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:
Nov. 15, 2005
Filed:
Dec. 31, 2002
Young-seo Park, Sunrise, FL (US);
Young-Seo Park, Sunrise, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A method and device for adaptive quantization of soft bits includes numerically sorting soft bits of an external data block having a log likelihood ratio distribution of the soft bits, each of the soft bits having a value, the sorted soft bits having extreme values, determining two point values in the log likelihood ratio distribution of the data block respectively located at a clipping distance away from each extreme value of the sorted soft bits, defining an adapted quantization range with a half-length equal to half of a difference between the two point values or with a half-length equal to a larger of two absolute values of the two point values, and placing each of the soft bits within a respective sub-range of the adapted quantization range. An adapted quantization range is determined whenever the log likelihood ratio distribution of the data block changes.