Patent · US Active

Soft-input soft-output decoding of block codes

US11184035B2 · kind B2 · utility

0Cited by

1References

20Claims

0Family size

Assignee

Cisco Technology, Inc. · US

Inventors

Mohammad Ali Sedaghat · Erlangen, DE
Andreas Bisplinghoff · Forchheim, DE
Glenn Elliot Cooper · San Jose, US

Key dates

Filing date	Mar 11, 2020
Grant date	Nov 23, 2021
Priority date	—
Expiry date	Mar 11, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH03M13/6502
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A decoder decodes a soft information input vector represented by an input vector that is binary and that is constructed from the soft information input vector. The decoder stores even parity error vectors that are binary and odd parity error vectors that are binary for L least reliable bits (LRBs) of the input vector. The decoder computes a parity check of the input vector, and selects as error vectors either the even parity error vectors or the odd parity error vectors based at least in part on the parity check. The decoder hard decodes test vectors, representing respective sums of the input vector and respective ones of the error vectors, based on the L LRBs, to produce codewords that are binary for corresponding ones of the test vectors, and metrics associated with the codewords. The decoder updates the soft information input vector based on the codewords and the metrics.

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