On the Performance of MIMO FSO Communications over Double Generalized Gamma Fading Channels

TL;DR

This paper analyzes the error rate performance of MIMO FSO communication systems over atmospheric turbulence channels modeled by the comprehensive Double Generalized Gamma distribution, highlighting the benefits of spatial diversity techniques.

Contribution

It introduces a new statistical channel model for turbulence and evaluates the BER performance of various MIMO configurations under this model.

Findings

Spatial diversity improves FSO link reliability.

Double Generalized Gamma model covers all turbulence conditions.

Performance analysis for SIMO, MISO, and MIMO systems.

Abstract

A major performance degrading factor in free space optical communication (FSO) systems is atmospheric turbulence. Spatial diversity techniques provide a promising approach to mitigate turbulence-induced fading. In this paper, we study the error rate performance of FSO links with spatial diversity over atmospheric turbulence channels described by the Double Generalized Gamma distribution which is a new generic statistical model covering all turbulence conditions. We assume intensity modulation/direct detection with on-off keying and present the BER performance of single-input multiple-output (SIMO), multiple-input single-output (MISO) and multiple-input multiple-output (MIMO) FSO systems over this new channel model.