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Methods and devices for generating optimized coded modulations

A coding and modulation scheme, technology of modulation scheme, applied in the field of constructing non-binary error correction codes for coding and modulation, which can solve problems such as data distortion

Active Publication Date: 2018-04-17
UNIVERSITY OF SOUTHERN BRITTANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Noise and / or interference of any kind often cause distortion of data in storage and transmission systems

Method used

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  • Methods and devices for generating optimized coded modulations
  • Methods and devices for generating optimized coded modulations
  • Methods and devices for generating optimized coded modulations

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Embodiment Construction

[0050] Embodiments of the present invention provide apparatus, methods and computer program products for constructing coded modulation schemes comprising error correction codes and modulation maps jointly optimized to provide better decoding error performance. In particular, various embodiments provide for improved co-construction of non-binary error checking codes and modulation maps for higher order coded modulations.

[0051] Various embodiments provide coded modulation schemes to be used to code and modulate digital data sequences. The provided coded modulation schemes can be implemented in devices and systems configured to convert sequences of digital data into coded modulation symbols.

[0052] Coded modulation can improve system spectral efficiency and provide immunity to impairments in transmission and storage systems. In particular, the association of non-binary error-correcting codes and higher-order modulations provides higher data throughput and higher spectrally ...

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Abstract

Embodiments of the invention provide a device for determining a coded modulation scheme, said coded modulation scheme being defined by at least one non-binary error correcting code containing at leastone non-binary parity-check equation, a modulation scheme, and a modulation mapping, wherein the device comprises: - a calculation unit (31) configured to determine one or more candidate modulation mappings and one or more candidate parity-check equations defining said at least one non-binary error correcting code, each set of a candidate modulation mapping and at least one candidate parity-checkequation providing codeword vectors and being associated with one or more metrics, each metric being defined by a number of distinct pairs of codeword vectors having an Euclidean distance of a defined value; and - a selection unit (35) configured to select one candidate modulation mapping and at least one candidate parity-check equation according to an optimization criterion applied to said one or more metrics.

Description

technical field [0001] The present invention relates generally to digital communications and more particularly to methods and apparatus for constructing non-binary error correcting codes for coded modulation. Background technique [0002] Noise and / or interference of any kind often cause distortion of data in storage and transmission systems. [0003] Error correcting codes handle reliable transmission and / or storage of data by incorporating some redundant information in the original data. This redundancy makes it possible to recover the original information or at least to detect the presence of errors, even if errors occur up to a certain permissible level. [0004] Error correcting codes are implemented in several digital communication devices and systems for compensating for errors and for providing error resistant transfer of digital data during storage and transmission of digital data. [0005] Exemplary devices that implement error correcting codes include computers,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00
CPCH04L1/0003H04L1/0033H04L1/0036H04L1/0056H03M13/255H03M13/353H03M13/1171H04L1/0061H04L27/12H04L27/20H03M13/116H03M13/616H04L1/0041H04L1/0045
Inventor E·布蒂永A·阿布德穆勒
Owner UNIVERSITY OF SOUTHERN BRITTANY