On 6/18/2010 12:43 AM, Elvis Dowson wrote:
Would it make sense to model and simulate using Matlab/Simulink, for
the amplifiers, mixers and other components using their datasheets?
Simulation is helpful, but it cannot replace the design process. The
parameters you will need can potentially come
Hi Jeffrey,
Thank you for the reply.
On Jun 18, 2010, at 8:26 AM, Jeffrey Lambert wrote:
> This type of front-end typically consists of low noise amplifier (LNA),
> mixer, and perhaps a baseband/IF amplifier or automatic-gain control (AGC)
> amplifier. Determing the requ
Hello,
An RF Front-end can take many forms, depending upon the application. For
use with the USRP or similar hardware, a direct-conversion approach is
probably adequate. This type of front-end typically consists of low
noise amplifier (LNA), mixer, and perhaps a baseband/IF amplifier or
auto
Hi,
Yes, it is quite intensive. You can try increasing the
decimation/interpolation, if you see that the CPU is not keeping up
with the load. However, you have to be careful about the frequency
offset between the transmitter and the receiver as you might get too
large of the misalignment when you
On Thu, Jun 17, 2010 at 5:59 PM, Andy Blueman wrote:
> Hi all
>
> In the USRP Documentation file which I got from gnuradio.org there is a link
> to some paper which is "good for understanding the CORDIC" (page 31), and
> the link http://web.njit.edu/~hkj2/CORDIC.pdf is given. Unfortunately link
>
Hi all
In the USRP Documentation file which I got from gnuradio.org there is a link
to some paper which is "good for understanding the CORDIC" (page 31), and
the link http://web.njit.edu/~hkj2/CORDIC.pdf is given. Unfortunately link
doesn't work anymore, so I wonder if someone has it and could up
Hello,
I need again your help for this problem:
- I want to locate the peaks (local maximum) of the input signal, which is
sinc-function pulse (the 2 gray points in picture sincpuls.png, not the
neighbour peaks).
How can I use the gr_peak_detector in grc to do this ? which values I should
give th
Hello,
Have you tried the new Xilinx's FIFOs ?
All constraints were met after regenerating the FIFOs using Fifo Generator
6.1.
I used ise12 branch and compiled the raw ethernet code.
2010/6/1 Matt Ettus
>
>
> The USRP2 FPGA image can now be built with ISE 12.x. ISE 11.x probably
> also works
On Thu, Jun 17, 2010 at 8:17 AM, Philip Balister wrote:
> I just noticed Swig 2.0 is out. Has anyone tried it with gnuradio yet?
>
> Philip
I just tried it with a new build. I didn't notice any immediate differences.
Thomas
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Works for me on OSX.
On Jun 17, 2010, at 9:17 AM, Philip Balister wrote:
I just noticed Swig 2.0 is out. Has anyone tried it with gnuradio yet?
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On 06/17/2010 09:58 AM, Elvis Dowson wrote:
Hi,
I would like to design a custom board based on the Spartan-3AN FPGA,
based on the Spartan-3AN FPGA Starter Kit, but would like to build my own RF
front-end.
http://www.analog.com/en/rfif-components/rxtx-subsystems/products/index.html
I
Hi,
I would like to design a custom board based on the Spartan-3AN FPGA,
based on the Spartan-3AN FPGA Starter Kit, but would like to build my own RF
front-end.
http://www.analog.com/en/rfif-components/rxtx-subsystems/products/index.html
If I look at the AD9874 IF-to-Bits RX subsystem
On Thu, Jun 17, 2010 at 02:53:28PM +1000, Kyle Zhou wrote:
> Thanks Eric,
> I am using GNU Radio git depository installed a month ago.
> tried on Cygwin 1.7.5+WinXP and OSX 10.6.3+Macbook, both behaved the same.
> I'll try ubuntu tomorrow when I have access to another PC.
> Ctrl+C exits the program
Well I am glad to say my low power problem is fixed.
In the end I had to go into my uhd directory do a git pull
followed by a make and then a make install.
I now have 60 mW on 1.3 GHz.
Thanks for the help guys, especially to Jason Abele.
- Charles
http://www.g4guo.blogspot.com/
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Hi Catalin,
Thanks a lot for taking the time to reply.
On Jun 17, 2010, at 7:27 PM, Catalin Patulea wrote:
> Can you clarify, by "FM Radio" do you mean broadcast FM (87.5-108 MHz)?
Yes, I thought I'd start with something simple, and implement a FM radio
receiver.
> In t
On Wed, Jun 16, 2010 at 11:15 PM, Elvis Dowson wrote:
> Would this onboard ADC be sufficient to implement an FM Radio receiver with
> GNU Radio?
Can you clarify, by "FM Radio" do you mean broadcast FM (87.5-108 MHz)?
In terms of bandwidth, 3Msps sounds sufficient, but you'll have to
implement an
I just noticed Swig 2.0 is out. Has anyone tried it with gnuradio yet?
Philip
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2010/6/17 lishan_wh :
> Hi,
>
> I wonder how can I get the dBm value by using usrp_spectrum_sense.py.
>
> should I do it as follows?
>
> fft = gr.fft_vcc()
>
> c2mag = gr.complex_to_mag_squared() (or without squared?)
>
> log = gr.nlog10_ff()
>
> stats = gr.bin_statistics_f()
>
> self.connect(sel
On Thu, Jun 17, 2010 at 06:03:46PM +0800, lishan_wh wrote:
> I wonder how can I get the dBm value by using usrp_spectrum_sense.py.
>
> should I do it as follows?
>
> fft = gr.fft_vcc()
>
> c2mag = gr.complex_to_mag_squared() (or without squared?)
>
> log = gr.nlog10_ff()
>
> stats = gr.bin_s
Hi,
I wonder how can I get the dBm value by using usrp_spectrum_sense.py.
should I do it as follows?
fft = gr.fft_vcc()
c2mag = gr.complex_to_mag_squared() (or without squared?)
log = gr.nlog10_ff()
stats = gr.bin_statistics_f()
self.connect(self.u,s2v,fft,c2mag,log,stats)
in main functio
missed off the filename: ofdm_receiver.py
:)
On 17 June 2010 10:27, Mike Jameson wrote:
> Hi Rahman,
>
> Try broadening the bandwidth of the receiver to allow for the frequency
> offset between your USRP2s:
>
> In /usr/lib/python2.6/dist-packages/gnuradio/blks2impl
>
> on line 67 look for "tb
Hi Rahman,
Try broadening the bandwidth of the receiver to allow for the frequency
offset between your USRP2s:
In /usr/lib/python2.6/dist-packages/gnuradio/blks2impl
on line 67 look for "tb = bw*0.08"
change this to a higher value such as "tb = bw*1.5"
This works for me using usrps.
Mike
On
hi all:
I found there is a program (pick_bitrate.py) about bit-rate in the
/gnuradio-example/python/digital/ .And there is one quertion confuse me about
this program.
There is a formula about bit-rate in the program such as bitrate =
converter_rate / interp / samples_per_symbol.
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