A generalized rate division multiple access method for multi-cell system

An access method, multi-cell multi-user technology, applied in the field of generalized rate division multiple access, to achieve the effect of improving system energy efficiency and EE

Active Publication Date: 2022-05-27
SHANDONG NORMAL UNIV
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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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  • A generalized rate division multiple access method for multi-cell system
  • A generalized rate division multiple access method for multi-cell system
  • A generalized rate division multiple access method for multi-cell system

Examples

Experimental program
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Embodiment Construction

[0033] Building a system model based on G-RSMA:

[0034] The present invention considers a downlink transmission link multi-cell multi-user multi-input single-output system, assuming that there are N cells, each cell has a configuration N t base station with antennas and transmit information to K n single-antenna users. The present invention considers G-RSMA as a 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, which is 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 general data stream, each user decodes their own private data stream.

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

[0...

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Abstract

Generalized Rate Division Multiple Access (G‑RSMA) technology has the potential to significantly improve the energy efficiency EE and spectral efficiency SE of wireless networks. In order to maximize the energy efficiency EE and spectral efficiency SE of the multi-cell MISO system, the present invention proposes the joint design of beamforming vector and rate allocation using G-RSMA technology, and establishes the method of simultaneously maximizing the energy efficiency EE and spectral efficiency SE Multi-objective optimization problems. The present invention transforms the proposed multi-objective optimization problem into a single-objective optimization problem to realize the EE-SE trade-off. By further studying the quasi-convex relationship between the energy efficiency EE and the spectral efficiency SE, it can be known that within any reachable spectral efficiency SE region Can get the maximum energy efficiency EE. The simulation results prove that under different system parameter settings, compared with the traditional multiple access technology, the system energy efficiency EE is improved under the ideal spectral efficiency SE.

Description

technical field [0001] The present invention relates to a generalized rate division multiple access (G-RSMA) method for multi-cell system, and belongs to the technical field of wireless communication of multi-cell MIMO system. Background technique [0002] Global mobile data traffic is expected to reach 77 exabytes per month by 2022, with the rise of various data-intensive wireless applications and services such as multimedia, autonomous transportation, and virtual reality, according to a Cisco white paper. 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 demands, various promising techniques have been proposed to improve the spectral efficiency SE of emerging fifth-generation (5G) mobile networks. In a multiple-input multiple-output wireless communication network, the base station configures an antenna array and performs p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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