Title :
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
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;
Conference_Titel :
Global Telecommunications Conference, 2008. IEEE GLOBECOM 2008. IEEE
Conference_Location :
New Orleans, LO
Print_ISBN :
978-1-4244-2324-8
DOI :
10.1109/GLOCOM.2008.ECP.525
