Re: [Discuss-gnuradio] GNU Radio OFDM Theori

[Martin Braun]

On Wed, Mar 25, 2009 at 02:15:35AM -0700, adib_sairi wrote:
> Hi every one,
> i would like to know how the OFDM Library in GNU Radio is being constructed?
> what is the theory? can any body help me? Thank you very much..

Assuming you understand the theory behind OFDM in general, a good place
to look is gnuradio-examples/python/ofdm/benchmark* code. You can run
the examples with a flag '--log', which will dump the streams after most
intermediate steps into separate .dat-files for you to inspect.
These examples use the 'ofdm' python module, its source is in
gnuradio-core/src/python/gnuradio/ofdm.py. This contains a complete flow
graph starting with a message queue which takes bits ending in a I/Q
sample stream and vice versa.

Should you know nothing about OFDM, I recommend not trying to figure it
out from the GNU Radio code, but to read up on the theory first. OFDM is
covered in most of the standard books on digital wireless communication.

Have fun,
MB

-- 
Dipl.-Ing. Martin Braun           Phone: +49-(0)721-608 3790
Institut fuer Nachrichtentechnik  Fax:   +49-(0)721-608 6071
Universitaet Karlsruhe (TH)       http://www.int.uni-karlsruhe.de/

pgpX2QtYlwdr9.pgp
Description: PGP signature