Unlock instant, AI-driven research and patent intelligence for your innovation.

Multi-domain joint hybrid non-orthogonal multiple access model framework and resource allocation scheme

A non-orthogonal multiple access and resource allocation technology, applied in the field of hybrid non-orthogonal multiple access model framework and resource allocation scheme, can solve problems such as error propagation and generation of decoded signals, and increase the number of equipment access , reduce computational complexity, and expand system capacity

Active Publication Date: 2022-08-02
NANJING UNIV OF POSTS & TELECOMM
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, once a decoding error occurs in the SIC receiver, the remaining decoded signal will also have problems, resulting in error propagation

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multi-domain joint hybrid non-orthogonal multiple access model framework and resource allocation scheme
  • Multi-domain joint hybrid non-orthogonal multiple access model framework and resource allocation scheme
  • Multi-domain joint hybrid non-orthogonal multiple access model framework and resource allocation scheme

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0060] The technical solution of the invention is described in detail below in conjunction with the accompanying drawings:

[0061] like figure 1 As shown, there is one base station and multiple users in the uplink hybrid NOMA system. Both the base station and the user are equipped with a single antenna, and the base station supports two groups of users at the same time, that is, 2J users. In these two groups of users, the user with relatively large channel gain in the group is defined as the near user J S ={j:j=1,...,j s }, the relatively small channel gain of the users in the group is defined as the far user J W ={j:j=1,...,j w }. A total of K orthogonal subcarriers are available for users, and each user passes through d f subcarriers to transmit information. The SCMA encoder logs the user information through a predefined codebook. 2 M bits are mapped to weight d f The K-dimensional codeword of . Define the codebook of the jth user as B J ={x j,1 ,...,x j,M }, wh...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a multi-domain joint hybrid non-orthogonal multiple access model framework and a resource allocation scheme, including the following two stages: the first stage uses a dynamic codebook allocation method to allocate subcarriers to far and near user groups , and grouping pairing of far and near users; the second stage uses MPA and SIC joint detection to obtain the optimal power allocation scheme that maximizes the total rate of the system. The invention improves the traditional non-orthogonal multiple access system, and proposes a new multi-domain joint hybrid non-orthogonal multiple access model framework. Compared with the traditional model, the new model greatly increases the number of device accesses and expands the system capacity. The present invention also proposes a resource allocation scheme based on the model framework, which uses the dynamic codebook allocation method for subcarrier allocation, combines user pairing and power control optimization, further improves the system spectrum efficiency, and uses MPA and SIC at the receiving end. Joint detection reduces computational complexity.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a multi-domain joint hybrid non-orthogonal multiple access model framework and a resource allocation scheme. Background technique [0002] The fifth generation (5G) and future mobile communications are receiving keen attention. The three major application scenarios of 5G, enhanced mobile broadband (eMBB), massive machine type communication (mMTC) and ultra-reliable and low-latency communication (uRLLC), The spectral efficiency, connection density, and reliability of the system present enormous challenges. The traditional Orthogonal Multiple Access (OMA) scheme is difficult to meet the massive access requirements. The Non-Orthogonal Multiple Access (NOMA) scheme, as one of the strong candidates for the future mobile communication multiple access scheme, can Massive access and super-capacity requirements for wireless dense networks. Non-orthogonal multi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04W52/26H04W52/34
CPCH04W72/0453H04W72/0473H04W52/267H04W52/346H04W72/53
Inventor 孙君阮健豪
Owner NANJING UNIV OF POSTS & TELECOMM