Interference channel
In information theory, the interference channel is the basic model used to analyze the effect of interference in communication channels. The model consists of two pairs of users communicating through a shared channel. The problem of interference between two mobile users in close proximity or crosstalk between two parallel landlines are two examples where this model is applicable. Unlike in the point-to-point channel, where the amount of information that can be sent through the channel is limited by the noise that distorts the transmitted signal, in the interference channel, it is mainly the signal from the other user that hinders the communication. However, the transmitted signals are not purely random (otherwise they would not be decodable), and, therefore, the users can reduce the effect of the interference by decoding the undesired signal. (Wikipedia).
