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MIMO Multiway Relaying With Clustered Full Data Exchange: Signal Space Alignment and Degrees of Freedom
IEEE Transactions on Wireless Communications
Recently, much research interest has been attracted towards the design of efficient communication mechanisms for multiple-input multiple-output (MIMO) multiway relay channels (mRCs). In this paper, we investigate achievable degrees of freedom (DoF) of the MIMO mRC with L clusters and K users per cluster, where each user is equipped with M antennas and the relay with N antennas. Our analysis is focused on a new data exchange model, termed clustered full data exchange, i.e., each user in adoi:10.1109/twc.2014.2323243 fatcat:lsxyk26x3zgznfx56tcdxbbeim