Abstract

This paper investigates the capacity of block fading optical
intensity channels with more transmit than receive antennas under
different assumptions on the transmitter's channel state
information (CSI). Lower and upper bounds on the capacities are
derived using the entropy power inequality (EPI) and a dual
expression for capacity. Our lower-bounds for perfect and partial
CSI utilize a transmit-antenna cooperation strategy based on
minimum-energy signaling, which we proposed recently. For perfect
CSI, this lower bound matches the upper bound asymptotically in
the high signal-to-noise-ratio (SNR) regime. For imperfect CSI,
our lower bound is close to its perfect-CSI counterpart.



-||-   _|_ _|_     /    __|__   Stefan M. Moser
[-]     --__|__   /__\    /__   Senior Scientist, ETH Zurich, Switzerland
_|_     -- --|-    _     /  /   Adjunct Professor, National Yang Ming Chiao Tung University, Taiwan
/ \     []  \|    |_|   / \/    Web: https://moser-isi.ethz.ch/


Last modified: Tue Feb 4 13:50:45 CET 2020