Performance analysis of OOK modulation scheme with spatial diversity in atmospheric turbulence

Author

Joseph, T. ; Kaushal, Hemani ; Jain, Veerendra Kumar ; Kar, Soummya

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol. Bombay, Mumbai, India

fYear

2014

fDate

9-10 May 2014

Firstpage

1

Lastpage

3

Abstract

Free space optical (FSO) communication is a cost effective and high bandwidth access technique. A major impairment in FSO links is turbulence induced fading which severely degrade the link performance. Spatial diversity is one of the mitigation techniques for atmospheric turbulence to improve the bit error rate performance. In this paper, spatial diversity with equal gain combining (EGC), OOK modulation scheme with direct detection at the receiver are considered. An improvement in performance with spatial diversity is observed both at weak and strong turbulence level. At very strong turbulence level, a significant improvement in diversity gain is seen when the number of receivers are large though at the cost of increase in system complexity.

Keywords

amplitude shift keying; atmospheric turbulence; optical communication; FSO communication; OOK modulation scheme; atmospheric turbulence; equal gain combining; free space optical communication; performance analysis; spatial diversity; Bit error rate; Diversity reception; Fluctuations; Optical fiber communication; Receivers; Signal to noise ratio; Spatial diversity; Atmospheric turbulence; bit error rate; free space optical communication; log-normal distribution; negative exponential distribution; spatial diversity;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless and Optical Communication Conference (WOCC), 2014 23rd

Conference_Location

Newark, NJ

Type

conf

DOI

10.1109/WOCC.2014.6839936

Filename

6839936