Receiver and method for two-stage equalization with...

Details Receiver and method for two-stage equalization with... Receiver and method for two-stage equalization with...

H - Electricity

04

L

H04L 25/03 (2006.01)

Patent

CA 2757908

A receiver (500) and method are described herein that address inter-symbol interference in a received signal (508) by using a two-stage equalizer (502) which includes a first demodulation stage (504) that processes the received signal and produces initial symbol decisions (510), and a non-linear equalization second stage (506) that uses the received signal to perform a sequential search in an attempt to improve upon the initial symbol decisions where if able to improve upon the initial symbol decisions then an output sequence (512) is obtained from the sequential search and if not able to improve upon the sequence metric threshold then the output sequence is the initial symbol decisions.

L'invention porte sur un récepteur (500) et un procédé qui s'attaquent au problème de brouillage inter-symbole dans un signal reçu (508) par utilisation d'un égaliseur à deux étages (502) qui comprend un premier étage de démodulation (504) qui traite le signal reçu et produit des décisions de symbole initiales (510), et un second étage d'égalisation non linéaire (506) qui utilise le signal reçu pour effectuer une recherche séquentielle dans une tentative d'améliorer les décisions de symbole initiales. S'il est possible d'améliorer les décisions de symbole initiales, alors une séquence de sortie (512) est obtenue à partir de la recherche séquentielle et s'il n'est pas possible d'améliorer le seuil de métrique de séquence, alors la séquence de sortie est constituée des décisions de symbole initiales.

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