High speed syndrome-based FEC encoder and system using same

US7509564B2 · kind B2 · utility

Assignees

• Agere Systems Inc. · US
• Alcatel-Lucent USA Inc. · US

Inventors

• Ralf Dohmen · Nuremberg, DE
• Timo Frithjof Schuering · Nuremberg, DE
• Leilei Song · Sunnyvale, US
• Meng-Lin Yu · Morganville, US

Key dates

• Filing date: May 13, 2005
• Grant date: Mar 24, 2009
• Expiry date: Oct 30, 2025

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03M13/1515
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

A decoder, encoder and corresponding system are disclosed for providing fast Forward Error Correcting (FEC) decoding and encoding of syndrome-based error correcting codes. Three-parallel processing is performed by elements of the system. More particularly, in an illustrative embodiment, a decoder performs three-parallel syndrome generation and error determination and calculations, and an encoder performs three-parallel encoding. Low power and complexity techniques are used to save cost and power yet provide relatively high speed encoding and decoding.