COFDM (Coded Orthogonal Frequency Division Multiplexing)

A signal modulation scheme

that sends a stream of data symbols in a massively parallel fashion, with multiple independent subcarriers, that is, small slices of spectrum within the designated carrier frequency band. Each subcarrier carries a small of the total data stream. In the case of 802.11a, aka Wi-Fi5, for example, each carrier channel is 20

MHz wide, and is subdivided into 52 subcarrier channels, each of which is approximately 300 kHz wide.

See also 802.11a, carrier, channel, DMT, frequency band, modulation, orthogonal, signal, symbol, and Wi-Fi.

• local area network (LAN)
• local battery
• local call
• local exchange
• local exchange carrier (LEC)
• Local Internet Registry (LIR)
• local long distance
• local long distance
• local loop
• local loop
• local loop unbundling (LLU)
• local management interface (LMI)
• Local Multipoint Distribution Service (LMDS)
• Local Number Portability Administration (LNPA)
• local number portability (LNP)
• local routing number (LRN)
• location-based services
• logarithm (log)
• logical
• logical IP subnetwork (LIS)
• logical reach
• logical topology
• Logical Unit (LU)
• login
• log (logarithm)