Simplified, presorted, syndrome-based, extended min-sum (EMS) decoding of non-binary LDPC codes

A syndrome, pre-sorting technique, applied in coding, transcoding, coding elements, etc.

Pending Publication Date: 2020-04-10
UNIVERSITY OF SOUTHERN BRITTANY
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the calculation and ordering of syndromes introduces high complexity that increases with the number of messages processed by ch...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Simplified, presorted, syndrome-based, extended min-sum (EMS) decoding of non-binary LDPC codes
  • Simplified, presorted, syndrome-based, extended min-sum (EMS) decoding of non-binary LDPC codes
  • Simplified, presorted, syndrome-based, extended min-sum (EMS) decoding of non-binary LDPC codes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0071] Embodiments of the invention provide apparatus, methods and computer program products for decoding a signal encoded using at least one error correcting code with reduced computational complexity and reduced delay. In particular, they provide efficient pre-ordering techniques and check node processing architectures implemented in iterative decoders for decoding signals encoded with at least one non-binary error-correcting code.

[0072]Methods, devices and computer program products according to various embodiments can be implemented in several types of digital data transmission and storage devices and systems used in several types of applications. Exemplary devices and systems include computers, disks, laptops, phones, smartphones, recorders, base stations, drones, satellites, and the like. Exemplary applications include magnetic and optical recording, digital television and video broadcasting, digital communications, and the like.

[0073] For purposes of illustration ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

Low complexity architecture for syndrome-based check node, SB- CN, processing in Extended Min-Sum, EMS, decoders for Non-Binary LDPC, NB-LDPC, codes using the principle of pre-sorting the variable messages based on a reliability criteria. Embodiments of the invention provide a check node processing unit (25) configured to determine at least one check node message to decode a signal encoded using aNB-LDPC code, the check node processing unit comprising: a data link to one or more message presorting units (24) configured to determine permuted variable node messages by applying one or more permutations to at least three variable node messages generated by one or more variable node processing units (23); a syndrome calculation unit (26) configured to determine a set of syndromes from the at least three permuted variable node messages, a syndrome comprising binary values; a decorrelation and permutation unit (27) configured, for each check node message of a given index, to: determine a permuted index by applying to said given index the inverse of the one or more permutations; select at least one valid syndrome in the set of syndromes, a valid syndrome comprising a binary value associated with said permuted index equal to a given value; determine, at least one candidate check node component from said at least one valid syndrome; a selection unit (28) configured to determine at least one check node message from said at least one candidate check node component.

Description

technical field [0001] The present invention relates generally to digital communications, and in particular to methods and apparatus for decoding signals encoded using error correcting codes. Background technique [0002] Error correcting codes are implemented in various data processing systems and devices to ensure protection of data from errors introduced during data transmission or storage in the presence of noise and / or interference. Encoding involves adding redundant data to the original data, which enables detection and / or correction of errors. [0003] Error correcting codes are implemented in a large number of devices and systems, for example in data communication or storage applications. Exemplary applications include voice and multimedia transmission, e.g., in wireless ad hoc networks (e.g., standardized in Wi-Fi 802.11), in radio communication systems (e.g., in 3G, 4G / LTE, 5G and later, etc. in), in optical communication systems, and in digital video broadcastin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H03M13/11
CPCH03M13/1117H03M13/1171H03M13/1575
Inventor E·布蒂永C·马尔尚
Owner UNIVERSITY OF SOUTHERN BRITTANY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap