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[Discuss-gnuradio] OFDM output in spectrum analyzer
From: |
Natalia Olano |
Subject: |
[Discuss-gnuradio] OFDM output in spectrum analyzer |
Date: |
Mon, 20 Oct 2008 14:04:03 +0200 |
Hello,
I am testing the OFDM trunk code 9798 in openSUSE 10.3 (i586). I run
the benchmark_ofdm_tx.py script while having connected the USRP to a
spectrum analyzer and to my surprise, using the default parameters of
the script (those are: Modulation Type: bpsk, FFT length: 512,
Occupied Tones: 200, CP length: 128, Tx amplitude: 200)
The spectrum shape that I get corresponds more to a single carrier
modulation than to an OFDM signal (I see just 4 peaks spaced around
4MHz). I cannot see where all the subcarriers are gone!
There is not any error message prompted or apparently any reason so
that this is not working. I would really appreciate some help with
this issue.
Thanks in advance.
--
Natalia Olano
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