Two-way Interference Channels
Journal
IEEE International Symposium on Information Theory
Pages
2801-2805
Date Issued
2012-07
Author(s)
Abstract
We consider two-way interference channels (ICs) where forward and backward channels are ICs but not necessarily the same. We first consider a scenario where there are only two forward messages and feedback is offered through the backward IC for aiding forward-message transmission. For a linear deterministic model of this channel, we develop inner and outer bounds that match for a wide range of channel parameters. We find that the backward IC can be more efficiently used for feedback rather than if it were used for independent backward-message transmission. As a consequence, we show that feedback can provide a net increase in capacity even if feedback cost is taken into consideration. Moreover we extend this to a more general scenario with two additional independent backward messages, from which we find that interaction can provide an arbitrarily large gain in capacity. © 2012 IEEE.
Other Subjects
Channel parameter; Deterministic models; Interference channels; Outer bounds; Information theory; Signal interference
Type
conference paper