How is symbol synchronization with OFDM done?

1. What is OFDM synchronization?
2. What is the main objective of time synchronization for OFDM?
3. What are training symbols in OFDM?
4. How many OFDM symbols are there?

What is OFDM synchronization?

Abstract: Orthogonal Frequency Division Multiplexing (OFDM) is a advance bandwidth efficient digital modulation technique highly adopted for the broadband wireless services because it gives high performance in the multipath fading environments.

What is the main objective of time synchronization for OFDM?

Therefore, the purpose of a timing recovery scheme in OFDM is to ensure that the FFT window starts from within the region of correct samples.

What are training symbols in OFDM?

Training OFDM symbols or equivalently OFDM preambles are transmitted at the beginning of the transmission record, while pilot symbols (complex exponentials in time) are embedded in each OFDM symbol, and they are separated from information symbols in the frequency-domain [1–3].

How many OFDM symbols are there?

The number of OFDM symbols per slot is 14 for a configuration using normal cyclic prefix. For extended cyclic prefix, the number of OFDM symbols per slot is 12.