Method and apparatus for adjusting Polar code, and encoding and decoding apparatus

An adjusted mother code technology, applied in the field of communication, can solve problems such as low complexity and unsatisfactory 5G communication

Active Publication Date: 2018-07-31
HUAWEI TECH CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

However, due to the characteristics of their own encoding and decoding, these two codes cannot meet the needs of 5G ...

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  • Method and apparatus for adjusting Polar code, and encoding and decoding apparatus
  • Method and apparatus for adjusting Polar code, and encoding and decoding apparatus
  • Method and apparatus for adjusting Polar code, and encoding and decoding apparatus

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Embodiment Construction

[0055] Polar code is a linear block code whose generator matrix is ​​G N , whose encoding process is in, is the vector to be encoded of the Polar code, which is a binary row vector, and its length is the code length N of the mother code. G N is an N×N matrix, and B N is an N×N transpose matrix. e.g. B N Can be a Bit Reversal matrix; defined as log 2 N matrix F 2 The Kronecker product of . The addition and multiplication operations mentioned above are all addition and multiplication operations on binary Galois Field. B N Will not affect the decoding performance, the present invention for the coding matrix is and Both apply.

[0056] During the encoding process of Polar code, Some of the bits are used to carry information, which are called information bits, and the other part of the bits are set to a fixed value pre-agreed by the transceiver end, which are called fixed bits. Usually, the polarization channel error probability corresponding to the bit of sequ...

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Abstract

The embodiment of the invention discloses a method and apparatus for adjusting a Polar code, and an encoding and decoding apparatus, and relates to the field of communication. A Polar code encoding and decoding method with lower computational complexity is achieved. The specific scheme is: obtaining the size K of an information block; determining the positions of K information bits and the positions of fixed bits according to the reliability ranking of N polar channels; if according to a sequence of polar channel sequence numbers corresponding to the information bits from small to large, the positions of the previous S information bits among the K information bits meet a preset condition, adjusting P-1 bit positions among previous S-1 information bits as the positions of the fixed bits, and adjusting the P-1 bit positions among the positions of the fixed bits as the positions of the information bits; and performing Polar code encoding or decoding on the information blocks according tothe adjusted information bit positions and the fixed bit positions. The method and apparatus disclosed by the embodiment of the invention are applied to Polar code encoding or decoding.

Description

technical field [0001] The embodiments of the present application relate to the communication field, and in particular, to a Polar code encoding and decoding method, device, and encoding and decoding device. Background technique [0002] The rapid evolution of wireless communication indicates that the future communication system will show more new features, and it also poses new challenges to the original communication technology. For example, the future fifth-generation mobile communication technology (5th-Generation, 5G) poses new challenges to the current long-term evolution (Long Term Evolution, LTE) technology. Channel coding, as the most basic wireless access technology, is an important research object for communication technologies of all ages to meet its needs. [0003] After the Shannon theory was proposed, the industry has been committed to finding a coding and decoding method that can reach the Shannon limit and have relatively low complexity. Turbo codes and Lo...

Claims

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Application Information

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IPC IPC(8): H04L1/00
CPCH04L1/0009H04L1/0057H04L1/0061H04L1/0064H03M13/13H04L1/00
Inventor 陈莹罗禾佳乔云飞李榕杜颖钢
Owner HUAWEI TECH CO LTD
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