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A Non-Orthogonal Multiple Access Transmission Method

A transmission method and a non-orthogonal technology, which is applied in the field of non-orthogonal multiple access transmission, can solve the problems of unsatisfactory giant connection scenarios, high signaling overhead, and long delay, so as to improve spectral efficiency and the number of connections, Reduce signaling overhead and restore signal effects

Active Publication Date: 2019-04-30
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The short frame data generated by a large number of smart terminals are transmitted to the base station at the same time, which will cause serious congestion
[0003] The media access control protocol of the current mobile communication system cannot meet the requirements of the giant connection scenario due to the high signaling overhead and long delay.

Method used

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  • A Non-Orthogonal Multiple Access Transmission Method
  • A Non-Orthogonal Multiple Access Transmission Method
  • A Non-Orthogonal Multiple Access Transmission Method

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Embodiment Construction

[0039] The technical solution of the present invention will be further introduced below in combination with specific embodiments.

[0040] The invention discloses a non-orthogonal multiple access transmission method, comprising the following steps:

[0041] S1: at the sending end: eg figure 1 As shown, for the nth user's data - binary information sequence b n , n=1,...N, N is the number of users, first the binary information sequence b n Perform channel coding, and then encode the encoded information sequence c n Perform QAM symbol mapping to obtain multiple lengths of D n The sign vector s n , then each block of length D n The sign vector s n Extend the transformation matrix P by perfect energy n transform to a signal vector x of length T n , T≥D n ;Select all T-dimensional signal vectors generated by users Dimensions form a new vector, and map the new vector to a vector containing Generate transmission signals on time-frequency resource blocks of radio resource ...

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Abstract

The invention discloses a non-orthogonal supported multiple access transmission method. Data processing which is performed on a sending terminal comprises the following steps of for data of an nth user, firstly, passing through a block with a length of Dn and then converting each symbol vector with the length of Dn into a signal vector with a length of T through a perfect energy expansion conversion matrix Pn, wherein n=1, ...N; the N is a user number; and the T is greater than or equal to the Dn; selecting T-tilde dimensions from T dimension signal vectors generated by all the users so as to form a new vector and mapping the new vector to a time frequency resource block containing T-tilde wireless resource units so as to generate a sending signal. By using the non-orthogonal supported multiple access transmission method, signaling cost can be effectively reduced, and frequency spectrum efficiency and a connection number can be increased. By using two provided multi-user receiving schemes, the signal can be effectively recovered and complexity is reduced.

Description

technical field [0001] The invention relates to wireless communication technology, in particular to a non-orthogonal multiple access transmission method. Background technique [0002] With the integration of the mobile Internet and the Internet of Things, mobile communication not only needs to meet the needs of communication between people, but also needs to support communication between people and machines, and between machines. When the number of network communication terminals is very large When , the giant connection scene is generated. The giant connection scenario has the characteristics of small data packets, a large number of terminals, and low latency. The short-frame data generated by a large number of smart terminals is transmitted to the base station at the same time, which will cause serious congestion. [0003] The current medium access control protocol of the mobile communication system cannot meet the requirements of the giant connection scenario due to the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04L5/00
CPCH04L5/001H04L5/0037H04L5/0044H04L27/2628
Inventor 高西奇王闻今赵蓉王智超仲文江彬
Owner SOUTHEAST UNIV