In OFDM, what is the length of the cyclic suffix that is added before windowing?

1. What should be the length of the cyclic prefix in OFDM?
2. What is windowing in OFDM?
3. Why the first OFDM symbol has longer CP?
4. How many OFDM symbols are in extended cyclic prefix?

What should be the length of the cyclic prefix in OFDM?

In LTE, the normal CP duration is 7% of the core OFDM symbol (i.e., samples and samples).

What is windowing in OFDM?

Edge windowing is a windowing technique for Orthogonal Frequency Division Multiplexing (OFDM) signals based on the idea of using shorter cyclic prefix (CP) and longer window lengths at the edge subcarriers while keeping the symbol length fixed.

Why the first OFDM symbol has longer CP?

These longer symbols are generated by increasing the duration of the normal cyclic prefix, to ensure that each numerology has an integer number of symbols within each 0.5 ms time window, while also ensuring that as many symbol boundaries as possible coincide, e.g. every symbol boundary belonging to the 15 kHz ...

How many OFDM symbols are in extended cyclic prefix?

There are seven OFDM symbols per slot for a normal cyclic prefix (six in the case of an extended cyclic prefix). In each of those seven OFDM symbols, a length-12 sequence, obtained by phase rotation of the cell-specific sequence as described earlier, is transmitted.