Achievable Outage Rate Regions for the MISO Interference Channel
(English)Manuscript (preprint) (Other academic)
We consider the slow-fading two-user multiple-input single-output (MISO) interference channel. We want to understand which rate points can be achieved, allowing a non-zero outage probability. We do so by defining four different outage rate regions. The definitions differ on whether the rates are declared in outage jointly or individually and whether the transmitters have instantaneous or statistical channel state information (CSI). The focus is on the instantaneous CSI case with individual outage, where we propose a stochastic mapping from the rate point and the channel realization to the beamforming vectors. A major contribution is that we prove that the stochastic component of this mapping is independent of the actual channel realization.For the case of statistical CSI, under the assumption of zero-mean Gaussian channel vectors, we compute the outage probabilities in closed form. We also prove that the statistical CSI outage rate regions are always contained in the instantaneous CSI outage rate regions and that the common outage rate regions are always contained in the individual outage rate regions.
Engineering and Technology Communication Systems
IdentifiersURN: urn:nbn:se:liu:diva-100818OAI: oai:DiVA.org:liu-100818DiVA: diva2:663758