Patent · US Active

Method for encoding data message K' for transmission from sending station to receiving station as well as method for decoding, sending station, receiving station and software

US8112695B2 · kind B2 · utility

9Cited by

2References

12Claims

0Family size

Assignee

Nokia Siemens Networks GmbH & Co. KG · DE

Inventors

Elena Costa · Birkenfeld, DE
Egon Schulz · Birkenfeld, DE
Petr Trifonov · Saint Petersburg, RU

Key dates

Filing date	Apr 26, 2007
Grant date	Feb 7, 2012
Priority date	—
Expiry date	Feb 8, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH03M13/6516
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

Irregular LDPC codes have a construction which allows one to obtain a number of codes with different length from a single prototype code with a parity check matrix given by H=[Hz Hi], where Hz specifies the well-known zigzag pattern in the corresponding Tanner graph. The parity check matrices for longer codes are obtained as [Hz′Πdiag(Hi, . . . , Hi)], where Hz′ specifies a longer zigzag pattern depending on the number of matrices Hi used, and Π represents some permutation. This allows one to construct the decoder for a longer code by reusing hardware components developed for decoding the prototype code.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.