[Discuss-gnuradio] Is there any correlation between bandwidth and subcarriers-tounes in ofdm?

[Yingjie Chen]

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?

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