A Construction Method of Partially Polarized Polar Codes

A construction method and polarization technology, applied in the field of communication, can solve problems such as difficult control, and achieve the effect of saving XOR gates and increasing the encoding rate

Active Publication Date: 2019-10-18
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

For the problem of how to control excessive polarization, reference 1 uses setting the Bhattacharyya parameter threshold to control the degree of polarization, but this is constrained by channel changes, and any layer of the corresponding decoder may need to be adjusted, which is not easy to control

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  • A Construction Method of Partially Polarized Polar Codes
  • A Construction Method of Partially Polarized Polar Codes
  • A Construction Method of Partially Polarized Polar Codes

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Embodiment Construction

[0034] The present invention will be further described below with reference to the drawings and specific embodiments.

[0035] figure 1 Is the polarization matrix of polar code with code length N, F i,j Represents the polarization unit matrix i, j represent unit position index; figure 2 It is the polarization matrix of the polar code with N=16 originally without column interchange interleaving. The left edge of the figure is the channel row index number, and the upper edge is the column number.

[0036] The following describes the construction method of a partially polarized polar code according to the present invention according to the specific implementation steps:

[0037] Step 1: Determine the code length N and code rate R of the required finite-length polar code, and determine the subchannel set where the information bits are located according to the channel conditions And the set of subchannels where the frozen bit is located

[0038] Select polarized nucleus Log after Kroc...

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Abstract

The invention provides a construction method of partially polarized polar code, which belongs to communication technology field. The method cancels regularly unneeded polarization operation in polarization process of traditional polar code and deletes 1 that needn't participate in polarization operation in the original polarization matrix, which cancels polarization operation caused by raw information Bit in coding procedure. The generated polarization matrix after deleting 1 regularly is provided. On the one hand, partially polarized polar code generated by the method can improve error-correcting performance of finite length polar codes, and simplify polarization operation structure of polar code and reduce code-decode complexity of polar code; on the other hand, the polar code still can be proved to reach the channel capacity at infinity. A simulation result shows that the polar code has better BER performance than the traditional polar code.

Description

Technical field [0001] The invention belongs to the field of communication technology, and specifically relates to a method for constructing a partially polarized polar code. Background technique [0002] In 2009, Arikan announced the polar code channel coding theory to the world, and for the first time proved that polar code is the only error correction coding scheme that can theoretically reach the channel capacity. It has low coding and decoding complexity, flexible and simple, and extremely Easy to operate. During the period from November 14 to 18, 2016, at the 3GPP RAN1#87 meeting held in Reno, the United States, the polar code was clearly specified as a short code scheme for 5G channel coding applications. [0003] As is well known in the art, the traditional polar code channel coding completes the channel error correction coding process through the polarization matrix. However, the traditional channel polarization theory does not differentiate between the polarization of e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M13/13
Inventor 刘荣科靳洪旭王闰昕赵岭
Owner BEIHANG UNIV
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