In this paper, we propose opportunistic interference alignment (OIA) for three-transmitter multiple-input multipleoutput (MIMO) interference channels (ICs). In the proposed OIA scheme, each transmitter has its own user group that consists of K users, and each transmitter opportunistically selects the user whose received interference signals are most aligned. Thus, three-transmitter MIMO IC is o...

Space-time coding and spatial multiplexing are prime candidates for achieving high data rates and link quality in multiple-input multiple-output (MIMO) wireless links. However, both the schemes assume no channel knowledge at the transmitter. In a number of applications, channel knowledge can be made available at the transmitter. A natural question to ask is how to use these channel estimates to...