Hi All,
I am currently trying to compare any difference between the QT Time Sink and
the QT Vector Sink code. I have a GRC Flowgraph which uses both of these plots.
The QT Time Sink works every time, but if I connect a QT Vector Sink at the
same point it fails to display data other than zero, a
On 02/24/2016 12:24 AM, Justyn wrote:
Forgive me because I'm a software engineer with little theoretical
comms experience, but I'm having a difficult time understanding what a
180 phase shift at RF would mean for my baseband signal. If anything.
A phase shift at RF comes out as a phase-shift at
That was pretty much what I wanted to say.
"State of the art in SDR" is very *very* ambiguous; it could refer to
* SDR as a tool to make transceiver or measurement systems, and in that
both the fact that existing non-SDR systems are now SDR, or that new
systems are possible with SDR,
* SDR hardwar
My suspicion is exactly that, network manager just "manages something",
which conflicts with your settings in /etc/network/interfaces. Can you,
via the "connection settings" menu, configure your card to the same
static address, ...10.1?
Best regards,
Marcus
On 02/23/2016 10:27 PM, Maria Christopo
Hm, you just want to get started with cheap, "low-end" receivers: I'd
really go for the rtl-sdr dongles. They can really be small, just
sticking out of your USB port for about 5mm. I'm not aware of a similar
device for the expresscard slot; if you want, build one yourself, by
getting an old/cheap/b
Hello,
Yes, that was the issue.
The network manager kept a previous IP address and ignored the ifconfig
command.
It works now.
Thank you,
Maria
2016-02-24 16:25 GMT+02:00 Marcus Müller :
> My suspicion is exactly that, network manager just "manages something",
> which conflicts with your settin
On Tue, Feb 23, 2016 at 9:53 AM, wrote:
> The videos of the FOSDEM talks are now available at
> https://video.fosdem.org/2016/aw1125/
>
> Status:
> OK: 'Building Self-Optimizing Radios using DEAP'
> OK: 'Embedded SDR'
> OK: 'News from the OAI Community'
> OK: 'Prototyping the 5G Air Interface in
As little comms knowledge as I have, I have even less about MIMO.
However, I'm having a hard time understanding how the WBX boards would
even be considered for any MIMO application when there could be a random
180 degree phase offset. Is there another daughtercard in which this
little quirk is
on the N210: SBX.
UBX on the N210 does have that ambiguity (it doesn't on X3x0).
re MIMO: well, ambiguities aren't nice, but as a matter of fact, any
communication receiver needs to have a timing / phase recovery, be it a
MIMO receiver or not; typically, you'd try both options (remember, 180°
is j
Hi,
>> Status:
>> OK: 'Building Self-Optimizing Radios using DEAP'
>> OK: 'Embedded SDR'
>> OK: 'News from the OAI Community'
>> OK: 'Prototyping the 5G Air Interface in GNU Radio: An FBMC Primer'
>> OK: 'Radio Machine Learning with FOSS'
>> OK: 'RFNoC -- Evolving SDR toolkits to the FPGA platform
You're right: this isn't a show stopper, and in the context of this not
running in real time for my purposes anyway, I don't think it's a big deal.
In the interest of completeness, when is this ambiguity introduced? On
power up, or on some/any UHD call? Basically, when should I be aware
and c
Hello all,
After sorting out my power issues with the B200mini (it required a dual USB
to 3.0 mini cable, due to browning out the single USB 3.0 connection), I'm
now trying to connect my B200mini to a Raspberry Pi 2.
I was excited when I found that Raspbian has a gnuradio and gnuradio-dev
package
Just to make sure we're all on the same page: The vector sink is meant
to display vectors of data, one at a time. It's basically like the
frequency sink if you had to vectorize and FFT the data yourself.
So putting a time signal into the vector sink is maybe not the right
thing to do, but I'm not
Hi Martin,
In my application I am generating a vector of amplitude values (of length 128)
obtained at different frequencies. My flowgraph contains an OOT Block which is
stepping the SDR and saving an amplitude value for each frequency, generating
an output sample for each frequency at a time. I
Hi Michael,
To get GNUradio to build correctly from source on the RPi2 you need to do a
couple of things:
1. Increase the swap space on the device
2. Build single threaded (make -j 1)
3. Make a source fix in one of the volk ARM asm files. Did you run into this
error when you tried your build ?
Suppose i have a file source, connected to 2 blocks, one, lets call it
Block A, does always return instantly after general work is called, in
other words, it will never consume an input item. The other one, say its
block B, is the identity block, it consumes and output exactly what it
receives as i
On 02/24/2016 02:57 PM, Nigel Steed wrote:
> In my application I am generating a vector of amplitude values (of
> length 128) obtained at different frequencies. My flowgraph contains
> an OOT Block which is stepping the SDR and saving an amplitude value
> for each frequency, generating an output sa
Here is my problem, its been asked a lot on the Internet but I can't seem
to get a solution/answer.
Traceback (most recent call last):
File "/home/branislav/Documents/GnuRadio GRC/chirpGui.py", line 378, in
tb = chirpGui()
File "/home/branislav/Documents/GnuRadio GRC/chirpGui.py", line 10
On 02/24/2016 09:35 PM, Charles Bridger wrote:
Here is my problem, its been asked a lot on the Internet but I can't
seem to get a solution/answer.
Traceback (most recent call last):
File "/home/branislav/Documents/GnuRadio GRC/chirpGui.py", line 378,
in
tb = chirpGui()
File "/home/br
Thanks for the reply,
Could you please clarify what you mean by 'you're offsetting the frequency
and shouldn't be'?
I am tuning the frequency of the USRP, but other than that I am not sure
what you mean. The channelizer flow graphs in the link set the Ch0: Center
Freq field as well.
Thanks,
Tom
On
Hello everyone,
I'd like to measure FM frequency deviation and modulation index of an FM
radio broadcast radio station. Unfortunately I can't use the bessel null
method as I can't influence the modulation of the transmitter.
I've tried a patched version of rtl_fm [0] with an rtl-sdr dongle to
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