基于下行NOMA的多波束卫星通信稳健波束成形算法

阚鹏程; 王子宁; 孔槐聪; 欧阳键; 林敏

doi:10.11959/j.issn.2096-8930.2021043

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基于下行NOMA的多波束卫星通信稳健波束成形算法

专题：面向6G的天地一体化信息网络 | 更新时间：2024-06-05

- 基于下行NOMA的多波束卫星通信稳健波束成形算法
- Robust Beamforming Algorithm for Multibeam Satellite Communication Based on Downlink NOMA
- 天地一体化信息网络 2021年2卷第4期页码：53-59
- 作者机构：
- 作者简介：
  
  [ "阚鹏程（1999-），男，南京邮电大学通信与信息工程学院硕士生，主要研究方向为卫星通信、无线通信" ]
  [ "王子宁（1997-），男，南京邮电大学通信与信息工程学院博士生，主要研究方向为无线通信、智能信号处理" ]
  [ "孔槐聪（1995-），男，南京邮电大学通信与信息工程学院博士生，主要研究方向为无线通信、新型多址接入技术" ]
  [ "欧阳键（1983-），男，南京邮电大学通信与信息工程学院副教授，主要研究方向为无人机通信、物理层安全" ]
  [ "林敏（1972-），男，南京邮电大学通信与信息工程学院副教授，主要研究方向为无线通信系统、智能信号处理、天线新技术等" ]
- 基金信息：
- DOI：10.11959/j.issn.2096-8930.2021043
  中图分类号： TP927
- 网络出版日期：2021-12，
  
  纸质出版日期：2021-12-20
- 稿件说明：
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阚鹏程, 王子宁, 孔槐聪, 等. 基于下行NOMA的多波束卫星通信稳健波束成形算法[J]. 天地一体化信息网络, 2021,2(4):53-59.

Pengcheng KAN, Zining WANG, Huaicong KONG, et al. Robust Beamforming Algorithm for Multibeam Satellite Communication Based on Downlink NOMA[J]. Space-integrated-ground information networks, 2021, 2(4): 53-59.
阚鹏程, 王子宁, 孔槐聪, 等. 基于下行NOMA的多波束卫星通信稳健波束成形算法[J]. 天地一体化信息网络, 2021,2(4):53-59. DOI： 10.11959/j.issn.2096-8930.2021043.

Pengcheng KAN, Zining WANG, Huaicong KONG, et al. Robust Beamforming Algorithm for Multibeam Satellite Communication Based on Downlink NOMA[J]. Space-integrated-ground information networks, 2021, 2(4): 53-59. DOI： 10.11959/j.issn.2096-8930.2021043.

摘要

为了进一步提高多波束卫星系统的频谱效率，满足多接入的需求，提出一种基于下行非正交多址的稳健波束成形与功率分配方法。在已知非完美信道状态信息条件下，首先，建立满足NOMA用户服务质量和地球站干噪比阈值的概率约束的功率最小化问题；然后，针对此非凸问题，采用伯恩斯坦不等式将概率约束转换成确定形式，并将原问题分解为波束成形和功率分配两个子问题，通过交替迭代完成稳健设计。仿真结果表明，与其他现有方案相比，所提方案具有更好的稳健性和有效性。

Abstract

To improved the spectrum efficiency of multibeam satellite system and meet the requirement of multi-access

a robust beamforming and power allocation scheme based on non-orthogonal multiple access (NOMA) was proposed.Under the condition that the imperfect channel state information was known

fi rstly

a power minimization problem subject to probability constraints of users’ quality of service requirement and earth stations’ interference-to-noise ratio was formulated.In order to address the non-convex problem

we then adopted Bernstein inequality to converted the probability constraints into deterministic forms and decomposed the original problem into beamforming sub-problem and power allocation sub-problem

and the robust design was conducted by alternating optimization.Simulation results showed that the proposed scheme has better robustness and eff ectiveness compared with other existing schemes.

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references

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