Cyclic prefix length in baseband OFDM with ZF equalizer

1. What should be the length of the cyclic prefix in OFDM?
2. How do you find the cyclic prefix length?
3. How does cyclic prefix work in OFDM?
4. What are the typical values of LTE cyclic prefix for normal?

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).

How do you find the cyclic prefix length?

The distance be calculated using a simple Time, distance formula. For example, let's take 15 KHz having CP for long symbol as 5.2 µs. The radio signal travel with velocity of light which is C= 3.0 x 10⁸ m/s, then distance can be calculated as velocity x time = (3.0 x 10⁸ ) x (5.2 x 10^-6 ) = 1560 meter.

How does cyclic prefix work in OFDM?

The cyclic prefix allows a OFDM transmitter receiver pair to accomplish to important objectives, provided that the length of the multipath channel is less than or equal to the length of the cyclic prefix plus one: 1) it eliminates interblock interference, and 2) it enables easy equalization, as for the remainder of the ...

What are the typical values of LTE cyclic prefix for normal?

LTE uses two types of CP, normal CP of 4.7 microseconds and Extended CP of 16.7 microseconds.