H - Electricity – 04 – J
Patent
H - Electricity
04
J
H04J 11/00 (2006.01) H04L 27/26 (2006.01)
Patent
CA 2316904
A coefficient signal for each sub-carrier is calculated by calculating an average of receiving powers of sub-carriers (A to D) in a control circuit (162) and by dividing the average by an envelope of each sub-carrier (A to D). A transmission signal of each sub-carrier (A to D) output from each of relative mapping circuits (102 to 105) is multiplied by a coefficient signal in each multiplier (106 to 109), whereby powers received at sub-carriers are approximately uniformed to improve error rate characteristics.
Selon cette invention, on calcule un signal de coefficient pour chaque sous-porteuse en calculant une moyenne des puissances de réception des sous-porteuses (de A à D) dans un circuit de commande (162) et en divisant la moyenne par une enveloppe de chaque sous-porteuse (de A à D). Un signal d'émission de la sortie de chaque sous-porteuse (de A à D) provenant des circuits de mappage respectifs (102 à 105) est multiplié par un signal de coefficient dans chaque multiplicateur (106 à 109), les puissances reçues au niveau des sous-porteuses étant à peu près uniformes afin d'améliorer les caractéristiques relatives au taux d'erreurs.
Ishikawa Kimihiko
Sudo Hiroaki
Matsushita Electric Industrial Co. Ltd.
Osler Hoskin & Harcourt Llp
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