Transmiting a sequence of known bits using OFDM and file source


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On Thu, Dec 6, 2012 at 9:34 PM, jiajue ou [email protected]
wrote:

Best,

Jia

Jia,

Use this as a guide:
http://gnuradio.org/redmine/projects/gnuradio/wiki/FAQ#What-is-the-file-format-of-a-gr_file_sink

The file sources take the same structure of data and insert them into a
flowgraph.

Tom

Tom R. wrote in post #1088538:

On Thu, Dec 6, 2012 at 9:34 PM, jiajue ou
wrote:

Best,

Jia

Jia,

Use this as a guide:

http://gnuradio.org/redmine/projects/gnuradio/wiki/FAQ#What-is-the-file-format-of-a-gr_file_sink

The file sources take the same structure of data and insert them into a
flowgraph.

Tom

Hi Tom,

Thanks for your reply. Does it mean if I put a “0” in the .txt file,
“00000000” will be inserted to the flowgraph? (Byte I/O type is chosen.)

File Source(Byte, repeat)–>OFDM Mod–>OFDM Demod–>File Sink
In such a simple transceiver GRC loop test in a single computer, I put
one zero to the .txt in the File Source and modified
gnuradio/gr-digital/lib/digital_ofdm_frame_sink.cc to print real and
imaginary part of “sigrot” (which I suppose is the received data complex
symbols), the output, however, is not the corresponding symbols for
repeated (00000000). So, am I wrong?
If I want to get the received complex symbols for my specific data?
Which variables should I print out?
Thanks a lot!

Best,
Jia

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