Signal Detection in Optical Communications through the Atmospheric Turbulence Channel

Author

Brandenburg, Jacob C. ; Liu, John Q.

Author_Institution

Dept. of Electr. & Comput. Eng., Wayne State Univ., Detroit, MI

fYear

2008

Firstpage

1

Lastpage

5

Abstract

The probability of a miss in the detection of a signal in an optical communications system through the turbulent atmosphere using intensity modulation is studied. The turbulence of the atmosphere causes scintillation of the received signal intensity which is treated as a lognormal random process. The received background radiation and electronic noise in the receiver is treated as additive white Gaussian noise (AWGN). A Chernoff bound is derived. For practical values of the signal-to-noise power ratio (SNR), a series solution for the characteristic function of the lognormal random variable is used to find the probability of miss. Simulation results agree with theoretical results. The method developed in this paper can be used by the system designer to choose the proper signal length and meet the system specifications for signal detection.

Keywords

AWGN; atmospheric turbulence; intensity modulation; log normal distribution; optical communication; receivers; signal detection; Chernoff bound; additive white Gaussian noise; atmospheric turbulence channel; background radiation; electronic noise; intensity modulation; lognormal random process; optical communications; receiver; signal detection; signal intensity; signal-to-noise power ratio; system specifications; AWGN; Additive white noise; Atmosphere; Gaussian noise; Intensity modulation; Optical fiber communication; Random processes; Signal detection; Signal processing; Solid scintillation detectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 2008. IEEE GLOBECOM 2008. IEEE

Conference_Location

New Orleans, LO

ISSN

1930-529X

Print_ISBN

978-1-4244-2324-8

Type

conf

DOI

10.1109/GLOCOM.2008.ECP.525

Filename

4698300