H - Electricity – 03 – M
Patent
H - Electricity
03
M
H03M 13/27 (2006.01) H03M 13/29 (2006.01)
Patent
CA 2347237
The present invention is a novel and improved technique for performing coding with particular application to turbo, or iterative, coding techniques. In accordance with one embodiment of the invention, interleaving is performed by generating the address of a memory using a PN state generator. Data is written into a memory (26) in sequential order, and then read out using addresses specified by the PN state generator. To deinterleave, the interleaved data is written into a memory (16) using addresse specified by the PN state generator. To de interleave, the interleaved data is written into a memory (26) using addresses specified by the PN state generator, and then read out in sequential order. A set of PN state generators that provide excellent coding performance is provided.
La présente invention concerne un nouveau procédé de codage innovant, qui convient particulièrement pour des techniques de turbo-codage ou de codage itératif. Selon un mode de réalisation de l'invention, on effectue une imbrication en générant l'adresse d'une mémoire au moyen d'un générateur d'états pseudo-aléatoire. Des données sont inscrites dans une mémoire (26) dans un ordre séquentiel. Ces données sont lues au moyen des adresses établies par le générateur d'états pseudo-aléatoire, puis lues dans un ordre séquentiel. L'invention concerne en outre un ensemble de générateurs d'états pseudo-aléatoires offrant une excellente performance de codage.
Ling Fuyun
Sindhushayana Nagabhushana T.
Stein Jeremy
Vijayan Rajiv
Qualcomm Incorporated
Smart & Biggar
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