dropbox.com/s/sp1hrhl8qgj2xct/Receiver.png?dl=0 , we clearly
see 2 spikes centered at + 312.5kHz and - 312.5kHz. That's what I should
have. The upper graph is the
I am also noticing that the unit test runs twice. Is there a particular
reason for that? Also, if I call self.assertTrue() on something I know is
false ('1 == 2' for example) before self.tb.stop() is called, the test just
hangs. If I call self.tb.stop() and then call the same assert statement,
Hey John,
you could create a hier-block and parametrize it as needed and then drop it 16+
times in your flowgraph. Or you could create a hier block with a variable
number of inputs and outputs, but I'm not sure if that's possible.
Best Regards,
Andrej
On June 9, 2016 2:43:27 PM GMT+02:00,
A different approach makes sense. What I need this for is doing some book
keeping when certain frame/slots occur. Since I have a TDMA system, I need
to make sure the metadata (e.g. tx_time tag) I apply to my packets is in
sync with the radio time. Additionally, the receive time is important to
I'm working on a flowgraph that has a lot of blocks (sets of identical blocks
for 16+ channels).
What's the best way to manage this on-screen in GRC? Can GRC handle multiple
sheets, or is there a way to group a bunch of blocks into a "superblock" that
shows in the flowgraph as a single block?
Hi list,
can anyone help me with this? I'm trying to build an own QT GUI, which
opens in an own window so far. I want to include my GUI in existing QT
windows (like all the gr-qtgui blocks do) so that there is only one window
with all the QT content in it.
So far I have configured the call in
On 08. 06. 2016 14:59, Olivier Goyette wrote:
> 1st concern : when I enable the rational resampler with
> Interpolation set to : baud_rate and Decimation set to : sample_rate,
> GRC seems to not execute the flowgraph at all as if the calculations
> were too big ?! Since *sample_rate* / *baud_rate*
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