Patent · US Active

LDPC decoder with fractional unsatisfied check quality metric

US8930788B2 · kind B2 · utility

5Cited by

4References

20Claims

0Family size

Assignee

LSI · US

Inventors

Fan Zhang · Lake Barrington, US
Ming Jin · Fremont, US
Wu Chang · Santa Clara, US
Haitao Xia · San Jose, US

Key dates

Filing date	Sep 4, 2012
Grant date	Jan 6, 2015
Priority date	—
Expiry date	Dec 15, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH03M13/1117
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

An apparatus includes a low density parity check decoder operable to iteratively generate messages between a plurality of check nodes and variable nodes, and to calculate a fractional quality metric for a data block as it is decoded in the low density parity check decoder based at least in part on perceived values of data in the variable nodes. The fractional unsatisfied check quality metric is a probabilistic determination of a number of unsatisfied parity checks in the low density parity check decoder.

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