H - Electricity – 03 – L
Patent
H - Electricity
03
L
H03L 5/02 (2006.01) H04B 1/04 (2006.01)
Patent
CA 2745072
The present invention provides a technique for reducing the peak power of a combined signal that has a first signal of a first modulation type and a second signal of a second modulation type. Based on the combined signal, peak reduction distortion is determined. The peak reduction distortion is configured such that, if applied to the entirety of the combined signal, excessive peaks throughout the combined signal would be reduced. However, instead of applying the entirety of the peak reduction distortion, a selected portion of the peak reduction distortion is applied to a corresponding portion of the combined signal to reduce the peak power of the combined signal.
L'invention concerne une technique pour réduire la puissance de crête d'un signal combiné qui comprend un premier signal d'un premier type de modulation et un second signal d'un second type de modulation. En fonction du signal combiné, on détermine une distorsion de réduction de crête. La distorsion de réduction de crête est configurée de sorte que, lorsqu'on l'applique à la totalité du signal combiné, les crêtes excessives dans le signal combiné seront réduites. Toutefois, au lieu d'appliquer la totalité de la distorsion de réduction de crête, on applique une partie sélectionnée de cette dernière à une partie correspondante du signal combiné pour réduire la puissance de crête d'un signal combiné.
Fuller Arthur Thomas Gerald
Morris Bradley John
Borden Ladner Gervais Llp
Nortel Networks Limited
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