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A multi-user concurrent communication method based on sparse code multiple access

A sparse code multiple access and information expansion technology, which is applied in the field of multi-user concurrent communication of end information expansion sequence, and can solve the problems of low transmission efficiency of end information expansion sequence, etc.

Active Publication Date: 2022-04-01
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The end information extension sequence has good concealment, and has certain advantages in ensuring the safe transmission of user information, but in a large number of studies, the problem of low transmission efficiency of the end information extension sequence is often ignored

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  • A multi-user concurrent communication method based on sparse code multiple access
  • A multi-user concurrent communication method based on sparse code multiple access
  • A multi-user concurrent communication method based on sparse code multiple access

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Embodiment Construction

[0017] In order to make the purpose, technology and advantages of the present invention clearer, the present invention will be further described in detail and completely below in conjunction with the accompanying drawings.

[0018] Step (1): The client M converts the communication content msg into a binary form Bin_msg using an information conversion algorithm, where Bin_msg represents the binary form of the user M's communication content msg.

[0019] In the step (1), the client M accessing the system needs to convert the communication content into an 8-bit binary form according to the ASCII character conversion table, and convert the insufficient bits by filling the highest bit with 0.

[0020] Step (2): The system generates the corresponding codebook {CodeB 1, CodeB 2, ..., CodeB m} for the user according to the mapping matrix, where CodeB 1 represents the first codebook, CodeB 2 represents the second codebook, and CodeBm Indicates the mth codebook.

[0021] In the step (2...

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Abstract

The invention relates to a multi-user concurrent communication method of terminal information extension sequence based on sparse code multiple access. The method uses sparse coding before loading the communication content msg into the terminal information expansion sequence, so as to improve the problem of low transmission efficiency of the terminal information expansion sequence, further improve the utilization rate of the terminal information, and realize the requirement of multi-user concurrent communication. In the process of data modulation, first use the message conversion algorithm to preprocess the communication content msg, and then separate it in units of characters, so as to ensure the accuracy of the receiving end's analysis of user information, and then perform code word conversion according to the user information Select, and finally encapsulate the code word in the data packet through the terminal information extension sequence loading algorithm, and send it to the network environment through the socket. After the receiving end extracts the data packets, the sparsity of the codeword is used to distinguish the users and restore the communication content of the users. The invention can make the terminal information expansion sequence have good transmission performance while maintaining its own concealment, so that the communication mode based on the terminal information expansion sequence can better meet the requirements of interconnection of all things and massive access in future communication scenarios.

Description

technical field [0001] The invention relates to a multi-user concurrent communication method of terminal information extension sequence based on sparse code multiple access. It aims to realize the purpose of multi-user concurrent communication in the communication system based on terminal information extension sequence, improve the utilization rate of terminal information resources, and then realize safe, efficient and fast information communication, which belongs to the field of network security technology. Background technique [0002] The definition of terminal information refers to the conversion of data through the terminal information extension algorithm, and a piece of data is represented by a sequence of multiple terminal information (IP address, port, protocol, etc.). Each terminal information has nothing to do with the represented data itself. relation. The sender converts the communication content through the terminal information expansion algorithm, hides it in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0456H04L27/34
CPCH04B7/0456H04L27/3483
Inventor 石乐义兰茹段鹏飞赵东东徐兴华任佳豪
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)