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Characteristics of Optical Propagation through Rain for Infrared Space Communications
IEICE TRANSACTIONS on Communications
Publication Date: 2003/02/01
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Optical Wireless Communications
optical propagation, atmosphere, BER, scintillation index,
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The characteristics of 155 Mbps optical propagation through atmosphere at the wavelengths of 0.78 and 1.55 m over a 72 m range were measured. Two propagation characteristics were compared to examine the wavelength dependence on the rain rate and the aperture size of a receiver. An enhanced intensity exceeding the signal level measured in the absence of rain was observed at both wavelengths during 7.2 mm/h rain. The resultant bit error rate is shown to be dominated mainly by the rain-induced scintillation rather than the attenuation.