應用於B5G高通量立方衛星之FPGA數位基頻 通訊系統設計與驗證;FPGA-Based Digital Baseband Communication System Design and Implementation for B5G High Throughput CubeSats

NCUIR > College of Earth Sciences > Graduate Institute of Space Science > Department of Earth Sciences > Item 987654321/97376

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/97376

Title:	應用於B5G高通量立方衛星之FPGA數位基頻通訊系統設計與驗證;FPGA-Based Digital Baseband Communication System Design and Implementation for B5G High Throughput CubeSats
Authors:	陳柏安;CHEN, BO-AN
Contributors:	太空科學研究所
Keywords:	數位基頻訊號設計;衛星通訊酬載;數位調變;硬體設計;DVB-S2;FPGA;QPSK;Digital Signal Processing;B5G CubeSat
Date:	2025-07-15
Issue Date:	2025-10-17 11:13:16 (UTC+8)
Publisher:	國立中央大學
Abstract:	隨著非地面網路 (NTN) 與低軌道衛星通訊系統的蓬勃發展，如何在有限資源與高動態環境中實現穩定且高效的數位基頻通訊模組成為關鍵課題。為因應衛星任務對低延遲、高頻寬與模組化設計的需求，本研究提出一套符合DVB-S2標準之數位收發機架構，並以FPGA為核心實現系統設計。藉由Zynq SoC 結合AD9361 RF前端，構建出完整的SDR平台。發射端訊號以自行設計之DVB_DM1訊號模組為主，支援不同 Oversampling Ratio (OVSR) 配置以模擬變化頻寬場景；接收端則透過 ILA、DMA與 PYNQ平台實現即時資料回收與後端數位訊號處理。系統最終成功整合並實驗於3U立方衛星「Nightjar」通訊酬載中。此外也整合UHF次系統，並通過包含熱真空、振動、輻射等環境測試驗證。並且實驗結果顯示本系統在短距與20公尺OTA對傳中皆可達成低於10%的誤差向量幅度 (EVM)，證實本設計架構具備實用性與高度可擴展性，為實現B5G衛星通訊模組提供具體實作方案與驗證依據。;With the emergence of Non-Terrestrial Networks (NTN) and Low Earth Orbit (LEO) satellite systems, the development of efficient and robust digital baseband architecture has become essential. This study presents an FPGA-based DVB-S2 compliant digital transceiver architecture for satellite communication payloads. The system integrates a Zynq SoC and AD9361 RF front-end to form a complete SDR platform. A custom DVB_DM1 module is designed to support variable oversampling ratios, simulating diverse bandwidth scenarios. The receiver incorporates ILA, DMA, and PYNQ for real-time data capture and backend processing. The architecture is implemented and verified on the 3U CubeSat “Nightjar,” alongside a UHF subsystem. Environmental validation including thermal vacuum, vibration, and radiation tests was conducted. Experimental results confirm that the system achieves error vector magnitude (EVM) below 10% in both short-range and 20-meter OTA transmission, demonstrating its practicality and scalability for future B5G satellite applications.
Appears in Collections:	[Graduate Institute of Space Science] Department of Earth Sciences

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