Interference Channel

An interference channel is a network consisting N senders and N receivers. There exists a oneto-one correspondence between senders and receivers. Each sender only wants to communicate with its corresponding receiver, and each receiver only cares about the information form its corresponding sender. However, each channel interferes the others. So an interference channel has N principal links and N(N − 1) interference links. This scenario often occurs, when several sender-receiver pairs share a common media. For example, in satellite communication, two satellites send information to its corresponding ground station simultaneously. Each ground station can receive the signals from both of the two satellites and its communication is interfered by the other pair’s communication. The study of this kind of channel was initiated by Shannon in 1961. However, this channel has not been solved in general case even in the general Gaussian case. In this summary, I will present some known important results about interference channel, including capacity region for interference channel with strong interference in section III, a inner bound of capacity region for general case by Carleial[4] in section IV and some results on Gaussian interference channel in section V.