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I am learning about OFDM, and in my reading, I have noticed that (mentioned everywhere) synchronization is a very critical aspect of OFDM. Here, I am writing in the context of time synchronization (time offset).

What I understood that time offset is important if there are multiple transmitting mobiles in a cell, and due to different delays in each path it is difficult to find the frame starting time at the receiver. Will this concept apply if there is only a single mobile transmitting in a cell?

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    $\begingroup$ Yes, it is. Your receiver will need to be well synchronized in time, or else its dft will be meaningless $\endgroup$
    – mmmm
    May 3, 2021 at 0:30

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