Frank Rawlins wrote:
> Hi,
>
> Hope someone is able to help. I have gnuradio 3.1.1 on LINUX 7.10 and have
> now managed to install pyephem from a previous problem. The fm radio works
> fine but when I try to run radio astronomy I receive the following.
>
> Thank you,
>
> Frank
>
>
> [EMAIL PROT
> [ I/Q compensation ]
There's some discussion in Razavi's "RF Microelectronics", section 5.2.2,
and Kenington's "Software Defined Radio", section 5.3.1.1. The distinction
you mention between DC and AC might come from this LO self-mixing
business, a nonlinear effect, and indeed only at DC since
For example, if I have a 6 MHz bandwidth that I direct convert to
baseband can I tune a narrow band DDC (say 30 kHz) around that
bandwidth without the performance degradation?
If you tune the DDC to, say, +500 kHz, then the output of the DDC will be
contaminated with a small amount of signal
Jim Morash wrote:
How many MFLOPS does your DSP solution currently require? You mention
a floating-point DSP; is it the Texas Inst
C6713? If so is it running 300 MHz / 1200 MFLOPS?
Yes, that's right. I do fear we are using it rather inefficiently, though.
To clarify: we are running non-
> Date: Sun, 9 Dec 2007 04:58:36 -0800> From: [EMAIL PROTECTED]> To: [EMAIL
> PROTECTED]> CC: discuss-gnuradio@gnu.org> Subject: Re: [Discuss-gnuradio]
> direct conversion compensation> > > >> > Has anyone experimented with the
> digital compensation of the I/Q > > imbalance from direct convers
How many MFLOPS does your DSP solution currently require? You mention a
floating-point DSP; is it the Texas Inst
C6713? If so is it running 300 MHz / 1200 MFLOPS?
Yes, that's right. I do fear we are using it rather inefficiently, though.
___
Dis
Jim-
> I'm working on a software-defined acoustic communications transceiver,
> currently based on DSP-targeted code generated by MATLAB and Simulink.
> I'm looking into options for converting the project to free software and
> so far I have been reading about Scicos and GNURadio. As part of movin
Hi,
I'm working on a software-defined acoustic communications transceiver,
currently based on DSP-targeted code generated by MATLAB and Simulink.
I'm looking into options for converting the project to free software and
so far I have been reading about Scicos and GNURadio. As part of moving
to
Ketan Mandke wrote:
Martin,
Thanks for your response. It is disappointing to hear that the MIMO
support for 4 antennas will not be available for some time.
Could you provide some more details into why this problem of aligning
the transmit samples will be easier in the new m-block framework? Wil
Hi,
Hope someone is able to help. I have gnuradio 3.1.1 on LINUX 7.10 and have now
managed to install pyephem from a previous problem. The fm radio works fine
but when I try to run radio astronomy I receive the following.
Thank you,
Frank
[EMAIL PROTECTED]:~/gnuradio/gr-radio-astronomy/sr
On Fri, Dec 07, 2007 at 08:20:14AM -0800, Fasika Alemayehu wrote:
> Hi All ,
> I have just installed gnuradio and it was successful. But when i
> tried to run the gnuradio-examples, i get the error message
> 'ImportError: No module named gnuradio'. I have changed the
> PYTHONPATH to the directory
vsrk sarma wrote:
> Since usrp is not connected, I also tried sample program am_rcv.py
> given in KD7LMO.net with data capture sample provided by them. same
> error is observed. Noticed that libgnuradio-core.so.0 is a link to
> libgnuradio-core.so.0.0.0 both present in same directory
> /usr/loc
Yes , I did "sudo make install" when i was installing the gnuradio. Sitll I
couldnt figure out the problem.
-
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Discuss-gnuradio ma
Has anyone experimented with the digital compensation of the I/Q
imbalance from direct conversion asics like the one in the dbsrx? I'm
interested in the algorithms employed and how successful the
compensation can be.
It depends on how detailed a model you're willing to
implement and the st
I am new to gnuradio. loaded 3.1.1 version on Ubuntu 7.10 on my laptop
compaq nx6115.
whenever i try to run a .py program it is ending with error stating
unable find
libgnuradio-core.so.0. typical terminal output is copied below:
Traceback (most recent call last):
File "hfx2.py", li
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