Recombinaison Et Traitement Des Signaux Issus Des Systèmes O-Mimo
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Imported Edition - Ships in 18-21 Days
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La technologie MIMO Optique et précisément la technique MGDM a été proposé afin d'améliorer la bande passante de transmission des liens MMF en créant des canaux de communication parallèles au cours de cette mème fibre. Dans ce travail, nous avons établi par une étude théorique un modèle analytique de la fibre MMF pour la technique MGDM. Nous avons étudié les meilleures conditions d'émission et de réception pour améliorer la qualité et la capacité du système. Nous avons diminué la complexité des systèmes O-MIMO par la diagonalisation de la matrice de transfert. Des techniques de pré-codage ont été ajouté à notre système afin accroître ses performances en terme de robustesse, débits et qualité de service. Les effets mécaniques qui perturbent la propagation et dégradent la performance de transmission par MMF tel que le bruit et l'effet de courbure ont été aussi étudié et l'influence de la longueur de la fibre, du débit binaire, du nombre d'utilisateur ainsi que le choix du canal de propagation a été analysé. De plus, nous avons proposé un modèle de multiplexage basé sur MGDM, avec une orthogonalité entre les services radio et les autres services.
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