User grouping and power allocation algorithm for UAV-aided NOMA network

Guoquan LI; Jinzhao LIN; Yongjun XU; Zhengwen HUANG; Ting LIU

doi:10.11959/j.issn.1000-436x.2020194

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User grouping and power allocation algorithm for UAV-aided NOMA network

Topics: Communication and Computing Fusion of Intelligent Emergency | 更新时间：2024-06-05

- User grouping and power allocation algorithm for UAV-aided NOMA network
- Journal on Communications Vol. 41, Issue 9, Pages: 21-28(2020)
- 作者机构：
  
  1. 重庆邮电大学通信与信息工程学院，重庆 400065
  2. 光电信息感测与传输技术重庆市重点实验室，重庆 400065
  3. 西安邮电大学陕西省信息通信网络及安全重点实验室，陕西西安 710121
  4. 布鲁内尔大学电子与计算机工程系，伦敦 UB8 3PH
- 作者简介：
- 基金信息：
  
  The National Key Research and Development Program of China(2019YFC1511300);The Natural Science Foundation of Chongqing(cstc2019jcyj-msxmX0666);The Natural Science Foundation of Chongqing(cstc2019jcyj-xfkxX0002);The Open Project of Shaanxi Key Laboratory of Information Communication Network and Security(ICNS201904)
- DOI：10.11959/j.issn.1000-436x.2020194
  CLC： TN929.5
- Online First：2020-09，
  
  Published：25 September 2020
- 稿件说明：
移动端阅览
Guoquan LI, Jinzhao LIN, Yongjun XU, et al. User grouping and power allocation algorithm for UAV-aided NOMA network[J]. Journal on Communications, 2020, 41(9): 21-28.
DOI：

Guoquan LI, Jinzhao LIN, Yongjun XU, et al. User grouping and power allocation algorithm for UAV-aided NOMA network[J]. Journal on Communications, 2020, 41(9): 21-28. DOI： 10.11959/j.issn.1000-436x.2020194.

摘要

为了提高传输的灵活性和应对应急通信的场景，提出了一种基于无人机辅助的非正交多址接入系统用户分组与功率分配联合优化算法。考虑基站最大发射功率约束与用户分组约束，构建了 NOMA 多用户和速率最大化的资源分配问题。为了解决该非凸问题，基于图论提出了最大割定理下的用户分组算法，实现了组内用户与无人机的相对距离最小。基于分组结果，利用辅助变量法，将原非凸功率分配子问题转化为凸优化问题求解。仿真结果表明，所提算法具有较好的和速率性能。

Abstract

To improve the transmission flexibility of emergency communication scenarios

a joint user grouping and power allocation algorithm was proposed for UAV-aided non-orthogonal multiple access (NOMA) system.A sum-rate maximization resource allocation algorithm was formulated under the constraints of the maximum transmit power and the user grouping.To solve the non-convex problem

a graph-based user grouping algorithm was proposed to minimize the relative distance between the UAV and users.Based on the grouping result

the power allocation sub-problem was transformed into a convex one by using the auxiliary-variable approach.Simulation results demonstrate that the proposed algorithm has better performance in terms of sum rates.

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references

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