H - Electricity – 04 – J
Patent
H - Electricity
04
J
H04J 11/00 (2006.01)
Patent
CA 2338560
Methods and apparatus for synchronization of a transmitter and a receiver are based on orthogonal sequences having optimized correlation properties. The transmitter may generate signed versions of S-Hadamard sequences that are obtained by position- wise scrambling a set of Walsh-Hadamard sequences with a special sequence having complex elements of constant magnitude. The receiver estimates a time location and sequence identity of a received version of the synchronization signal.
Selon cette invention, des procédés et un appareil de synchronisation d'un émetteur et d'un récepteur sont basés sur des séquences orthogonales possédant des propriétés de corrélation optimisées. L'émetteur peut générer des versions signées des séquences de S-Hadamard, obtenues par l'embrouillage en fonction de la position d'un ensemble de séquences de Walsh-Hadamard au moyen d'une séquence spéciale possédant des éléments complexes à magnitude constante. Le récepteur fait une estimation d'une position dans le temps et de l'identité de séquence d'une version reçue du signal de synchronisation.
Nystrom Johan
Popovic Branislav
Ericsson Canada Patent Group
Telefonaktiebolaget L. M. Ericsson (publ)
Telefonaktiebolaget Lm Ericsson
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