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. 12, 1994
Filed:
Mar. 28, 1991
Applicant:
Inventors:
Assignee:
Alcatel Transmission par Faisceaux Hertziens A.T.F.H., Lavallois Perret Cedex, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; H03M / ;
U.S. Cl.
CPC ...
371 43 ; 371 46 ;
Abstract
A method and apparatus for sequential decoding using the stack algorithm. A stack is used which is small in size and which has a leaky bottom. A counter stores the total count of nodes observed so as to abandon decoding if this count exceeds a fixed value. A comparator continuously compares the metric at the top of the stack with the largest metric lost from the bottom of the stack as stored in a memory. A small memory stores the path scanned through the logic tree, thereby directly providing the decoded block.