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A Feature Extraction Method for Channel Coding Based on Finite Field Fourier Transform

A Fourier transform and channel coding technology, which is applied in the field of channel coding feature extraction based on finite field Fourier transform, to achieve the effect of improving generalization ability and classification accuracy.

Active Publication Date: 2021-06-29
UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of channel coding features, and propose a channel coding feature extraction method based on finite field Fourier transform

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  • A Feature Extraction Method for Channel Coding Based on Finite Field Fourier Transform
  • A Feature Extraction Method for Channel Coding Based on Finite Field Fourier Transform
  • A Feature Extraction Method for Channel Coding Based on Finite Field Fourier Transform

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Embodiment Construction

[0040] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0041] like figure 1 As shown, the present invention provides a method for extracting channel coding features based on finite-field Fourier transform, comprising the following steps:

[0042] S1: Extract the coded data block to be processed from the information code stream;

[0043] S2: Preprocessing the coded data block to be processed to obtain the coded data block;

[0044] S3: performing finite-field Fourier transform on the coded data block to obtain a finite-field Fourier transform matrix of the coded data block;

[0045] S4: Enlarge the zero-frequency component of the finite-field Fourier transform matrix to obtain the row vector of the coded data block;

[0046] S5: Perform normalization processing on the row vectors to obtain feature vectors, and complete feature extraction of channel coding.

[0047] In the embodiment of the present inventi...

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Abstract

The invention discloses a channel coding feature extraction method based on finite-field Fourier transform, comprising the following steps: S1: extracting coded data blocks to be processed from information code streams; S2: preprocessing the coded data blocks to be processed , to obtain the encoded data block; S3: Perform finite-field Fourier transform on the encoded data block; S4: Perform amplified zero-frequency component processing to obtain the row vector of the encoded data block; S5: Perform normalization processing to obtain the feature vector, and complete Feature extraction for channel coding. The feature extraction method provided by the invention can obtain the frequency spectrum information of each frame of coded data on the finite field, which is beneficial to improving the generalization ability of the finite field Fourier transform feature under the condition of high bit error rate. At the same time, compared with directly classifying the original data, the feature extraction method of the present invention has a greater improvement in classification accuracy, which is beneficial for subsequent machine learning algorithms to use the feature extraction results of the present invention.

Description

technical field [0001] The invention belongs to the technical field of communication signal processing, and in particular relates to a channel coding feature extraction method based on finite-field Fourier transform. Background technique [0002] Whether in mobile communication systems, satellite communication systems, software radio systems, or multimedia service systems, channel coding analysis and identification is of great significance in the fields of intelligent communication and information countermeasures. It can be seen that correctly identifying the type of channel coding and related parameters from the information code stream plays a vital role in the field of electronic reconnaissance. At present, the recognition and analysis of channel coding mainly stays on the recognition and analysis of limited prior knowledge, and there are not many real blind recognition and analysis. The feature extraction is to map the high-dimensional information to the low-dimensional ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/02H04L1/00G06F17/14G06F17/16
CPCG06F17/14G06F17/16H04L1/0009H04L25/0242
Inventor 潘晔张继红杨健邵怀宗王沙飞林静然利强
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA