Channel equalisation in particular for fading channels

H - Electricity – 04 – B

Patent

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Details

H04B 7/005 (2006.01) H04B 1/10 (2006.01) H04L 1/06 (2006.01) H04L 25/03 (2006.01)

Patent

CA 2095025

A digital radio system is described in which data symbols are transmitted over a radio channel using multi-level modulation. A receiver receives the multi-level modulation signal and a first symbol estimator gives a first estimate of a symbol represented by the received multi-level modulation signal and a second estimator gives a second estimate of a symbol represented by said signal; the output of the first estimator is provided when the first and second outputs are the same or have a predetermined relationship and an ouput based on the output of the second estimator is provided otherwise.

Système radio numérique dans lequel des symboles de données sont transmis sur un canal radio par modulation multiniveau. Un récepteur reçoit le signal de modulation multiniveau. Puis un premier estimateur de symbole donne une première estimation d'un symbole représenté par le signal de modulation multiniveau reçu et un deuxième estimateur donne une deuxième estimation d'un symbole représenté par ledit signal. La sortie du premier estimateur est générée lorsque la première et la deuxième sorties sont identiques ou ont une relation prédéterminée, sinon une sortie basée sur la sortie du deuxième estimateur est générée.

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