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:
Oct. 01, 2002
Filed:
Dec. 17, 1999
Fabien Buda, Paris, FR;
Juing Fang, Vincennes, FR;
Alcatel, Paris, FR;
Abstract
A method of soft input to soft output decoding of a word of a block linear code of dimension k and length n received from a transmission channel is provided, including generating a list of firm words ( ) of the code close to the received code word ( ) by coding a list of k-tuplets obtained by firmly approximating components of the received word and changing the least likely components, and calculating the j component of the output soft word as the difference between the metrics of the closest generated code word and the closest generated code word having an opposite j component, or, failing this, the farthest generated code word. Also provided is a method of iterative decoding of a product code word received on a transmission channel using the soft input to soft output decoding method. It rapidly and efficiently decodes product code words without an algebraic decoder.