OFDM - Orthogonal Frequency Division Multiplexing

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Today I will talk about variation of FDM: Orthogonal Frequency Division Multiplexing, or OFDM. OFDM is being used for many of the latest wireless and telecommunications standards, such as Wi-Fi 802.11ac, both 4G LTE and 5G cellular technologies, WiMAX, and many more. It is a very popular multiplexing technology.
So what is big deal of the OFDM? Why does it have many advantages over FDM?

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