You can use tags, tx_time, tx_sob and tx_eob, for implementing TDMA based
system. For this to work you should have a common time source for both
transmitters like a GPSDO or MIMO cable if they are colocated.
--
Usman
On Wed, Jun 14, 2017 at 10:38 AM, Ammar Mahmood
wrote:
> Hi,
>
> I am using a
Hi,
I am using an experimental setup using two transmitters and one receiver. I
want only one transmitter to transmit at a given time so as to avoid
collisions. For this purpose, I want to create a TDMA based multiple access
channel. How can I achieve this task?
Best,
Ammar
__
On 06/13/2017 12:41 PM, Mojtaba Mansour Abadi wrote:
> Hi Everyone,
>
>
>
> I am trying to connect two PCs using B210 USRPs and tunnelling method.
>
>
>
> After going through examples and documents I came ups with the attached
> flowgraph.
>
>
>
> I run the flowgraph on both machines an
Hello,
The second week of my GSoC project was focused on the implementation of the
SigMF JSON C++ API writing functionality. Currently, I'm working on the sink
block of the gr-sigmf.
Please take a look at my blog[1] and the gr-sigmf repo[2].
Thanks!
Links:
--
[1] http://ixion.csd.uoc.gr/
In the two-USRPs scenario, one of the USRPs is transmitting, and one is
receiving?
Are they "through the air" or over a cable. If over a cable, how much
attenuation has been added to the cable.
On 2017-06-13 11:16, Manolis Surligas wrote:
> Ok lets explain a little bit more what actually you
Just a quick reminder that I'll be at HacDC tomorrow night at 7:30pm.
Tom
On Sun, Jun 4, 2017 at 11:51 AM, Tom Rondeau wrote:
> I'll be speaking about the DARPA Bay Area Hackfest in two venues around
> the DC area over the next couple of weeks. I'll be at Nova Labs in Reston
> on Tuesday the 6
Hello Everyone,
Does anyone know about gr-scan gain control options if available?
Thanks,
--
View this message in context:
http://gnuradio.4.n7.nabble.com/gr-scan-gain-options-tp64242.html
Sent from the GnuRadio mailing list archive at Nabble.com.
__
We have a satellite modem used for an uplink that we want to have a
GNUradio receiver built. We will pay $1500 USD for the working receiver.
The modem is a Comtech CDM-570L. For more information, please see:
Datasheet:
http://www.comtechefdata.com/files/datasheets/legacy/ds-cdm570-L.pdf
Manual:
Ok lets explain a little bit more what actually you observe. Each burst
is a training sequence that has a duration of 64 samples and then 1000
zero samples. This is generated using a vector source block repeatedly.
As you can see in the ok.jpeg all sequences are exactly the same. In the
other p
I'm having a hard time seeing a significant functional difference
between the two. Could you perhaps explain?
Also, maybe a diagram showing the two configurations?
Do you get any error messages during a run?
Are you doing reception on the two USRPs within a single flow-graph, or
two separate
Hello Everyone,
Does anyone know about gr-scan gain control options if available?
Thanks,
--
View this message in context:
http://gnuradio.4.n7.nabble.com/usrp-spectrum-sense-py-tp63994p64239.html
Sent from the GnuRadio mailing list archive at Nabble.com.
Thanks, George.
Two things:
Could you try updating to the most recent UHD version?
It would be helpful if you provided your .dat files in the form of plots
or graphs, highlighting the areas you consider "distortion". This will
help us help you.
On 2017-06-13 07:23, George Vardakis wrote:
Hey Sinta,
I have actually just Implemented a Spectrum Sweep using USRP and GNU Radio.
One possible, though very ugly approach can be implemented using a Probe Signal
and Function Probe. The idea being, that you have a Signal Source generating a
Saw-Tooth Signal which gets fed into the Probe
Good evening,
I attach three captures to show you the problem, one with the reference
signal i transmit, one with the received samples when using the same device
for TX and RX and one with the received samples of the one device, when the
second one transmits. I also attach the flowgraph i used for
Hey Julian,
Did you mean message strobe block? I've try it and the result is my center
frequency from variabel "freq" replaced by new center frequency as massage
strobe set but not automatically.
I also tried usrp_spectrum_sense.py and its absolutely works. Now i
confused how to adapt the python s
Hey Sinta,
> Should i edit the python that grc generate?
Exactly!
You can find the example Sumit mentioned under
gnuradio/gr-uhd/examples/python/.
Either use this directly or copy over the required functionality to your
flowgraph.
However, it should be mentioned that this functionality could also
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