Why other correlators(ml or pnac) can not work in ofdm example except for Schmidl and Cox correlator

GNU Radio
1

HI guy,

I have checked the code in ofdm_receiver.py and found that gnuradio uses
Schmidl and Cox as default correlator for frame detection. However, when
I
change to other correlators like* ml or pnac*,the receiver cannot
receiver
any more. Is there any problem with that? Thanks so much.

Best,
Kay

2

On Thu, May 02, 2013 at 04:52:53PM +0800, Yingjie C. wrote:

I have checked the code in ofdm_receiver.py and found that gnuradio uses
Schmidl and Cox as default correlator for frame detection. However, when I
change to other correlators like ml or pnac,the receiver cannot receiver any
more. Is there any problem with that? Thanks so much.

The OFDM code is under heavy maintenance right now. The code you’re
inspecting is a bit outdated and it’s quite likely it doesn’t work
properly.

MB

–
Karlsruhe Institute of Technology (KIT)
Communications Engineering Lab (CEL)

Dipl.-Ing. Martin B.
Research Associate

Kaiserstraße 12
Building 05.01
76131 Karlsruhe

Phone: +49 721 608-43790
Fax: +49 721 608-46071
www.cel.kit.edu

KIT – University of the State of Baden-Württemberg and
National Laboratory of the Helmholtz Association

3

Thanks for you reply. Can you tell me what should I do next? Update the
code or other things? Cause I am very urgent with my project and need to
use other correlator(like pnac). Thanks in advance.

2013/5/2 Martin B. (CEL) [email protected]

4

Hi Yingjie C. -

If your schedule requires that the code work, then feel free to hack on
it
and make it work! That’s the beauty of open source. You could then
contribute your code back to the community, thus helping everyone that
has
put effort into making GNURadio what it is, today =)

Cheers,
Ben