移动通信2025，Vol.49Issue(6)：19-26,42,9.DOI:10.3969/j.issn.1006-1010.20250425-0003
低轨卫星互联网链路受扰性能分析
Interference Performance Analysis of Low Earth Orbit Satellite Internet Links
摘要
Abstract
With the development of 6G integrated space-ground-sea communication and the emergence of direct mobile-to-satellite communication scenarios,the integration of space and ground systems is accelerating.3GPP has facilitated the transition from 5G New Radio to 5G non-terrestrial network(NTN),and OFDM transmission technology has been gradually migrated to space-ground links to enhance satellite communication capabilities.However,the rapid deployment of low Earth orbit(LEO)satellite systems has led to exacerbated co-frequency interference,while also rendering them vulnerable to unintentional or intentional interference from non-communication systems,thereby degrading transmission performance.Currently,interference analysis mainly focuses on frequency-orbit coordination and power control,with insufficient exploration of the impact on the demodulation performance.This paper investigates the impact of typical interference types,such as multi-tone interference,frequency-sweep interference,pulse interference,and multi-carrier interference,on the bit error rate of OFDM downlink signals under different interference and communication parameters,providing theoretical support for interference suppression algorithms.关键词
5G NTN/OFDM/干扰模型/信号解调/误码率Key words
5G NTN/OFDM/interference models/signal demodulation/bit error rate分类
电子信息工程引用本文复制引用
石爽,刘子威,张更新,张步阳,朱进..低轨卫星互联网链路受扰性能分析[J].移动通信,2025,49(6):19-26,42,9.基金项目
国家自然科学基金"低轨卫星物联网移动覆盖和巨址接入"(U21A20450) （U21A20450）
