CDMA
One of the problems to be solved in data communications is how to share among multiple users using a single communication channel or transmission medium that can manage multiple submissions simultaneously. Without a method of organization, appears interference that might well be annoying, or directly impede communication. This concept is called multiplexing or media access control, depending on context. It applies the name “multiplexing” to cases where a single device determines the allocation between different communications channel, such as a hub located at the end of a fiber optic cable, for the end user terminals, multiplexing is transparent. Is used instead the term “media access control” when the user terminals in communication with a device that makes network node, which must use a communication scheme to avoid interference between them, as example a group of mobile phones in communication with a satellite operator.
