OFDM Insights | Sumble

What is OFDM?

Orthogonal Frequency Division Multiplexing (OFDM) is a multi-carrier modulation technique used in digital communication systems. It divides a high-bandwidth channel into multiple narrowband subcarriers that are orthogonal to each other. This allows for efficient use of the available spectrum and robustness against frequency-selective fading and interference. OFDM is commonly used in wireless communication systems such as Wi-Fi (IEEE 802.11a/g/n/ac/ax), 4G LTE, and 5G NR, as well as in digital television broadcasting (DVB) and digital audio broadcasting (DAB).

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What other technologies are related to OFDM?

OFDM Competitor Technologies

FSK

FSK (Frequency-Shift Keying) is a modulation technique that can be used as an alternative to OFDM. It's a simpler modulation scheme but offers different performance characteristics.

mentioned alongside OFDM in 38% (141) of relevant job posts

PSK

PSK (Phase-Shift Keying) is another modulation technique that can be used as an alternative to OFDM, especially in simpler communication systems.

mentioned alongside OFDM in 26% (118) of relevant job posts

CDMA

CDMA (Code Division Multiple Access) is a different multiple access technology and serves as an alternative to OFDM-based systems.

mentioned alongside OFDM in 3% (103) of relevant job posts

WCDMA

WCDMA (Wideband Code Division Multiple Access) is a different multiple access technology and serves as an alternative to OFDM-based systems.

mentioned alongside OFDM in 4% (66) of relevant job posts

UMTS

UMTS (Universal Mobile Telecommunications System) is a different multiple access technology and serves as an alternative to OFDM-based systems.

mentioned alongside OFDM in 1% (56) of relevant job posts

GSM

GSM (Global System for Mobile Communications) is a different multiple access technology and serves as an alternative to OFDM-based systems.

mentioned alongside OFDM in 1% (68) of relevant job posts

OFDM Complementary Technologies

MIMO

MIMO (Multiple-Input Multiple-Output) is often used with OFDM to improve data rates and link reliability.

mentioned alongside OFDM in 30% (465) of relevant job posts

QAM

QAM (Quadrature Amplitude Modulation) is a modulation scheme commonly used in conjunction with OFDM to transmit data by varying the amplitude and phase of the carrier signal.

mentioned alongside OFDM in 26% (223) of relevant job posts

OFDMA

OFDMA (Orthogonal Frequency-Division Multiple Access) is a multi-user version of OFDM where different users are assigned different subcarriers, making it complementary.

mentioned alongside OFDM in 20% (69) of relevant job posts