OFDM
Technology & Computing abbreviation · Telecom
| Stands for | Orthogonal frequency-division multiplexing |
|---|---|
| Categories | Technology & Computing |
OFDM stands for Orthogonal frequency-division multiplexing, a telecom abbreviation.
Modulation method that splits a radio channel into many closely spaced subcarriers carrying data in parallel, which resists interference and signal reflections. It underlies Wi-Fi, LTE, 5G, DSL, digital TV and DAB radio.
Example: Because OFDM copes well with reflections, digital TV reception stays stable in the city.
Usage notes
The concept dates to the 1960s, but cheap digital signal processing made it practical in the 1990s. OFDMA, its multi-user version, assigns groups of subcarriers to different users and is a key feature of LTE and Wi-Fi 6. DSL uses a related technique called discrete multitone (DMT).
Related abbreviations
More telecom abbreviations
- MSISDN – Mobile Station International Subscriber Directory Number
- MVNO – Mobile virtual network operator
- MWC – Mobile World Congress
- NB-IoT – Narrowband Internet of Things
- NFC – Near-field communication
- NR – New Radio
- ONT – Optical network terminal
- OTT – Over-the-top
- PAYG – Pay as you go
- PBX – Private branch exchange
- PON – Passive optical network
- POTS – Plain old telephone service