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Rate matching and de-rate matching method and equipment of polar code

A technology of de-rate matching and rate matching, which is applied in the field of encoding and decoding, and can solve the problem of low decoding performance

Active Publication Date: 2020-10-27
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current rate matching scheme for polar codes has the problem of low decoding performance. Therefore, it is urgent to provide a rate matching method to improve decoding performance

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  • Rate matching and de-rate matching method and equipment of polar code
  • Rate matching and de-rate matching method and equipment of polar code
  • Rate matching and de-rate matching method and equipment of polar code

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Embodiment Construction

[0093] The network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application. For the evolution of architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0094]The embodiments of the present application can be applied to wireless communication systems. It should be noted that the wireless communication systems mentioned in the embodiments of the present application include but are not limited to: Narrow Band-Internet of Things (NB-IoT), Global Mobile Communication system (Global System for Mobile Communications, GSM), enhanced data rate for GSM Evolution system (Enhanced Data rate for GSM Evolution, ED...

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Abstract

Provided by the embodiments of the present application are a method and device for rate matching and de-rate matching a polar code, the method comprising: acquiring a sequence to be coded of which the length is N according to a coding constraint relationship, and performing polarization coding on the sequence to be coded so as to obtain a coded sequence, the coding constraint relationship being used to indicate at least two constraint positions in the sequence to be coded, and bits located at the at least two constraint positions having the same value; obtaining, according to matching positions in a rate matching pattern and the coded sequence, a rate matching sequence of which the length is M, wherein the rate matching pattern comprises a plurality of consecutive matching positions, and coded bits corresponding to the matching positions in the coded sequence are 0, N and M being integers, and M being less than N; and sending the rate matching sequence to a receiving device. The embodiments of the present application may improve decoding performance.

Description

technical field [0001] The embodiments of the present application relate to the field of coding and decoding technologies, and in particular, to a method and device for rate matching and de-rate matching of polar codes. Background technique [0002] Communication systems usually use channel coding to improve the reliability of data transmission and ensure the quality of communication. Polar codes proposed by Turkish professor Arikan are the first good codes that can theoretically reach Shannon capacity and have low encoding and decoding complexity. Therefore, Polar codes have great development and application prospects in 5G, and are in the third generation partnership project (the 3 rd Generation Partner Project, 3GPP) Radio Access Network (Radio Access Network, RAN1) 87th meeting was accepted for control channel coding. [0003] In the specific implementation process, the code length of the original Polar code (mother code) is an integer power of 2. In practical applica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
CPCH04L1/0058H04L1/0067H04L1/00
Inventor 牛凯朴瑨楠戴金晟董超王桂杰
Owner HUAWEI TECH CO LTD