移动通信2025，Vol.49Issue(6)：69-74,102,7.DOI:10.3969/j.issn.1006-1010.20250506-0001
一种适用于大多普勒场景通信的波形方案
A Waveform Scheme Suitable for Communication in Large Doppler Scenarios
王宇轩 1季铄 1孙耀华1
作者信息
- 1. 北京邮电大学网络与交换技术国家重点试验室,北京 100876
- 折叠
摘要
Abstract
In low Earth orbit satellite communication systems,the high-speed movement of satellites can cause significant Doppler frequency offset,resulting in a significant signal frequency shift.Traditional modulation techniques are sensitive to frequency offset,leading to severe degradation in signal transmission performance in this case.To address this issue,a frequency sequence multiplexing(FSM)technique is proposed.This technique modulates information into the frequency sequence domain through a fast Walsh Hadamard transform,effectively overcoming the Doppler effect and achieving a better signal transmission performance.At the receiving end,a low complexity signal detection method is proposed by approximately sparsifying the channel,which reduces the difficulty of signal recovery.关键词
低轨卫星通信/多普勒效应/频率序列复用Key words
LEO satellite communication/Doppler effect/frequency sequence multiplexing分类
信息技术与安全科学引用本文复制引用
王宇轩,季铄,孙耀华..一种适用于大多普勒场景通信的波形方案[J].移动通信,2025,49(6):69-74,102,7.
