A methodology (FDMA, TDMA, CDMA) by which multiple users share access to a transmission channel. Most modern systems accomplish this through "demand assignment" where the specific parameter (frequency, time slot, or code) is automatically assigned when a subscriber requires it.
The simultaneous sharing of a common transmission bandwidth by multiple users. In satellite communications, it usually refers to the shared use of one or more transponders by multiple earth stations.
Multiple-access techniques aim to share a channel between two or more signals in such a way that each signal can be received without interference from another.
A digital technique allowing simultaneous access to a channel by multiple subscribers. Where each radio channel could accommodate one analog subscriber, each channel can now accommodate three digital channels. Emerging technology could allow each radio channel to carry from 6 to 15 digital channels.
A technique for accessing and sharing a communication medium by multiple stations. Also see CDMA, CSMA/CA, CSMA/CD, FDMA, TDMA.
The connection of a user to two or more switching centers by separate access lines using a single message routing indicator or telephone number. In satellite communications, the capability of a communications satellite to function as a portion of a communications link between more than one pair of satellite terminals concurrently.
The ability of nodes to remotely access a transmission medium such as a satellite transponder.
Access to a transponder by more than one user. Transponders can be accessed in three ways, by frequency (FDMA), time (TDMA) and code (CDMA).