Improving receiver performance in a communication network

Details Improving receiver performance in a communication network Improving receiver performance in a communication network

H - Electricity

04

B

H04B 1/10 (2006.01) H04L 1/20 (2006.01)

Patent

CA 2667026

Methods and apparatus are described for improving receiver performance in a multicarrier communication network in which an encoded symbol (250) is transmitted over a transmission channel (20) in the communications system. A model of the transmission channel (20) is estimated (718, 760), said model characterising an effect of intercarrier interference on at least one carrier in the multicarrier system. The received symbol (250) is decoded (720, 762) using the estimated model to remove a predicted effect of intercarrier interference. A pre-processor (40) is also described for operation in conjunction with a communications receiver (30) in the network. The pre-processor (40) includes a channel estimator (42) operable to estimate at least one feature of the communication channel based on a received signal. The pre-processor (40) modifies the received signal dependent on the at least one estimated feature and provides the modified signal to the communications receiver (30).

L'invention concerne des procédés et un appareil permettant d'améliorer les performances de récepteur dans un réseau de communication à porteuses multiples, avec transmission d' un symbole codé (250) sur un canal de transmission (20) dans le système de communication. Un modèle du canal de transmission (20) est estimé (718, 760), ledit modèle caractérisant un effet d'interférence inter-porteuse sur au moins une porteuse dans le système à porteuses multiples. Le symbole reçu (250) est décodé (720, 762) à l'aide du modèle estimé dans le but de supprimer un effet prévu d'interférence inter-porteuse. Un préprocesseur (40) est également mis en oeuvre parallèlement au récepteur de communication (30) dans le réseau. Le préprocesseur (40) comprend un estimateur de canal (42) opérationnel servant à estimer au moins une fonctionnalité du canal de communication sur la base d'un signal reçu. Le préprocesseur (40) modifie le signal reçu selon ladite ou lesdites fonctionnalités estimées et communique le signal modifié au récepteur de communication (30).

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