Date Added: Jan 2012
MIMO Z Channel is investigated in this paper. The authors focus on how to tackle the interference when different users try to send their codewords to their corresponding receivers while only one user will cause interference to the other. They assume there are two transmitters and two receivers each with two antennas. They propose a strategy to remove the interference while allowing different users transmit at the same time. Their strategy is low-complexity while the performance is good.