publication . Conference object . 2008

On free-space optic communication with alamouti-type coding and direct detection

El Tabach, Mamdouh; Tortelier, Patrick; Pyndiah, Ramesh; Bouchet, Olivier;
Open Access English
  • Published: 07 May 2008
  • Publisher: HAL CCSD
  • Country: France
Abstract
International audience; By transmitting unipolar positive signals, a novel association of Alamouti space-time coding to free-space optic(FSO) communication is presented. We examine intensity modulation (IM) based on electrical fast Fourier transform (FFT)design with Hermitian symmetry. The proposed technique aims at limiting signal fading due to scintillation. It maximizes the spatial diversity, increases the reliability, and makes it possible to use digital complex QAM modulations while preserving direct detection (DD).
Subjects
arXiv: Computer Science::Information Theory
ACM Computing Classification System: Data_CODINGANDINFORMATIONTHEORY
free text keywords: Alamouti, FSO, Optical wireless, Spatial diversity, [ SPI.SIGNAL ] Engineering Sciences [physics]/Signal and Image processing, [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing
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