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:
Aug. 10, 2004
Filed:
May. 01, 2000
Hidehiko Norimatsu, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A method of updating a reference value in a high speed closed loop based on a likelihood is disclosed. When a path with a smallest accumulated value of Hamming distances from a received sequence is determined as a decoded sequence out of respective paths on a trellis diagram in a Viterbi algorithm, a likelihood which is an accumulated value of Hamming distances between a decoded sequence and a received sequence for a certain period of time is detected. When the likelihood is equal to or lower than a threshold value, update is immediately performed to increase a reference Eb/IO. When the likelihood is higher than the threshold value, an average value of the likelihood for detection over N times is derived. When the average value is lower than L, the reference value is increased. When the average value is higher than M, the reference value is reduced. Otherwise, the reference value is not changed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile