Patent · US Active

Forward error correction with turbo/non-turbo switching

US9647696B2 · kind B2 · utility

0Cited by

2References

27Claims

0Family size

Assignee

Cisco Technology, Inc. · US

Inventors

Andreas Bisplinghoff · Forchheim, DE
Stefan Langenbach · Achern, DE
Norbert Beck · Neuching, DE

Key dates

Filing date	May 5, 2015
Grant date	May 9, 2017
Priority date	—
Expiry date	May 13, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH04L1/0045
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A forward error correction and differentially encoded signal obtained via a communication channel is supplied to a soft-input soft-output (SISO) differential decoder that is bi-directionally coupled to a SISO forward error correction decoder. Over a first portion of a plurality of decoding iterations of the differentially encoded signal, the SISO differential decoder and the SISO forward error correction decoder are operated in a turbo decoding mode in which decoded messages generated by the SISO differential decoder are supplied to the SISO forward error correction decoder and forward error correction messages are supplied to the differential decoder. Over a second portion of the plurality of decoding iterations of the differentially encoded signal, the SISO forward error correction decoder is operated in a non-turbo decoding mode without any messages passing to and from the SISO differential decoder. Decoder output is obtained from the SISO forward error correction decoder.

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