Power optimization method for maximizing minimum safety rate of downlink non-orthogonal multiple access (NOMA) mobile users of unmanned aerial vehicle

A non-orthogonal multiple access, mobile user technology, applied in power management, wireless communication, electrical components, etc.

Active Publication Date: 2020-01-24
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, since the LoS channel of the air-to-ground link is usually dominated by small-scale fa

Method used

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  • Power optimization method for maximizing minimum safety rate of downlink non-orthogonal multiple access (NOMA) mobile users of unmanned aerial vehicle
  • Power optimization method for maximizing minimum safety rate of downlink non-orthogonal multiple access (NOMA) mobile users of unmanned aerial vehicle
  • Power optimization method for maximizing minimum safety rate of downlink non-orthogonal multiple access (NOMA) mobile users of unmanned aerial vehicle

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Experimental program
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Embodiment Construction

[0054] figure 1 The impact of the transmission power of the UAV designed in the present invention on the minimum security rate of NOMA mobile users is given, where The height of the UAV is H=50 meters, and the radius of the protected area is 80 meters. From figure 1 It can be seen that in our proposed power allocation strategy, the maximum-minimum secrecy rate increases with the increase of transmission power, which is obviously better than the equal power allocation strategy. Under the equal power allocation strategy, the minimum secrecy rate corresponds to the MU with the worst channel power gain. It can be seen that the minimum secrecy rate increases in the low transmission power area and decreases in the high transmission power area. This is because when the transmission power is large enough, approximated as Similarly Too. Therefore, the minimum secrecy rate drops to zero in the region of higher transmission power.

[0055] figure 2 The influence of the UAV h...

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Abstract

The invention discloses a power optimization method for maximizing the minimum safety rate of downlink non-orthogonal multiple access (NOMA) mobile users of an unmanned aerial vehicle, and relates tothe technical field of information and communication. The objective of the invention is to improve the minimum safety rate of downlink non-orthogonal multiple access (NOMA) mobile users of a maximizedunmanned aerial vehicle. The invention designs a power optimization method for maximizing the minimum safety rate of a downlink non-orthogonal multiple access (NOMA) mobile user of an unmanned aerialvehicle. Poower distribution optimization can be carried out on safe transmission of a large number of NOMA mobile users, and meanwhile, limited resources can be effectively utilized, so that the safety rate of the NOMA mobile users can be effectively improved compared with an average power distribution method while certain service quality of Internet of Things services is guaranteed.

Description

technical field [0001] The invention relates to the technical field of information and communication. Background technique [0002] UAVs are considered to be an important part of future air-space-ground integrated networks because of their ability to provide flexible reconfigurable wireless connectivity with high flexibility. Especially in emergency situations where the terrestrial network is damaged or there is no terrestrial network coverage, drones are often dispatched to perform some temporary tasks, such as providing drone coverage to Internet of Things (IoT) nodes and mobile users in remote areas. In addition, the line-of-sight (LoS) channel provided by the UAV helps to increase the system capacity. In order to fully realize the potential of UAVs, non-orthogonal multiple access (NOMA) has been applied to UAV communication to improve spectrum utilization and improve communication capabilities. While drone-assisted communication brings various advantages, it is notorio...

Claims

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Application Information

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IPC IPC(8): H04W52/24H04W52/26H04W72/04H04W72/08
CPCH04W52/243H04W52/267H04W72/0473H04W72/542
Inventor 贾敏尹志胜郭庆顾学迈刘晓锋
Owner HARBIN INST OF TECH
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