通信与信息技术Issue(z1)：26-30,5.
基于Gold序列频分复用的低轨卫星通导一体化设计与性能分析
LEO satellite integrated comnav system based on gold sequence and frequency-domain multiplexing
ZHANG Hongbo 1SHANG Debang 2CAI ju2
作者信息
- 1. School of Communication Engineering,Chengdu University of Information Technology,Chengdu 611844,China||TianfuJiangxi Laboratory,Chengdu 641419,China
- 2. School of Communication Engineering,Chengdu University of Information Technology,Chengdu 611844,China
- 折叠
摘要
Abstract
This paper presents a frequency-division multiplexed(FDM)integrated communication and navigation system for Low Earth Or-bit(LEO)satellites based on Gold sequences.The transmitter employs orthogonal frequency-division multiplexing(OFDM)to multiplex naviga-tion and communication signals.The navigation signal incorporates continuous wave(CW)pilots,Gold-sequence pilots,and spread-spectrum frames for enhanced interference robustness.The communication signal is 5G NR-compatible and power-enhanced by 6 dB to improve signal-to-noise ratio(SNR).At the receiver,a cascaded three-stage frequency offset compensation scheme based on PSS,CP,and SSS achieves±10 Hz ac-curacy.Joint channel estimation using DM-RS and CW pilots,combined with an improved MMSE equalizer and phase correction via navigation pilots,ensures signal recovery.Simulations show EVM below 15%and SNR above 10 dB for communication signals,and EVM below 21%for navi-gation.The proposed fully digital design is compatible with 5G infrastructure and provides a low-complexity,real-time solution for LEO satellite communication-navigation integration.关键词
低轨卫星/通导一体化/Gold序列/频分复用/改进的MMSE均衡算法/联合检测/相位噪声补偿Key words
LEO satellites/Integrated communication and navigation/Gold sequence/Frequency division multiplexing/Enhanced MMSE equalization/Joint detection/Phase noise compensation分类
信息技术与安全科学引用本文复制引用
ZHANG Hongbo,SHANG Debang,CAI ju..基于Gold序列频分复用的低轨卫星通导一体化设计与性能分析[J].通信与信息技术,2025,(z1):26-30,5.
