基于混合波束成形的mMIMO低轨卫星信道切换策略
Channel Handover Strategy for MMIMO LEO Satellite Communication Based on Hybrid Beamforming
岳桐 1刘爱军 1童新海 1梁小虎 1潘亦真1
作者信息
- 1. 陆军工程大学 通信工程学院,江苏 南京 210007
- 折叠
摘要
低地轨道(low earth orbit,LEO)卫星通信(satellite communication,SATCOM)是最有希望与未来 6G 及更先进的无线网络相结合的系统之一.将大规模多输入多输出(massive multiple-input multi-ple-output,mMIMO)应用于LEO SATCOM,从 mMIMO 低轨卫星信道模型出发,重点研究单颗 mMIMO低轨卫星内的信道切换问题,根据不同用户终端(user terminal,UT)的服务质量(quality of service,QoS)要求,构建了 3 种不同的信道切换场景,充分利用 mMIMO 的强波束成形能力,以波束跟踪和波束小区动态调整为技术核心,提出了基于混合波束成形的信道切换策略.仿真结果表明,与典型的铱星系统相比,所提出的信道切换策略更具优势.
Abstract
Low earth orbit(LEO)satellite communication(SATCOM)is one of the most promising systems to be incorporated with future 6 G and beyond wireless network.This paper explores how to apply massive multiple-input multiple-output(mMIMO)technology to LEO SATCOM.Starting from the mMI-MO LEO satellite channel model,the focus is on the channel handover issue within a single mMIMO LEO satellite.Based on the quality of service(QoS)requirements of different user terminals(UTs),three dif-ferent channel handover scenarios are constructed.By fully utilizing the strong beamforming capability of mMIMO,with beam tracking and dynamic adjustment of beam cells as the technological core,a channel handover strategy based on hybrid beamforming is proposed.Simulation results show that the proposed channel handover strategy has more advantages,compared with the typical Iridium system.
关键词
大规模多输入多输出/低地轨道卫星通信系统/信道切换/混合波束成形Key words
massive multiple-input multiple-output(mMIMO)/low earth orbit(LEO)satellite communication(SATCOM)system/channel handover/hybrid beamforming引用本文复制引用
基金项目
国家重点研发计划(2018YFB1801103)
国家自然科学基金(61901516)
国家自然科学基金(62171466)
中国博士后科学基金(2019M651648)
江苏省前沿引领技术基础研究(BK20192002)
江苏省自然科学基金(BK20180578)
出版年
2024
NETL
NSTL
维普
万方数据