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. 06, 2004
Filed:
Sep. 13, 2001
Inkyu Lee, Kearny, NJ (US);
Agere Systems Inc., Allentown, PA (US);
Abstract
A maximum a posteriori (MAP) detector/decoder employs an algorithm that computes log-likelihood value with an a posteriori probability (APP) value employing a number N of previous state sequences greater than or equal to two (N≧2). By defining the APP with more previous state sequences, the set of &agr; values may be calculated for a current state and then reduced. After generating the reduced set of &agr; values, the full set of &bgr; values may be generated for calculation of log-likelihood values. By calculating a set of &agr; values that may be decimated by, for example, N, the amount of memory required to store the &agr; values used in subsequent computations is reduced.