HM4SC-based polar code adaptive SCL coding and decoding method

A coding method and polar code technology are applied in the field of HM4SC-based polar code adaptive SCL coding and decoding, which can solve the problems of inability to apply, large delay, and low computational complexity.

Active Publication Date: 2020-03-24
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[0003] E. Arikan also proposed an SC (Serial Cancellation) decoding algorithm for polar codes. The SC algorithm has low computational complexity, but has a large delay and a high bit error rate, which cannot be applied in actual scenarios.

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  • HM4SC-based polar code adaptive SCL coding and decoding method
  • HM4SC-based polar code adaptive SCL coding and decoding method
  • HM4SC-based polar code adaptive SCL coding and decoding method

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Embodiment

[0066] The invention belongs to the technical field of digital information transmission and relates to an auxiliary polar code decoding adaptive SCL encoding and decoding method.

[0067] A polar code adaptive SCL coding and decoding method based on HM4SC, such as figure 1 As shown, the encoding method of this method is:

[0068] S1: According to the classic construction method of polar codes, channel combination and channel splitting are performed on 2K sub-channels, the K sub-channels with the highest reliability are used to transmit message bits, and the remaining K sub-channels are set as fixed bits.

[0069] S2: Divide the K message bits into the first M-1 subsections and the last subsection with the same length, totaling M subsections. in Indicates the number of M-1 sub-segments, is the floor operator.

[0070] k is the number of bits in each sub-segment in the first M-1 sub-segments, and the number of bits in the last sub-segment is K-k(M-1). In the first M-1 sub...

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Abstract

The invention discloses an HM4SC-based polar code self-adaptive SCL coding and decoding method, which comprises a coding method and a decoding method, and is characterized in that verification is carried out after decoding of each sub-segment is finished, so that decoding errors can be detected earlier, path expansion retranslation can be executed earlier, and invalid calculation is reduced; and the CRC is added to the last sub-segment, so that the reliability of a decoding result is enhanced.

Description

technical field [0001] The invention relates to the technical field of digital information transmission, in particular to an HM4SC-based polar code adaptive SCL coding and decoding method. Background technique [0002] With the development of communication technology and the improvement of business requirements in practical applications, the fifth generation mobile communication technology (5G) puts forward higher requirements for channel coding technology. The polar code proposed by Turkish scientist E. Arikan is currently the only channel code that can be theoretically proven to reach the Shannon limit. Polar codes are highly structured, easy to design and implement, and at the same time have low encoding and decoding complexity and superior performance. Therefore, in 2016, the International Wireless Standardization Organization (3GPP) officially identified Huawei's polar code scheme as the short code standard for the 5G control channel. [0003] E. Arikan also proposed ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/13H03M13/09
CPCH03M13/13H03M13/09Y02D30/70
Inventor 王一歌关義轩韦岗
Owner SOUTH CHINA UNIV OF TECH
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