Technique for improving the blind convergence of an adaptive...

Details Technique for improving the blind convergence of an adaptive... Technique for improving the blind convergence of an adaptive...

H - Electricity

04

B

H04B 7/005 (2006.01) H04L 25/03 (2006.01) H04L 25/49 (2006.01)

Patent

CA 2217093

A blind equalization technique uses both the "constant modulus algorithm" (CMA) and the "multimodulus algorithm" (MMA) during blind start-up. This approach provides the basis for a "transition algorithm." One example of a transition algorithm is the CMA-MMA transition algorithm in which an adaptive filter simply switches from CMA to MMA. Other examples are variations of the CMA-MMA transition algorithm and are illustrated by the "Constant Rotation CMA-MMA" transition algorithm and the "Dynamic Rotation CMA-MMA" transition algorithm.

Technique d'égalisation aveugle utilisant à la fois l'« algorithme à modulo constant » (CMA) et l'« algorithme multimodulo » (MMA) lors du démarrage aveugle. Cette approche constitue la base d'un « algorithme de transition », dont un exemple est l'algorithme de transition CMA-MMA, dans lequel un filtre adaptatif permet de passer simplement du CMA au MMA. On peut aussi citer des variations de ce dernier algorithme, soit l'algorithme de transition « CMA-MMA à rotation constante » et l'algorithme de transition « CMA-MMA à rotation dynamique ».

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