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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 low data encoding and decoding efficiency, poor data transmission security and reliability, and long polar code length.

Active Publication Date: 2019-05-03
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 invention provides an encoding method, device and equipment, and the method comprises the steps: determining the Bhattacharyya parameter of a polarization channel which comprises a polarization main channel and a polarization eavesdropping channel; According to the Bhattacharyya parameter of the polarization main channel, determining a first channel set with the Pasteur parameter smaller thana first threshold value in the polarization main channel, determining a second channel set with the Pasteur parameter larger than a second threshold value in the polarization eavesdropping channel according to the Pasteur parameter of the polarization eavesdropping channel, and the first threshold value and the second threshold value being determined according to the mother code length of the to-be-coded information; According to the first channel set and the second channel set, determining a first channel sub-set corresponding to the sub-channel of the information bit, a second channel sub-set corresponding to the sub-channel of the fixed bit and a third channel sub-set corresponding to the sub-channel of the random bit; And encoding the to-be-encoded information according to the first sub-channel set, the second sub-channel set and the third sub-channel set. The security and reliability of data transmission are improved.

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...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L29/06
Inventor 刘凌凌聪康鑫
Owner HUAWEI TECH CO LTD
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