Jacopo wrote:
Thanks! But where can i check this parameter?
Is it possible that fft_length= occupated carrier (--occupied-tones in
blksimpl/ofdm.py) + un_used carrier ? Where can i set the position of
the occupated_bins?
bye
To modify the bandwidth, you have to set the interpolation and
decimation rates. Yes, fft_length is the size of the FFT or total number
of subcarriers. Of this, only occupied-tones are used to carry data. The
unused carriers are distributed evenly on the carriers and you cannot
modify this behavior in the parameters currently, i.e., we do not
support non-contiguous OFDM.
Tom
2008/2/2, Matt Ettus <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>:
Jacopo wrote:
> Hello I'm studing an OFDM implementation on gnuradio. I want to
modify
> benchmark_ofdm_tx.py.
>
> I have just read ofdm.py and trasmit_path.py but I can't find how
> change some parameters.
>
> I'd want a bandwith of 20Mhz, where I can set this option? Where
can I
> set the carriers number? And the pilot bins?
>
> Is it possible to set an adaptive modulation for differents carriers?
The USRP hardware is not capable of bandwidths that high. You are
best
off staying around 6 MHz.
Matt
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