MIMO Interference Channel With Confidential Messages: Game Theoretic Beamforming Designs
The authors study the achievable rate regions of the Multiple-Input Multiple-Output (MIMO) interference channel with confidential messages sent to two receivers. Under this model, each receiver is an eavesdropper for the other link and tries to decode both its own message and the message intended for the other receiver. They describe several transmission schemes for Gaussian interference channels and derive their achievable secrecy rate regions under the assumption that the transmitters use low complexity beamforming algorithms. They also consider the trade-offs associated with their need for Channel State Information at the Transmitter (CSIT). They approach the above topics from a game-theoretic perspective.