$Y$-$\Delta$ Product in 3-Way $\Delta$ and Y-Channels for Cyclic Interference and Signal Alignment
نویسندگان
چکیده
In a full-duplex 3-way ∆ channel, three transceivers communicate to each other, so that a number of six messages is exchanged. In a Y channel, however, these three transceivers are connected to an intermediate full-duplex relay. Loop-back selfinterference is suppressed perfectly. The relay forwards networkcoded messages to their dedicated users by means of interference alignment (IA) and signal alignment. A conceptual channel model with cyclic shifts described by a polynomial ring is considered for these two related channels. The maximally achievable rates in terms of the degrees of freedom measure are derived. We observe that the Y channel and the 3-way ∆ channel provide a Y -∆ product relationship. Moreover, we briefly discuss how this analysis relates to spatial IA and MIMO IA.
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