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Hybrid beamforming and non-orthogonal multiple access transmission method for air-to-air communication

A non-orthogonal multiple access and beamforming technology, applied in the field of airport communication, can solve the problems of mutual signal interference, occasional multi-resource variables, etc., and achieve the effect of improving spectral efficiency and low computational complexity

Active Publication Date: 2019-07-02
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the problems of mutual signal interference and occasional multi-resource variables, it still faces great difficulties in using hybrid beamforming and non-orthogonal multiple access technology in air-to-air communication

Method used

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  • Hybrid beamforming and non-orthogonal multiple access transmission method for air-to-air communication
  • Hybrid beamforming and non-orthogonal multiple access transmission method for air-to-air communication
  • Hybrid beamforming and non-orthogonal multiple access transmission method for air-to-air communication

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the drawings and embodiments.

[0026] The present invention provides a hybrid beamforming and non-orthogonal multiple access transmission method for airborne communication. The specific steps are as follows:

[0027] Step 1. Model the channel between the ground base station and the UAV for the downlink non-orthogonal multiple access communication system.

[0028] The ground base station connects K remote single-antenna UAVs in the same time domain, frequency domain, and code domain resource block, named UAV 1, UAV 2,..., UAV K respectively. The ground base station adopts millimeter wave hybrid beamforming structure for directional communication, such as figure 1 As shown, the number of antennas on the ground base station is N and the number of radio frequencies is M, where K> M; The radio frequency and the antenna are fully connected, and each antenna is controlled by a power amplifier and a phase con...

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Abstract

The invention discloses a hybrid beamforming and non-orthogonal multiple access transmission method for air-to-air communication, aims at an air-to-air communication downlink transmission system, adopts hybrid beamforming and non-orthogonal multiple access technologies, and belongs to the technical field of air-to-air communication. The method comprises the following steps: constructing a communication scene of a ground base station and an unmanned aerial vehicle, grouping the unmanned aerial vehicle according to a channel response vector, and jointly designing hybrid beamforming and power distribution to achieve the purpose of maximizing the sum of multiple space bases and multiple user reachability under the constraint of the lowest reachability; the number of accessed unmanned aerial vehicles can be multiplied under the same time-frequency resource, and the spectrum efficiency is effectively improved.

Description

Technical field [0001] The invention belongs to the technical field of airborne communication, and specifically is a method for airborne communication hybrid beamforming and non-orthogonal multiple access transmission. Background technique [0002] With the rapid development of mobile communication technology and the continuous improvement of ground infrastructure, the supported data transmission rate is gradually increasing. Compared with the previous generation technology, the transmission rate of the fifth-generation mobile communication is at least 10 times higher than that of the previous generation technology. 1000 times, the number of Internet devices has expanded by more than 100 times. However, a bottleneck facing the development of mobile communication is the coverage problem. At present, mobile communication can only cover land areas with high population density, and cannot achieve coverage for remote areas, mountains, forests, deserts, and oceans. For the coverage bl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04B7/06H04B7/185
CPCH04B7/043H04B7/0617H04B7/18506
Inventor 肖振宇曹先彬罗喜伶朱立鹏董航
Owner BEIHANG UNIV