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A multiple access method, device, electronic equipment and readable storage medium

An access method and multi-dimensional technology, applied in the field of wireless communication, can solve the problems of low quality of MPA receiver initialization information, susceptibility to noise and multipath effects, etc.

Active Publication Date: 2020-01-03
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the SIC-MPA receiver, the initialization information of the MPA receiver comes from the SIC receiver, which is easily affected by noise and multipath effects, so the quality of the initialization information of the MPA receiver is relatively low

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  • A multiple access method, device, electronic equipment and readable storage medium
  • A multiple access method, device, electronic equipment and readable storage medium
  • A multiple access method, device, electronic equipment and readable storage medium

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Embodiment Construction

[0065] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0066] In order to solve the problems of low spectrum utilization rate of transmission data and low quality of initialization information in the SCMA system, embodiments of the present invention provide a multiple access method, device, electronic equipment, and readable storage medium. By constructing a non-uniform code, In order to increase the utilization rate of spectrum and improve the quality of initialization information.

[0067] Firstly, the multiple ...

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Abstract

The embodiment of the invention provides a multiple access method and device, electronic equipment and a readable storage medium which are applied to the technical field of wireless communication. Themethod comprises the steps that bit streams, obtained after channel coding, of multiple users are mapped to different multi-dimensional constellations respectively to obtain multi-dimensional constellation points corresponding to the various bit streams; the multi-dimensional constellation points are subjected to phase rotation to obtain multi-dimensional constellation points after phase rotation; the multi-dimensional constellation points after phase rotation are mapped into code words corresponding to the various bit streams according to a mapping matrix representing a corresponding relation of resource nodes and users; and the dimensions of the multi-dimensional constellations corresponding to non-zero elements of the code words corresponding to the various bit streams are arranged according to a pre-established arranging matrix to obtain transmission code words, and the Euclidean distance sum of the dimensions among user layers corresponding to all resource nodes in the transmission code words is maximum. According to the multiple access method, the quality of receiver initial information on each resource node can be improved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a multiple access method, device, electronic equipment and readable storage medium. Background technique [0002] In wireless communication systems, low latency, high reliability, low power consumption, and massive access are the main technical features of future 5G wireless transmission networks, and multiple access is a major technology. Generally, most communication systems adopt orthogonal multiple access technology. Orthogonal multiple access technology refers to the use of orthogonal resources to achieve multi-user transmission, such as frequency division multiple access, time division multiple access, code division multiple access. OFDMA (Orthogonal Frequency Division Multiple Access) technology is adopted in the 4G wireless transmission system. OFDMA technology improves resource utilization efficiency and can effectively distinguish users, but the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L27/34
CPCH04L1/0009H04L27/3483
Inventor 张宁波康桂霞闫城
Owner BEIJING UNIV OF POSTS & TELECOMM