Timeline for Why do we need FFT pairs for OFDM?
Current License: CC BY-SA 4.0
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| Dec 5, 2023 at 7:47 | comment | added | Kenny | Also - consider this. The output of the IFFT module is a finite length complex-valued sequence. If it is going to be transmitted, then that sequence will be pushed out once only. That sequence is not going to be transmitted in periodic (looped) fashion. So we don't expect the transmitted IFFT signal to be OFDM at all. It's just going to be quadrature modulation. That is, the physical spectrum of the 'IFFT' signal is not going to be physical 'OFDM' at all. We would expect the IFFT sequence to be looped/periodic in order to get a physical 'OFDM' spectrum. | |
| Nov 15, 2021 at 15:48 | history | edited | Kenny | CC BY-SA 4.0 |
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| Nov 11, 2021 at 7:05 | history | answered | Kenny | CC BY-SA 4.0 |