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Method and apparatus for rate matching of polar codes

A rate matching and polar code technology, applied in the field of communication, can solve the problems of poor HARQ performance and high frame error rate, and achieve the effects of reducing frame error rate, improving reliability, good versatility and practicability

Active Publication Date: 2019-06-21
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this prior art suffers from high frame error rate and poor HARQ performance

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  • Method and apparatus for rate matching of polar codes
  • Method and apparatus for rate matching of polar codes
  • Method and apparatus for rate matching of polar codes

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Embodiment Construction

[0041] Various embodiments are now described with reference to the drawings, wherein like elements are designated with like reference numerals. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that the described embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.

[0042]The terms "component", "module", "system" and the like are used in this specification to refer to a computer-related entity, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and / or a computer. By ...

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Abstract

A method for rate matching of polar codes is provided. The method includes: obtaining a congruent sequence according to the code length of the target polar code; and sorting the congruential sequence according to a preset rule to obtain a reference sequence; determine a mapping function based on the congruential sequence and the reference sequence; interleave the target polar code according to the mapping function to generate interleaved output bits. By determining the congruent sequence based on the code length of the polar code, and realizing the interleaving of the target polar code through the congruent sequence, the interleaved bit sequence structure can be made more uniform, the frame error rate can be reduced, and the HARQ performance can be improved. , thereby improving the reliability of communication, and can be applied to the polar code rate matching process for various code lengths, and has good versatility and practicability.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and more specifically, to a method and device for rate matching of polar codes. Background technique [0002] In communication systems, channel coding is usually used to improve the reliability of data transmission to ensure the quality of communication. Among them, polar code (Polar code) is a linear block code, which has been proved theoretically to be a coding method that can obtain Shannon capacity and has low encoding and decoding complexity. [0003] In order to improve communication performance, Hybrid Automatic Repeat Request (HARQ, Hybrid Automatic Repeat Request) technology can be used, and in order to match the carrying capacity of the physical channel, it is also necessary to perform rate matching on the Polar code, which determines the transmission rate of each HARQ retransmission bits. [0004] In the prior art, the Polar code adopts the traditional ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
CPCH03M13/13H04L1/0041H04L1/0067H03M13/635H04L1/0069H04L1/0057H03M13/2792H04L1/0071H04L1/1812
Inventor 沈晖李斌施玉晨
Owner HUAWEI TECH CO LTD