Forward error correction with channel adaptation

H - Electricity – 03 – M

Patent

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H03M 13/03 (2006.01) H04J 11/00 (2006.01) H04L 1/22 (2006.01)

Patent

CA 2394526

A transmit-configuration mechanism (52) for configuring an FEC encoder (34) (including an associated interleaver (84)) for changing data channel characteristics. Channel information specifying a modulation mode and carriers capable of supporting the modulation mode for the data channel is received by a transmitting network node (12a) for use in a data transmission to a receiving network node (12b). The received channel information is based on a prior data transmission to the receiving network node (12b) over the data channel. Configuration values are computed from the received channel information and an amount of data to be transmitted in a data transmission. The FEC encoder (34) is configured to operate on the data transmission data amount according to the configuration information.

L'invention concerne un mécanisme (52) de transmission de configuration permettant de configurer une codeur de correction d'erreur sans circuit de retour (FEC) (34), comprenant un entrelaceur (84) associé servant à modifier les caractéristiques des canaux de données. On reçoit les informations de canal spécifiant un mode de modulation ainsi que des porteuses pouvant supporter ce mode de modulation pour le canal de données, à partir d'un noeud de réseau d'émission s'utilisant dans une transmission de données vers un noeud de réseau de réception. Les informations de canal reçues sont fonction d'une transmission de données précédente vers le noeud de réseau de réception via le canal de données. On calcule des valeurs de configuration à partir des informations de canal reçues et d'une quantité de données destinées à être transmises lors d'une transmission de données. Le codeur FEC (34) est configuré pour traiter ladite quantité de données de la transmission en fonction des informations de configuration.

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