H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 10/10 (2006.01)
Patent
CA 2322685
The present invention provides an apparatus and a method for improved connectivity in wireless optical networks. Therefore at least two or more receiving units are used which receive an infrared signal and convert it to a digital signal. The digital signals represent data in the form of frames whereby each frame comprises at least a data field and a header field containing a preamble. A selector determines a measure related to the signal-to-noise ratio of the preamble and compares the measures in order to select the best suited signal for further processing.
L'invention concerne un appareil et un procédé permettant d'améliorer la capacité de connexion dans les systèmes de communication à fibres optiques sans fil. On utilise à cet effet au moins deux unités de réception qui reçoivent un signal infrarouge et le convertissent en signal numérique. Les signaux numériques représentent des données sous forme de trames, chacun contenant un champ au moins de données et un champ d'en-tête présentant un préambule. Un dispositif de sélection détermine une mesure associée au rapport signal/bruit du préambule et compare les mesures de manière à sélectionner le signal se prêtant le mieux à un traitement ultérieur.
Gfeller Fritz
Hirt Walter
Ingham Brian Richard
Barrett B.p.
International Business Machines Corporation
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