I have no practical experience in this area but you may want to check
out this approach (or similar):
http://www.ettus.com/sdr-software/detail/rf-network-on-chip
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Hi all,
I am trying to make a receiver on gnuradio where one block '*A' *uses
dynamic "threshold" and this threshold is determined by another downstream
block *'B' *and is fed back to *'A'* as a message. I use "msg_connect" to
connect both message port. However there is considerable amount of delay
Hi Chad,
thanks for re-posting your code; it's much clearer to read now.
I'm not quite sure what I'm looking at now: Is this your own
implementation of the yall1 minimization function, or something that can
be tested?
If I remember correctly, the matlab call has a matrix input, and a
"target" vect
Hi Nemanja,
> well Marcus, you were right (like usual) ...
ha! I wish that was true! Usually I'm not right, trust me.
> I tried GRC and it worked. What was strange for me is that flowchart
> was not terminated when I closed QT scope.
That's a bit surprising; you don't happen to have a .grc with wh
As mentioned, the stream-to-message-passing gr-eventstream approach is
right for you.
Best regards,
Marcus
On 10/29/2015 01:47 PM, s.subrata...@gmail.com wrote:
> Thank you Marcus. I am trying to simulate a network with 2 transmitters and
> one receiver. The TX's transmit streams at random times
I am sorry for posting some irrelevant question to GR, USRP nor programming.
Just curious.
No matter which applications, technologies, standards,
(Ham, GPS, cellular, Wi-Fi, customed RF Tx/Rx, etc.)
has anyone implemented your own module into real hardware?
That is, transforming GNU radio flow gra
Hello,
well Marcus, you were right (like usual) ...
I don't know what exactly problem was, but concerning GRC, it looks like in
my first attempt to buld sphinx executable couldn't be found.
As for the min test, it doesn't work, it just stays blocked, no particular
output.
I tried GRC and it worke
Hey Logan,
There are sum fundamental principals I think you're overlooking when you
say "the Rx side still looks very noisy". You cannot just pipe the output
of the USRP into a sink and expect to get anywhere near a perfect
constellation ever. There are a lot of effects that need to be fixed befor
Your center frequency is in the 2.4GHz WiFi band. So, yeah, you could be
seeing lots of interference.
On 2015-10-29 11:41, Washbourne, Logan wrote:
> So I decimated both sides, right in front of the constellation plots. The TX
> side looks a lot better, no zero groupings. The RX side still
Thank you Tom
I used the script from the following link below
http://www.sbrac.org/files/build-gnuradio
then I make it executable and I opened a terminal in the in directory of
the script and then used the command " --verbose" it worked fine on ubuntu
15.04 64bit but the same process did NOT go wel
Thank you Marcus. I am trying to simulate a network with 2 transmitters and one
receiver. The TX's transmit streams at random times and the RX receives the sum
of the signals from both the TX's. The adder block however doesn't give any
output when one of its input stream is empty (i.e. when both
Sorry. Something went wrong when I copied pasted it but my actual code is:
import numpyfrom gnuradio import grfrom yall1 import *
class yall1_reconstruction_cc(gr.sync_block):
"""Yall1_reconstruction_block"""
def __init__(self,n,m):
self.N = n
self.M = m
phi
Hi Chad,
there's something wrong with the indention of the lines between "def
__init__" and "g.sync_block", and the same goes for your work function;
so that's my first stab at explaining misbehaviour.
Best regards,
Marcus
On 29.10.2015 13:01, Chad R wrote:
> Good day every one
>
> I have imple
Good day every one
I have implemented a Python block but I am not getting the results I
expected. I get the results I expect at any frequency=samp_rate/2^n where n
is any integer. My block makes use of a yall1 reconstruction algorithm to
reconstruct a signal from M=100 to N=1024 vector.
The code f
Hi Damindra,
I'm assuming you're looking at an out-of-tree (OOT) module that was
generated with gr_modtool (i.e. that follows the usual CMake architecture).
So, there's a CMakeLists.txt in your main folder and in lib/.
When you look at the main CMakeLists.txt (I'm linking to an example
here, [1])
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