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A network consisting of a point-to-point (P2P) link and a multiple access channel (MAC) sharing the same medium is considered. The resulting interference network, with three transmitters and two receivers is studied from degrees of freedom (DoF) perspective, with and without cognition. Several cognition variants are examined. Namely, the setup is studied with (1) no cognitive transmitters, (2) a cognitive...
For multi-input multi-output (MIMO) interference channels, we study the precoder design for interference alignment (IA) that enables the use of low complexity detectors for joint detection. It is shown that the IA over lattices (IA-L) becomes possible for two receivers (where joint detection can be performed by a low complexity detector), while one receiver has the interfering signals over a certain...
In this paper, we propose a new interference alignment (IA) scheme designing jointly the linear transmitter and receiver for the MIMO interference channel system, using minimum total mean square error criterion, subject to individual transmit power constraints. We show that transmitter and receiver under such criterion could be realized through a joint iterative algorithm. The convergence of the proposed...
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