Reception of tdma digital data signal with compensation for...

H - Electricity – 04 – J

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H04J 3/04 (2006.01) H04L 25/02 (2006.01) H04L 27/01 (2006.01)

Patent

CA 2077104

When time-division multiplexed digital data signals are to be demodulated, symbols in a time slot and symbols in the next time slot are stored in memory. The digital data signal in each time slot includes a training sequence. Channel estimators extract channel information regarding stored signals from the signals themselves as well as from the training sequences in succeeding time slots and output the channel information to a channel information generator which combines the channel information from the channel estimators into channel information regarding the signal in the time slot. A demodulator receives the combined channel information and the stored signals and demodulates the signal in the time slot.

Quand des signaux de données numériques à multiplexage temporel doivent être démodulés, des symboles faisant partie de deux fenêtres de temps consécutives sont stockées dans une mémoire. Dans chacune de ces fenêtres de temps, les signaux comprennent une séquence d'apprentissage. Des estimateurs de voie extraient des informations sur les signaux stockés des signaux eux-mêmes, ainsi que des séquences d'apprentissage des fenêtres de temps successives, et transmettent ces informations à un générateur d'informations qui combine les informations ainsi reçues sur des signaux incorporés aux tranches de temps. Un démodulateur reçoit ces informations combinées ainsi que les signaux stockés et démodule le signale incorporé à la fenêtre de temps.

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