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:
Jul. 16, 2013
Filed:
Oct. 09, 2009
Dominic Wong, Victoria, AU;
Dobrica Vasic, Victoria, AU;
Dominic Wong, Victoria, AU;
Dobrica Vasic, Victoria, AU;
NEC Corporation, Tokyo, JP;
Abstract
A decoding method decodes N received branchwords produced by a convolutional encoder using a tail-biting convolutional code. N received branchwords are in memory. Viterbi updates are performed on a sequence of branchwords. A first encoder determines a state at the end of the third block most likely to have generated the final branchword in the sequence from the best path metric. A Viterbi traceback procedure is performed from that first encoder state at the end of the third block to determine a second encoder state at the start of the third block of branchwords. A Viterbi traceback procedure is performed from that second encoder state at the start of the third block to determine a third encoder state at the start of the second block of branchwords. A derived tail-biting path is output, if the second and third encoder states are identical.