Apparatus and method for channel interleaving in...

H - Electricity – 03 – M

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H03M 13/00 (2006.01)

Patent

CA 2609794

An apparatus and method for interleaving systematic bits and parity bits to generate an output sequence that can be transmitted in multi-slot packets from a base station to a remote station in a wireless communication system. The apparatus comprises a memory element and a control element coupled to the memory element, wherein the control element is configured to demultiplex the systematic bits and parity bits into sequences, wherein the systematic bits and parity bits are sequentially distributed among the sequences. The control element is further configured to reorder the sequences based on an index set, to group the sequences into segments and to interleave each of the segments forming matrices having elements. The control element is also configured to modulate the elements of the matrices, and to truncate the modulated elements of each matrix, so as to produce the output sequence which comprises truncated modulating elements from each matrix of the matrices.

Un appareil et procédé pour imbriquer des bits systématiques et des bits de parité pour générer une séquence de sortie qui peut être émise en paquets multi-créneaux à partir d'une station de base à destination d'une station à distance dans un système de radiocommunications. L'appareil comprend un élément de mémoire et un élément de commande couplé à l'élément de mémoire et configuré pour démultiplexer en séquence les bits systématiques et les bits de parité séquentiellement distribués entre les séquences. L'élément de commande est en outre configuré pour remettre en ordre les séquence sur la base d'un jeu d'indices, de façon à regrouper les séquences en segments et à imbriquer chacun des segments formant des matrices à éléments. L'élément de commande est également configuré pour moduler les éléments des matrices, et pour tronquer les éléments modulés de chaque matrice, de façon à produire la séquence de sortie qui comprend les éléments modulants tronqués provenant de chaque matrice du groupe des matrices.

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