Abstract

This paper investigates the capacity of the multiple-input
multiple-output free-space optical intensity channel under a
per-input-antenna peak-power constraint and a total average-power
constraint over all input antennas. Our work considers the setup
with more transmit than receive antennas, and characterizes
capacity as an alternative optimization problem over the
distribution of the input vector times the channel matrix. This
alternative capacity expression is then used to obtain upper and
lower bounds on the capacity, which match asymptotically in the
high signal-to-noise ratio regime.



-||-   _|_ _|_     /    __|__   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