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Error Rate Performance Analysis of M-ary Coherent FSO Communications with Spatial Diversity in Strong Atmospheric Turbulence

Jinkyu KANG, Seongah JEONG, Hoojin LEE

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Summary :

In this letter, we analyze the error rate performance of M-ary coherent free-space optical (FSO) communications under strong atmospheric turbulence. Specifically, we derive the exact error rates for M-ary phase shift keying (MPSK) and M-ary quadrature amplitude modulation (MQAM) based on moment-generating function (MGF) with negative exponential distributed turbulence, where maximum ratio combining (MRC) receiver is adopted to mitigate the turbulence effects. Additionally, by evaluating the asymptotic error rate in high signal-to-noise ratio (SNR) regime, it is possible to effectively investigate and predict the error rate performance for various system configurations. The accuracy and the effectiveness of our theoretical analyses are verified via numerical results.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E105-A No.5 pp.897-900
Publication Date
2022/05/01
Publicized
2021/10/28
Online ISSN
1745-1337
DOI
10.1587/transfun.2021EAL2062
Type of Manuscript
LETTER
Category
Communication Theory and Signals

Authors

Jinkyu KANG
  Myongji University
Seongah JEONG
  Kyungpook National University
Hoojin LEE
  Hansung University

Keyword