A kind of interweaving method and device

An interleaver and bit technology, applied in the field of communication, can solve the problems of increasing the complexity of the implementation process, the inability of the Polar code interleaving design and rate matching to be well combined, etc., to achieve the effect of randomization, reduction of complexity, and convenience of implementation.

Active Publication Date: 2020-08-25
HUAWEI TECH CO LTD
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  • Claims
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Problems solved by technology

[0004] At present, the interleaving design and rate matching of Polar codes cannot be well combined
In order to facilitate rate matching, an interleaving operation is performed in the rate matching module. In order to realize the randomization of coded bits, an interleaving module is added after the rate matching module to perform an interleaving operation, which increases the complexity of the implementation process.

Method used

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  • A kind of interweaving method and device
  • A kind of interweaving method and device
  • A kind of interweaving method and device

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Embodiment Construction

[0058] Embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

[0059] The embodiment of the present application provides an interleaving method and device, which writes the bit sequence to be interleaved into the interleaver, reads M bits according to the target code length M after rate matching, and performs part of the subsequence during the reading process. Reading in reverse order can form an interleaving effect. In this way, through a simple interleaver design, the second interleaving operation is omitted compared with the existing technology, which greatly reduces the complexity of implementation. Not only the speed The purpose of combining matching and interleaving is to facilitate the realization of rate matching and also help to realize the randomization of coded bits.

[0060] To facilitate the understanding of the embodiments of the present application, a brief introduction to the Polar code is given ...

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Abstract

The present application relates to the field of communication technology, and discloses an interleaving method and device, which are used to reduce the complexity of implementing Polar code interleaving and rate matching. The method is as follows: obtain the coded bits encoded by the Polar code, sort the coded bits according to the priority order of performing the rate matching operation, and obtain a first bit sequence, and the first bit sequence includes j subsequences, and j is positive integer, write the first bit sequence into the interleaver of row i and column j, wherein the bit in one column in the interleaver contains one subsequence in the j subsequences, and from the interleaver The bits are read out column by column until M bits are read, wherein at least two adjacent columns read in opposite directions, and M is the target code length.

Description

technical field [0001] The embodiments of the present application relate to the field of communication technologies, and in particular, to an interleaving 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. At present, the formulation of 5G standards has been in full swing, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
CPCH04L1/0057H04L1/0067H04L1/0071H04L1/00H03M13/271H03M13/13H03M13/6362H03M13/618H03M13/2707
Inventor 陈莹张公正罗禾佳乔云飞李榕
Owner HUAWEI TECH CO LTD
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