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. 13, 2011
Filed:
Dec. 14, 2005
Stephen Bates, Edmonton, CA;
Christian Schlagel, Edmonton, CA;
Bruce Cockburn, Edmonton, CA;
Vincent Gaudet, Edmonton, CA;
Stephen Bates, Edmonton, CA;
Christian Schlagel, Edmonton, CA;
Bruce Cockburn, Edmonton, CA;
Vincent Gaudet, Edmonton, CA;
The Governors of the University of Alberta, Edmonton, Alberta, CA;
Abstract
Decoder for low-density parity check convolutional codes. In at least some embodiments, a decoder () for arbitrary length blocks of low-density, parity-check codes includes a plurality of interconnected processors (), which further include a plurality of interconnected nodes. A memory can be interconnected with the nodes to store intermediate log likelihood ratio (LLR) values based on channel LLR values. Thus, LLR values having successively improved accuracy relative to the channel LLR values can be output from each processor, and eventually used to decision information bits. In some embodiments, the memory is a random access memory (RAM) device that is adapted to store the intermediate LLR values in a circular buffer. Additionally, a storage device such as a read-only memory (ROM) device can be used to generate a predetermined plurality of addresses for reading and writing LLR values.