What is OFDM and SC FDMA in LTE?

LTE is based on Orthogonal Frequency Division Multiplexing (OFDM) with cyclic prefix (CP) in the downlink, and on Single-Carrier Frequency Division Multiple Access (SC-FDMA) with cyclic prefix in the uplink. It supports both FDD and TDD duplex modes for transmission on paired and unpaired spectrum.

Read more

Is 5G NR supports OFDM?

5G NR supports a wide variety of use cases, and the OFDM numerologies help with supporting these use cases effectively . When higher frequency bands are used, the Doppler shift increases. An increased Doppler shift means increased Inter Carrier Interference (ICI).

Read more

Is OFDMA modulation technique?

Orthogonal frequency division multiplexing (OFDM) is a modulation technique that is used in several applications ranging from cellular systems (3GLTE, WiMAX), wireless local area networks (LANs), digital audio radio, underwater communications, and even optical light modulation.

Read more

What modulation does 4G use?

The digital modulation techniques used by 4G LTE networks are Quadrature Amplitude Modulation (QAM) and Quadrature Phase Shift Keying (QPSK) . Higher QAM modulation order, larger bandwidths and superior antenna techniques (MIMO) allow LTE to offer higher data rates. LTE Advanced networks use 256 QAM.

Read more