1 research outputs found
Embedding Information in Radiation Pattern Fluctuations
The radiation pattern of transmit antennas varies and fluctuates as receivers
change their location, other objects move around, and due to the antenna design
itself. In this paper, we demonstrate how this observation can be exploited to
align most of the interference signal power and significantly increase the
average achievable communication rates. More precisely, in the context of
-user interference channels, we propose a blind interference alignment
scheme that combines multi-layer coding at the transmitters and a
post-processing methodology at the receivers to align a significant portion of
the interference signal power. Our scheme does not rely on any channel state
information (CSI), hence the term blind, and only relies on the statistics of
the radiation pattern fluctuations. Our proposed communication methodology
overcomes some of the barriers in practical implementation of the interference
alignment concept. Due to the complexity of the expressions, in this work, we
numerically evaluate the achievable rates in different scenarios, demonstrate
the gains of our proposed strategy, and compare our results to the prior works
with perfect CSI.Comment: To appear in IEEE International Symposium on Information Theory
(ISIT), 202