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:
Oct. 02, 2007
Filed:
Aug. 09, 2000
Stephen P. Pope, Berkeley, CA (US);
Aki Shohara, Sunnyvale, CA (US);
Yuo Chen, Fremont, CA (US);
Bryan Chase, Sunnyvale, CA (US);
Stephen P. Pope, Berkeley, CA (US);
Aki Shohara, Sunnyvale, CA (US);
Yuo Chen, Fremont, CA (US);
Bryan Chase, Sunnyvale, CA (US);
Broadcom Corporation, Irvine, CA (US);
Abstract
An improved method and apparatus for Viterbi Algorithm calculations for maximum likelihood sequence estimators in communication receivers is disclosed. The calculations for the maximum likelihood sequence estimator, in accordance with the invention, utilizes a variant of the Viterbi algorithm developed by Ungerboeck in which the associated branch metric calculations for the trellis require the computation of a set of branch metric parameters. An embodiment of the present invention provides for an improved recursive method and apparatus for calculation of the branch metric parameters that reduces the number of processor clock cycles required per state metric calculation. This enables real time computation of the branch metric parameters during execution of the Viterbi Algorithm.