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A decoding method and device

A decoding and equipment technology, applied in the field of encoding and decoding, can solve the problems of large decoding bits, computational complexity and high decoding delay

Active Publication Date: 2020-10-09
XFUSION DIGITAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In practical applications, the number of decoding bits is very large. Using the SCL decoding method, for each decoding bit, it is necessary to calculate the PM value of all paths under each decoding bit, and for all paths according to the PM value Perform a sort, its computational complexity and decoding delay due to sorting are very high

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Embodiment Construction

[0040] The present application provides a decoding method and device, which are used to reduce the computational complexity of decoding, and reduce the decoding time delay on the basis of ensuring decoding performance. Wherein, the method and the device are based on the same inventive concept, and since the principles of the method and the equipment to solve the problem are similar, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated.

[0041] In the following, some terms used in this application and the basic knowledge of Polar codes are explained, so as to facilitate the understanding of those skilled in the art.

[0042] 1) Polar code

[0043] The coding strategy of the Polar code uses a noise-free channel to transmit useful information for the user, and a full-noise channel to transmit agreed information or no information. Polar code is also a kind of linear block code, its coding matrix is ​​G N , the en...

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Abstract

The invention discloses a decoding method and device, which are used for reducing the calculation complexity of the decoding method and reducing the decoding time delay. The method comprises the following steps that: the decoding device extracts a first judgment bit with an optimal metric value from a decoding node queue, wherein the first judgment bit is a judgment bit of a first decoding node, the decoding node queue comprises one or more pieces of decoding node information, and the decoding node information comprises a corresponding relationship among the number of layers of decoding nodeson a decoding code tree, judgment bits of the decoding nodes and metric values; the decoding device performs judgment of a second decoding node based on the first judgment bit to obtain a judgment result of the second decoding node, and the number of layers of the second decoding node in a decoding code tree is located on the next layer of the number of layers of the first decoding node in the decoding code tree; and the decoding device updates the decoding node queue based on the judgment result of the second decoding node.

Description

technical field [0001] The embodiments of the present application relate to the technical field of coding and decoding, and in particular, to a decoding method and device. Background technique [0002] The rapid evolution of wireless communication indicates that the fifth generation (5G) communication system will present some new features in the future. The three most typical communication scenarios include enhanced mobile Internet (enhance mobilebroadband, eMBB), mass machine connection communication (massive machine type communication, mMTC) and ultra reliable low latency communication (ultra reliable low latency communication, URLLC), the requirements of these communication scenarios will pose new challenges to the existing long term evolution (LTE) technology. As the most basic wireless access technology, channel coding is one of the important research objects to meet the needs of 5G communication. Polar codes are selected as the control channel coding method in the 5G ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H03M13/13
CPCH03M13/13H04L1/005H04L1/0052H04L1/0054H04L1/0057H04L1/0061
Inventor 牛凯董超杨星
Owner XFUSION DIGITAL TECH CO LTD