CP-OFDM Cyclic Prefix – Orthogonal Frequency Division Multiplexing
CP-OFDM is used as the access technology for 5G New Radio. Its operation is very similar to that of OFDM used in LTE, however CP-OFDM features variable subcarrier spacing termed “numerology”. Where LTE uses a fixed 15kHz subcarrier separation, CP-OFDM can utilize 15kHz, 30kHz, 60kHz, 120kHz, etc. When the subcarrier spacing is changed, the cyclic prefix duration per symbol also changes.
