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User grouping method and system of beam space NOMA transmission system

A user grouping and transmission system technology, which is applied to the user grouping method and system field of the beam space NOMA transmission system, and can solve the problem of not being able to support users at the same time

Inactive Publication Date: 2022-05-03
NANTONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current user grouping method is to form a NOMA group of users covered by the same beam, resulting in the number of user groups being far greater than the number of RF links, so it cannot support users in the system at the same time

Method used

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  • User grouping method and system of beam space NOMA transmission system
  • User grouping method and system of beam space NOMA transmission system
  • User grouping method and system of beam space NOMA transmission system

Examples

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Embodiment 1

[0026] The user grouping method provided in this embodiment is suitable for beam space NOMA data transmission systems, such as figure 1 As shown, the beam space NOMA data transmission system includes: channel estimation module, beam selection network, NOMA superposition coding module, digital-to-analog conversion module, RF link, convex mirror antenna array and user receiving module.

[0027] The channel estimation module is used to estimate the beam space channel of the user;

[0028] The beam selection network is connected to the channel estimation module, and the beam selection network is used to perform beam selection and power allocation operations according to the beam space channel of the user, and obtain the selected beam and user allocation power;

[0029] The NOMA superposition coding module is connected to the beam selection network, and the NOMA superposition coding module is used to perform superposition coding operations according to the power allocated by users ...

Embodiment 2

[0117] This embodiment is used to provide a user grouping system of a beam space NOMA transmission system, such as Figure 4 As shown, the user grouping system includes:

[0118] The beam space channel calculation module M1 is used to obtain the channel between the user antenna and the convex mirror antenna array for each user accessing the beam space NOMA transmission system, and determine the beam space channel of the user according to the channel; The beam spatial channel includes channel gains of the user on all beams of the beam selection network;

[0119] The initial grouping module M2 is configured to form all the users into a first user group to obtain a first user grouping scheme, and calculate the first rate sum of the first user grouping scheme according to the beam space channels of all the users;

[0120] The adjustment module M3 is configured to adjust the first user grouping scheme with the rate and maximum as the target, to obtain an adjusted user grouping sch...

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Abstract

The invention relates to a user grouping method and system for a beam space NOMA transmission system, and the method comprises the steps: obtaining a channel between a user antenna and a convex lens antenna array for each user accessing the beam space NOMA transmission system, and determining a beam space channel of the user according to the channel. All the users form a first user group to obtain a first user grouping scheme, a first rate sum of the first user grouping scheme is calculated according to beam space channels of all the users, and the first user grouping scheme is adjusted by taking the maximum rate sum as a target to obtain an adjusted user grouping scheme, so that the users in the system can be supported at the same time; and the sum of the user access rates is maximized.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a user grouping method and system of a beam space NOMA transmission system. Background technique [0002] At present, mobile communication systems have begun to use the millimeter wave band, but the transmission loss of wireless electromagnetic waves in the millimeter wave band is very large, and a large-scale antenna array needs to be used to compensate through beamforming technology. Convex mirror antenna arrays are highly integrated, flexible and convenient to use, and are a common way to realize large-scale antenna arrays. Non-orthogonal Multiple Access technology (Non-orthogonal Multiple Access, NOMA) can access more users under the same hardware conditions, and its combination with convex mirror antenna array has broad application prospects in millimeter wave communication. [0003] In a mobile communication system, a base station is configured to install a fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/08H04L25/02H04B7/0408
CPCH04W4/08H04B7/0408H04L25/0204
Inventor 刘敏邱恭安季彦呈
Owner NANTONG UNIVERSITY
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