Howtosignalprocessing
2.2. 2 Waveform
| OFDM numerology | 15 kHz | 60 kHz |
|---|---|---|
| Frequency band | 0.45–6 GHz | 0.45–6 GHz 24–52.6 GHz |
| OFDM symbol duration | 66.67 μs | 16.67 μs |
| Cyclic prefix duration | 4.69 μs | 1.17 μs |
| OFDM symbol with CP | 71.35 μs | 17.84 μs |
- What is the duration of long cycle prefix in LTE?
- How does cyclic prefix work in OFDM?
- Why the first OFDM symbol has longer CP?
What is the duration of long cycle prefix in LTE?
LTE uses two types of CP, normal CP of 4.7 microseconds and Extended CP of 16.7 microseconds.
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 ...
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 ...
