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. 25, 2008
Filed:
Feb. 08, 2006
Nikolai Nefedov, Thalwil, CH;
Nikolai Nefedov, Thalwil, CH;
Nokia Corporation, Espoo, FI;
Abstract
A channel coding method, apparatus and computer program product that provides efficient hybrid automatic repeat request (HARQ) comprising low complexity rate compatible zigzag codes, and by further applying data reshaping in combination with rate matching rules to substantially avoid sub-optimality due to puncturing, in combination with irregular parallel concatenation of zigzag (PCZZ) codes. Presently preferred rate matching rules comprise: (1) maintaining a PCZZ parameter ΔJ as small as possible; and (2) creating a code having the shortest rows; where a code with J=1 gives the lowest coding rate (mother code) with PCZZ parameters (K, 1, 3). Data reshaping shapes K information bits into a plurality of arrays by associating a parity bit with each row of an array. Each array of the plurality has a different number of rows as compared to each other array in order to match rates. Row length within an array may be allowed to vary ΔJ within constraints in order to exactly match a data rate.