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OFDM Spectral Overlap
OFDM Spectral OverlapConventional Frequency Division Multiplex (FDM) Multi-Carrier Modulation TechniqueIn conventional FDM, each carrier frequency is separated by a guard band to prevent interference. The frequencies in the guard band area cannot be used to carry information. The Transmitter contains an IFFT block and the receiver contains an FFT block. FFT and IFFT are a linear transform pair,