Channel (communications) in the context of "Coaxial cable"

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⭐ Core Definition: Channel (communications)

A communication channel refers either to a physical transmission medium such as a wire, or to a logical connection over a multiplexed medium such as a radio channel in telecommunications and computer networking. A channel is used for information transfer of, for example, a digital bit stream, from one or several senders to one or several receivers. A channel has a certain capacity for transmitting information, often measured by its bandwidth in Hz or its data rate in bits per second.

Communicating an information signal across distance requires some form of pathway or medium. These pathways, called communication channels, use two types of media: Transmission line-based telecommunications cable (e.g. twisted-pair, coaxial, and fiber-optic cable) and broadcast (e.g. microwave, satellite, radio, and infrared).

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Channel (communications) in the context of Communication source

A source or sender is one of the basic concepts of communication and information processing. Sources are objects which encode message data and transmit the information, via a channel, to one or more observers (or receivers).

In the strictest sense of the word, particularly in information theory, a source is a process that generates message data that one would like to communicate, or reproduce as exactly as possible elsewhere in space or time. A source may be modelled as memoryless, ergodic, stationary, or stochastic, in order of increasing generality.

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Channel (communications) in the context of Channel capacity

Channel capacity, in electrical engineering, computer science, and information theory, is the theoretical maximum rate at which information can be reliably transmitted over a communication channel.

Following the terms of the noisy-channel coding theorem, the channel capacity of a given channel is the highest information rate (in units of information per unit time) that can be achieved with arbitrarily small error probability.

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Channel (communications) in the context of Shared medium

In telecommunication, a shared medium is a medium or channel of information transfer that serves more than one user at the same time.

In order for most channels to function correctly, no more than one user can be transmitting at a time, so a channel access method must always be in effect.

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LINKED FROM (PARENTS)
← Communication source ← Channel capacity ← Shared medium
LINKS TO (CHILDREN)
Transmission medium → Connection-oriented communication → Multiplexed → Telecommunications → Computer network → Information transfer → Bit stream → Sender (telephony) → Receiver (information theory) → Channel capacity → Bandwidth (signal processing) → Hz → Data signaling rate → Bits per second → Signal → Transmission line → Telecommunications cable → Twisted-pair → Coaxial cable → Fiber-optic cable → Broadcast → Microwave transmission → Communications satellite → Radio → Consumer IR →