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Re: [Discuss-gnuradio] Is there any correlation between bandwidth and su

From: Martin Braun (CEL)
Subject: Re: [Discuss-gnuradio] Is there any correlation between bandwidth and subcarriers-tounes in ofdm?
Date: Wed, 27 Mar 2013 11:03:13 +0100
User-agent: Mutt/1.5.21 (2010-09-15)

The fraction of the Nyquist zone occupied is equal to the number of
active tones divided by the FFT length. The actual bandwidth then
depends on your sampling rate.


On Wed, Mar 27, 2013 at 05:54:46PM +0800, Yingjie Chen wrote:
> Hi guys,
> I wonder if there is any correlation between baseband bandwidth of
> receiver side and fft-subcarriers-tounes of sender sider in OFDM? When
> I set the bandwidth to 20Mhz in sender side, the spectrum analyzer of
> receiver side shows only half of bandwidth(10Mhz). Does the reason
> that I use 128fft and 64 subcarriers account for this phenomenon?
> Sent from my iPhone
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

Karlsruhe Institute of Technology (KIT)
Communications Engineering Lab (CEL)

Dipl.-Ing. Martin Braun
Research Associate

Kaiserstraße 12
Building 05.01
76131 Karlsruhe

Phone: +49 721 608-43790
Fax: +49 721 608-46071

KIT -- University of the State of Baden-Württemberg and
National Laboratory of the Helmholtz Association

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