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Coding method, device and equipment

An encoding method and encoding technology, applied in the field of encoding and decoding, can solve the problems of long polar code length, low data encoding and decoding efficiency, poor data transmission security and reliability, etc.

Active Publication Date: 2021-02-12
HUAWEI TECH CO LTD
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Problems solved by technology

[0004] However, in the above process, due to two channel polarizations, the length of the polarized code is longer, resulting in low data encoding and decoding efficiency, and the unpolarized channels in the first stage are ignored in the second stage , leading to poor security and reliability of data transmission

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  • Coding method, device and equipment
  • Coding method, device and equipment
  • Coding method, device and equipment

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Embodiment Construction

[0077] figure 1 For the system architecture diagram provided for this application, please refer to figure 1 , including a sending end 11 , a first receiving end 12 and a second receiving end 13 . Optionally, the sending end 11, the first receiving end 12, and the second receiving end 13 may be any terminal equipment, for example, the terminal equipment may be a mobile phone, a computer, a network equipment, and the like.

[0078] In the actual communication process, the sending end 11 encodes the secret information M and the auxiliary information M′ to obtain the N-dimensional code word X [N] , send the N-dimensional codeword X at the sending end [N] After that, the N-dimensional codeword X [N] It is transmitted to the legal first receiving end 12 through the main channel, and is transmitted to the illegal (tapping) second receiving end 13 through the wiretapping channel. Among them, the N-dimensional code word X [N] After the transmission of the main channel, the code wo...

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Abstract

The present application provides a coding method, device and equipment, the method includes: determining the Bhattacharyian parameters of the polarized channel, the polarized channel includes the polarized main channel and the polarized wiretapping channel; according to the Bhattacharyian parameters of the polarized main channel, Determining the first set of channels whose Bhattacharyachian parameter is less than the first threshold in the polarized main channel, and determining the second set of channels whose Bhattacharyachian parameter is greater than the second threshold in the polarized eavesdropping channel according to the Bhattacharyian parameter of the polarized eavesdropping channel, the first The first threshold and the second threshold are respectively determined according to the mother code length of the information to be encoded; according to the first channel set and the second channel set, the first channel subset corresponding to the subchannel of the information bit and the corresponding subchannel of the fixed bit are determined. The second channel subset and the third channel subset corresponding to the random bit sub-channel; encode the information to be encoded according to the first sub-channel set, the second sub-channel set and the third sub-channel set. It is used to improve the security and reliability of data transmission.

Description

technical field [0001] The present application relates to the technical field of encoding and decoding, and in particular to an encoding method, device and equipment. Background technique [0002] In the process of wireless communication, when the sending end sends data to the receiving end through the main channel, an eavesdropper usually eavesdrops on the data through the eavesdropping channel, which affects the security of the data. [0003] In order to ensure the safe transmission of data, the data needs to be encoded before the sender sends the data. At present, polar codes are usually constructed through a two-stage polarization process, and the data is encoded through the constructed polar codes. Specifically, in each coherent interval, the channel fading is assumed to be constant, and the fading channel is constructed as The modulus is a binary symmetric channel (Binary Symmetry Channel, BSC). The first stage of polarization is to polarize each BSC into a set of ex...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L29/06
Inventor 刘凌凌聪康鑫
Owner HUAWEI TECH CO LTD
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