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Re: [Discuss-gnuradio] guard band
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From: |
Martin Braun |
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Subject: |
Re: [Discuss-gnuradio] guard band |
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Date: |
Thu, 22 May 2014 16:03:23 +0200 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 |
On 05/22/2014 11:29 AM, Sara Chérif wrote:
> In ofdm transmitter , I want to add 6 subcarriers as a guard band
> between symbols , so that each symbol is fft + cp + guard band .. How to
> add this guard band ? is there a block which add zeros ?
> I think I can make guard band included in CP , I can make cp longer by 6
> then multiplying symbols by a window (multipling fft and actual cp by
> ones & multipling last 6 subcarriers by zeros ) . Is there a window or
> time domain filter in GNU Radio ?
See http://gnuradio.org/doc/doxygen/page_ofdm.html, you can simply use
those subcarriers you want. The default settings (see e.g. the OFDM
examples) all have empty sub-carriers for this reason.
M
> Thanks.
>
>
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