Generalized rate division multiple access method for multi-cell system

An access method and multi-cell technology, applied in power management, electrical components, wireless communication, etc.

Active Publication Date: 2020-06-19
SHANDONG NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ultra-dense deployment of base stations leads to excessive spectral efficiency SE enhancement, while energy consumption poses an increasing challenge to build a sustainable and green 5G wireless network

Method used

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  • Generalized rate division multiple access method for multi-cell system
  • Generalized rate division multiple access method for multi-cell system
  • Generalized rate division multiple access method for multi-cell system

Examples

Experimental program
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Embodiment Construction

[0033] Construct system model based on G-RSMA:

[0034] The present invention considers a downlink transmission link multi-cell multi-user multiple-input single-output system, assuming that there are N cells, and each cell has a configuration N t base station with antennas and transmits information to K n single-antenna users. The present invention considers G-RSMA as user access strategy. In cell n, the base station splits the information sent to users into public and private parts, and the public parts of all users in the cell are superimposed and encoded into a common information, and then further encoded into a common data stream. Furthermore, each private message is independently encoded into a private data stream. At the receiving end, each user decodes the common data stream by treating all private data streams as noise. After removing the decoded common data stream, each user decodes its own private data stream.

[0035] Signal construction is based on G-RSMA:

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Abstract

The generalized rate division multiple access (G-RSMA) technology has the potential of remarkably improving the energy efficiency EE and the spectral efficiency SE of the wireless network. In order tomaximize the energy efficiency EE and the spectral efficiency SE of a multi-cell MISO system, the invention provides a joint design of a beam forming vector and rate allocation by applying a G-RSMA technology, and establishes a multi-objective optimization problem of maximizing the energy efficiency EE and the spectral efficiency SE at the same time. According to the method, the proposed multi-objective optimization problem is converted into a single-objective optimization problem to realize EE-SE trade-off, and the maximum energy efficiency EE can be obtained in any reachable spectral efficiency SE area by further researching the pseudo-convex relationship between the energy efficiency EE and the spectral efficiency SE. Simulation results prove that under different system parameter settings, compared with a traditional multiple access technology, the energy efficiency EE of the system is improved under the condition that the ideal spectral efficiency SE is obtained.

Description

technical field [0001] The invention relates to a generalized rate division multiple access (G-RSMA) method for a multi-cell system, and belongs to the technical field of wireless communication of a multi-cell multi-input multi-output system. Background technique [0002] According to Cisco's white paper forecast, with the rise of various data-intensive wireless applications and services (such as multimedia, autonomous transportation, and virtual reality), global mobile data traffic is expected to reach 77 exabytes per month by 2022. In order to support these wireless services with high data rate requirements, the energy consumption pressure of mobile communication systems is also increasing. [0003] To meet the increasing traffic demand, various promising techniques have been proposed to improve the spectral efficiency SE of emerging fifth-generation (5G) mobile networks. In the MIMO wireless communication network, the base station configures the antenna array and perform...

Claims

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Application Information

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IPC IPC(8): H04W24/02H04W52/24H04W52/34
CPCH04W24/02H04W52/242H04W52/241H04W52/243H04W52/34
Inventor 张佳张京华孙建德
Owner SHANDONG NORMAL UNIV
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