You will need a soundcard and then you set up an stereo source. I/Q at
baseband is delivered.
There is no softrock interface in gnuradio because there is no hardware to
control. It delivers a 100 kHz or so and this is centered on the crystal
frequency on the softrock.
In
I had a question along the same line.
Has anyone written code for other sources that can be used in place of
the usrp as the input source (besides the relatively low speed computer
sound interfaces)?
For example to replace
self.u = usrp.source_c()
with reference to some alternate high
Hello all!
I wanna make sure the way to calculate the transmission bandwidth for USRP
system. As we know, the bitrate could be obtained based on bitrate=128/m/k,
where m is the interpolation rate and k is the samples per symbol(suppose we
use bpsk modulation), once we get bitrate, how to get
Hello, everybody!
I am working on the demo file:
gnuradio-examples/python/digital/benchmark_tx.py. In the file transmit_path.py,
it is said specify bitrate. samples-per-symbol and interp/decim will be
derived. How are interp/decim rate and samples-per-symbol derived
respectively? what is the
Thank you, Brian!
Now i know how the interpolation changes, but if bitrate were set, how are
interp/decim rate and
samples-per-symbol derived respectively? Is there a default value for
interpolation rate? Thanks!!!
Bill
- Original Message
From: Brian Padalino [EMAIL PROTECTED]
To:
I have installed gnuradio but when I run a python code, I receive the following
error:
[EMAIL PROTECTED] python]# ./usrp_fsk4.py -F test.dat -p 1 demod_text.txt
Traceback (most recent call last):
File ./usrp_fsk4.py, line 32, in module
from gnuradio import gr, gru, usrp, optfir,
Paul, you rock
Changing the decimation factor (-n) to a bigger value (the default
value is 1) works like a charm and solves all my GUI freeze issues,
even within VMware.
I started with -n 100 (as you suggested) for usrp_oscope.py, but it
is too much and the refresh rate is very slow. Then I
Hello Teka,
What OS/platform are you using? What is the value of your PYTHONPATH
environment variable?
Also, check that when you compiled GNU Radio, the USRP module was not discarded.
Regards,
--
Raul Siles
www.raulsiles.com
On Sat, Sep 27, 2008 at 12:58 AM, teka yemane [EMAIL PROTECTED]
Thanks should go to Jon Jacky, who identified the problem some time ago.
Paul
-Original Message-
From: Raul Siles [mailto:[EMAIL PROTECTED]
Sent: Friday, September 26, 2008 4:07 PM
To: Paul Mathews
Cc: discuss-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio] GNU-Radio GUI applications
Suppose I have myblock = gr.multiply_const_ff(var_value) sitting
somewhere in my flowgraph. I want the user to be able to change the
value of var_value by using a slider. I know how to make a slider, but
I am not able to find information on how to dynamically change the
block at runtime. One
On Fri, Sep 26, 2008 at 9:40 PM, Bill Stevenson
[EMAIL PROTECTED] wrote:
bitrate=128M/interpolation rate/samples per symbol* bit per symbol
Through the powers of algebra:
A = B / C / D * E
Solve for C.
Brian
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Discuss-gnuradio mailing
RE: USRP vs alternatives
Simple Software Radio Peripheral
http://oscar.dcarr.org/ssrp/index.php
SR-1/Software Radiohttp://volodya-project.sourceforge.net/SR/SR-1/sr1.php
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