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:
Feb. 09, 2010
Filed:
Aug. 06, 2001
Applicants:
Stephen J. Plante, Stoughton, MA (US);
Zvi Greenfield, Ksirsava, IL;
Inventors:
Stephen J. Plante, Stoughton, MA (US);
Zvi Greenfield, Ksirsava, IL;
Assignee:
Analog Devices, Inc., Norwood, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 13/03 (2006.01);
U.S. Cl.
CPC ...
Abstract
A digital signal processor performs turbo and Virterbi channel decoding in wireless systems. The computation block of the digital signal processor is provided with an accelerator for executing instructions associated with trellis computations. An ACS instruction performs trellis computations of alpha and beta metrics. Multiple butterfly calculations can be performed in response to a single instruction. A TMAX instruction is used to calculate the log likelihood ratio of the trellis.