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:
Dec. 03, 2013
Filed:
May. 27, 2009
Aleksandar Purkovic, Potomac, MD (US);
Brian Francis Johnson, Kensington, MD (US);
Slobodan Jovanovic, Bethesda, MD (US);
Steven Alan Tretter, Silver Spring, MD (US);
Aleksandar Purkovic, Potomac, MD (US);
Brian Francis Johnson, Kensington, MD (US);
Slobodan Jovanovic, Bethesda, MD (US);
Steven Alan Tretter, Silver Spring, MD (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A decoding circuit, is provided, comprising: a turbo decoder configured to receive a input systematic bit soft information values and input parity bit information values, and to generate output systematic bit soft information values and hard decoded bits according to a turbo decoding operation; and a parity bit soft information generation circuit configured to receive the input systematic bit soft information values, the input parity bit soft information values, and the output systematic bit soft information values; to determine initial forward metrics, initial backward metrics, and branch metrics as a function of the input parity bit soft information values and the output systematic bit soft information values; to determine output parity bit soft information values based on the branch metrics, the initial forward metrics, and the initial backward metrics; and to provide the output parity bit soft information values as a signal output.