Code-rate increased compressed mode ds-cdma systems and methods

Details Code-rate increased compressed mode ds-cdma systems and methods Code-rate increased compressed mode ds-cdma systems and methods

H - Electricity

04

B

H04B 7/216 (2006.01) H04B 7/26 (2006.01) H04L 1/00 (2006.01) H04B 1/69 (2006.01) H04Q 7/22 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2252419

Introduction of discontinuous transmission in CDMA communications techniques is achieved by using selectively puncturing coded output of a convolutional encoder. By temporarily increasing the coding rate during a frame, information only fills an information part of a frame in a compressed mode, leaving an idle part of the frame in which to perform other functions, such as evaluation of other frequencies for use in handover between frequencies.

L'introduction d'émissions discontinues dans les techniques de télécommunications s'obtient par "perforation" sélective des signaux de sortie codés d'un codeur convolutionnel. En augmentant temporairement le rythme de codage pendant une trame, l'information ne remplit qu'une partie de la trame réservée à l'information en mode comprimé, ce qui laisse vacante une partie de la trame disponible pour d'autres fonctions telles que l'évaluation d'autres fréquences pour assurer des commutations entre fréquences.

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