Free-Space Optical MISO Communications with an Array of Detectors

Muhammad Salman Bashir, Mohamed Slim Alouini

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Multiple-input multiple-output (MIMO) and multiple-input single-output (MISO) schemes have yielded promising results in free space optical (FSO) communications by providing diversity against fading of the received signal intensity. In this article, we have analyzed the probability of error performance of a muliple-input single-output (MISO) free-space optical channel that employs array(s) of detectors at the receiver. In this regard, we have considered the maximal ratio combiner (MRC) and equal gain combiner (EGC) fusion algorithms for the array of detectors, and we have examined the performance of these algorithms subject to phase and pointing errors for strong atmospheric turbulence conditions. It is concluded that when the variance of the phase and pointing errors are below certain thresholds, signal combining with a single array of detectors yields significantly better performance than a multiple arrays receiver. In the final part of the paper, we examine the probability of error of the single detector array receiver as a function of the beam radius, and the probability of error is minimized by (numerically) optimizing the beam radius of the received signal beams.

Original languageEnglish
Article number9247124
Pages (from-to)1765-1780
Number of pages16
JournalIEEE Open Journal of the Communications Society
Volume1
Early online date3 Nov 2020
DOIs
Publication statusPublished - 1 Dec 2020
Externally publishedYes

Cite this