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Self-adaptive continuous erasure decoding method and architecture based on polarization code

An adaptive and polar code technology, applied in error detection coding, using linear codes for error correction/detection, using block codes for error correction/detection, etc., can solve problems such as ineffective effects, achieve rich flexibility, Reduce hardware cost and good compatibility

Inactive Publication Date: 2017-05-10
SOUTHEAST UNIV
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Problems solved by technology

In the case of low signal-to-noise ratio, the decoder will terminate before reaching the maximum code length, which can reduce the complexity, but the effect is not obvious in the case of low signal-to-noise ratio

Method used

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  • Self-adaptive continuous erasure decoding method and architecture based on polarization code
  • Self-adaptive continuous erasure decoding method and architecture based on polarization code
  • Self-adaptive continuous erasure decoding method and architecture based on polarization code

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Embodiment Construction

[0036] The technical solution of the present invention will be further introduced below in conjunction with the accompanying drawings and specific embodiments.

[0037] This specific embodiment discloses an adaptive continuous elimination decoding method based on polar codes. When the signal-to-noise ratio is less than a specific threshold, an SCA-SCL decoder is selected, otherwise an adaptive SCL decoder is selected; when the list length is greater than When the threshold is specified, the decoder conversion is performed, and the specific steps are as follows:

[0038] S1: Initialization: set the initial path list to 0, and set all storage matrices to 0;

[0039]S2: Expansion: At the i-th level of the information code binary tree, if i is a frozen bit, the decoding path is set to 0; if i is an information bit, the decoding matrix Fill with 0 or 1 according to formula (1):

[0040]

[0041]

[0042] In formula (2), represents the channel transition probability, is...

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Abstract

The invention discloses a self-adaptive continuous erasure decoding method and architecture based on a polarization code. The method comprises the following steps: selecting a SCA-SCL decoder when a signal to noise ratio (SNR) is less than a specific threshold value, or selecting an adaptive SCL decoder; and performing the decoder conversion by use of a switching mechanism when a list length is greater than the specific threshold value. By use of the method disclosed by the invention, the optimal condition of two decoder working modes is selected, and the existing combined logic circuit architecture is not greatly changed, so that the architecture is universal and general, popular and easy to understand; not only is the performance of the decoder improved, but also is the complexity of the decoder lowered.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to an adaptive continuous erasure decoding method and architecture based on polar codes. Background technique [0002] In order to improve the reliability of communication system transmission, channel coding came into being. Coding theory was founded in 1948 as a technique to overcome interference and noise in the channel and achieve efficient and reliable communication. The channel coding theorem is a theorem that clarifies that there is a coding that makes the transmission rate approach the channel capacity. The theorem points out that if the channel capacity is C, the information rate to be transmitted is R, and if R is greater than C, there is no coding method that can realize the above signaling. With the further development and needs of the first generation of mobile communication technology, the most urgent problem is how to choose a new channel coding scheme to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/13
CPCH03M13/13H03M13/09
Inventor 张川宋文清尤肖虎
Owner SOUTHEAST UNIV
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