The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 16, 2003
Filed:
Jun. 19, 2000
Wen Tong, Ottawa, CA;
Stephan Gosne, Issy les Moulineaux, FR;
Catherine Leretaille (formerly Gauthier), Paris, FR;
Frederic Gabin, Bagnolet, FR;
Nortel Networks Limited, St. Laurent, CA;
Abstract
In a turbo coder, rate conversion and/or rate matching is achieved by deleting parity bits P and P from the outputs of two constituent coders, one supplied with data bits to be coded and the other supplied with the same data bits after interleaving. Deleted bits are determined by a rate matching control unit directly for the P bits and via a similar position interleaving step for the P bits. A similar rate matching arrangement is provided for only two of the three outputs of a rate convolutional coder, the third output corresponding to a strongest coding polynomial in terms of minimum free distance and none of its coded data bits being deleted.