Polar code encoding method and polar code serial offset decoding method and circuit based on frozen bit pairs

A technology for freezing bits and coding methods, which is applied in the field of coding and serial cancellation decoding methods and circuits of polar codes for mobile communication channel coding, and can solve the problems of inflexible decoding methods, reduced code rate, and reduced information transmission efficiency, etc. question

Active Publication Date: 2019-07-16
HEFEI UNIV OF TECH
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Problems solved by technology

However, their decoding methods are still not flexible enough, especially when the code length is long
The specific problems are as follows: (1) Setting too many frozen bits leads to a decrease in the code rate, thereby re

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  • Polar code encoding method and polar code serial offset decoding method and circuit based on frozen bit pairs
  • Polar code encoding method and polar code serial offset decoding method and circuit based on frozen bit pairs
  • Polar code encoding method and polar code serial offset decoding method and circuit based on frozen bit pairs

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Embodiment Construction

[0058] In this embodiment, a polar code encoding method based on frozen bit pairs, the entire encoding process can be mainly divided into channel polarization, sub-interval division, sub-interval evaluation, information bit preset value, frozen bit pair setting, bit mixing and matrix operations such as figure 1 Shown; In order to describe the concrete method conveniently, the desirable code length N=8 illustrates for example, and this encoding method can be expanded to arbitrary code length and actual design requirement, and carry out as follows:

[0059] Step 1, definition: when the sequence numbers of two adjacent subchannels sending frozen bits meet the relationship of 2β and 2β+1, the adjacent two bits are frozen bit pairs; β is a natural number, and β≤(N-2 ) / 2. Such as figure 2 shown, {u 0 , u 1}, {u 2 , u 3}, {u 4 , u 5} and {u 6 , u 7} all satisfy the relationship of 2β and 2β+1.

[0060] When the sequence numbers of multiple adjacent subchannels sending fro...

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Abstract

The invention discloses a polar code encoding method based on frozen bit pairs and a polar code serial offset decoding method and circuit. The whole encoding process can be mainly divided into channelpolarization, sub-interval division, sub-interval evaluation, information bit preset values, frozen bit pair setting, bit mixing and matrix operation. The decoding circuit comprises an initial likelihood value preprocessing module, a control state module, a partial sum item calculation module and an MPE calculation network module. The decoder further reduces the decoding delay, improves the datathroughput rate, reduces the consumption of hardware resources, and improves the overall performance of the decoder.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a coding and serial cancellation decoding method and circuit of mobile communication channel coding polar codes. Background technique [0002] Since the 1980s, the rapid development of wireless communication technology has enabled human society to embark on a new path in the information age. At present, the fourth-generation mobile communication technology (4G) has been maturely used. Compared with the previous three generations of mobile communication technology, the information transmission rate and transmission quality have been greatly improved. However, in order to meet higher application requirements, such as unmanned driving, For telemedicine and artificial intelligence technology, etc., the pursuit of high speed, high spectral efficiency and low power consumption is an inevitable choice. Therefore, the fifth-generation mobile communication tech...

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Application Information

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IPC IPC(8): H04L1/00H03M13/13
CPCH03M13/13H04L1/0043H04L1/0052H04L1/0057
Inventor 杜高明林青杨振文张多利王晓蕾宋宇鲲
Owner HEFEI UNIV OF TECH
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