Real sampling with DBSRX (& more!)


#1

Hi List,
is it possible to use only real sampling coming from the DBSRX?
Any one can send me the instruction to set correctly the VCO on the
MAX2118?

Thanks,

Davide A.

web: http://www.davideanastasia.com/
email: removed_email_address@domain.invalid


#2

2007/5/14, Davide A. removed_email_address@domain.invalid:

Hi List,
is it possible to use only real sampling coming from the DBSRX?

I am not sure if I understood your question correctly, but Is there a
reason why gr.complex_to_real() does not work? As long as you signal
is an appropriate IF, the real part of the complex signal should
contain all of the information.

Regards,

Trond D.


#3

Il giorno lun, 14/05/2007 alle 11.09 +0200, Trond D. ha scritto:

Hi List,
is it possible to use only real sampling coming from the DBSRX?

I am not sure if I understood your question correctly, but Is there a
reason why gr.complex_to_real() does not work?

Why not simply usrp.source_s()?

Davide A.

web: http://www.davideanastasia.com/
email: removed_email_address@domain.invalid


#4

2007/5/14, Davide A. removed_email_address@domain.invalid:

Il giorno lun, 14/05/2007 alle 11.09 +0200, Trond D. ha scritto:

Hi List,
is it possible to use only real sampling coming from the DBSRX?

I am not sure if I understood your question correctly, but Is there a
reason why gr.complex_to_real() does not work?

Why not simply usrp.source_s()?

http://lists.gnu.org/archive/html/discuss-gnuradio/2007-03/msg00406.html

Besides, floats are more convenient :slight_smile:


Trond D.


#5

2007/5/14, Davide A. removed_email_address@domain.invalid:

Why not simply usrp.source_s()?

http://lists.gnu.org/archive/html/discuss-gnuradio/2007-03/msg00406.html

Besides, floats are more convenient :slight_smile:

I’m not really sure I’ve understood what you want to tell me. Infact you
give me a link to a reply on a thread I open some times ago.

I only refered to Eric B.s statement that usrp.source_s is
broken, but I have not found anything regarding why it is broken. As I
said earlier, if you are just interested in the positive part of the
spectrum, then gr.complex_to_real should give you everything you need.


Trond D.


#6

On Mon, May 14, 2007 at 11:15:41AM +0200, Davide A. wrote:

Il giorno lun, 14/05/2007 alle 11.09 +0200, Trond D. ha scritto:

Hi List,
is it possible to use only real sampling coming from the DBSRX?

I am not sure if I understood your question correctly, but Is there a
reason why gr.complex_to_real() does not work?

Why not simply usrp.source_s()?

Because it doesn’t really do what you think it does.

It really just return the raw data, completely uninterpreted, from the
USRP. It should be called something other than usrp.source_s.

Eric


#7

Il giorno lun, 14/05/2007 alle 11.23 +0200, Trond D. ha scritto:

http://lists.gnu.org/archive/html/discuss-gnuradio/2007-03/msg00406.html

Besides, floats are more convenient :slight_smile:

I’m not really sure I’ve understood what you want to tell me. Infact you
give me a link to a reply on a thread I open some times ago.

Davide A.

web: http://www.davideanastasia.com/
email: removed_email_address@domain.invalid