Communicating data using wideband communications

H - Electricity – 04 – L

Patent

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Details

H04L 27/28 (2006.01) H04L 1/00 (2006.01) H04L 7/00 (2006.01) H04L 25/03 (2006.01) H04L 1/16 (2006.01) H04L 1/18 (2006.01) H04L 27/26 (2006.01)

Patent

CA 2496402

This disclosure relates to varying load and modulation applied to each of multiple frequency subchannels based on anticipated attenuation experienced by those subchannels. Communicating data includes identifying a static component of a transmission medium for wideband communications having at least two subchannels (110), determining a function of noise or attenuation versus frequency for the static component (120), selecting wideband modulation schemes for the subchannels based on the function determined (130, 140), and communicating a data signal over the subchannels (145). Independent demodulation functions may be applied to at least two of the subchannels.

L'invention concerne des variations de charge et de modulation appliquées à chacun des sous-canaux de fréquences multiples reposant sur une atténuation attendue à laquelle sont soumis ces sous-canaux. Communiquer des données consiste alors à identifier un composant statique d'un support d'émission de communications en large bande comportant au moins deux sous-canaux, à déterminer une fonction bruit, ou d'atténuation, en fonction de la fréquence pour ce composant statique, à choisir, pour ces sous-canaux, des schémas de modulation à large bande reposant sur la fonction déterminée, et à communiquer un signal de données sur ces sous-canaux. Il est possible d'appliquer des fonctions indépendantes de démodulation à au moins deux des sous-canaux.

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