以RFSoC平台設計與實現高吞吐量DVB-S2 載波頻率同步與訊框同步器;Design and Implementation of High Throughput DVB-S2 Carrier Frequency Synchronizer and Frame Synchronizer with RFSoC Platform

NCUIR > College of Electrical Engineering & Computer Science > Graduate Institute of Communication Engineering > Electronic Thesis & Dissertation > Item 987654321/93519

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/93519

Title:	以RFSoC平台設計與實現高吞吐量DVB-S2 載波頻率同步與訊框同步器;Design and Implementation of High Throughput DVB-S2 Carrier Frequency Synchronizer and Frame Synchronizer with RFSoC Platform
Authors:	陳亭維;Chen, Ting-Wei
Contributors:	通訊工程學系
Keywords:	第二代數位衛星廣播;都普勒效應;載波頻率同步;訊框同步;數位訊號處理;軟體定義無線電;高吞吐量;接收機;現場可程式化邏輯閘陣列;射頻系統晶片;DVB-S2;Doppler Effect;Carrier Frequency Synchronizer;Frame Synchronizer;Digital Signal Processor;Software Defined Radio;High Throughput;Receiver;FPGA;RFSoC
Date:	2023-12-29
Issue Date:	2024-03-05 17:41:38 (UTC+8)
Publisher:	國立中央大學
Abstract:	低軌道通訊的技術蓬勃發展下，數位衛星廣播系統成不可或缺的關鍵。衛星在高速移動的情況下與地面站所產生之都普勒頻率偏移成為重要的課題，也因應高通量資料率串流的通訊技術，DVB-S2 相較於前一代有更好的傳輸量，支援 8PSK、16APSK、 32APSK，使得在不同訊雜比(SNR)下能選擇更有效益的調變與碼率。本論文針對 DVB-S2 接收端之載波頻率同步與訊框同步的硬體架構設計與實現，探討其性能。載波頻率同步使用差分頻率估測器(Differential Frequency Estimator)、導向決策器(Decision-Directed)與迴路濾波器(Loop Filter)計算與修正頻率偏移，訊框同步包含 MODCOD 偵測器(MODCOD Detector)、抓取訊號及相位修正、訊框彈性器(Frame Elasticizer)與實體層解攪亂器(PL Descrambler)。 ;With the flourishing development of Low Earth Orbit (LEO) communications technology, digital video broadcasting systems for satellite (DVB-S) have become indispensable. The Doppler effect generated when satellites are in rapid motion relative to ground stations has become a crucial issue. In response to high-throughput data rate streaming communication technology, DVB-S2 offers improved throughput compared to the previous generation. It supports 8PSK, 16APSK, and 32APSK, allowing for the selection of more efficient modulation and coding schemes under different signal-to-noise ratios (SNR). In this thesis, it focuses on the hardware architecture design and implementation of carrier frequency synchronization and frame synchronization for DVB-S2 receivers, along with a performance evaluation. Carrier frequency synchronization includes a Differential Frequency Estimator, Decision-Directed Phase Estimator, and Loop Filter to compute and correct frequency offsets. Frame synchronization includes MODCOD Detector, signal catcher and phase correction, Frame Elasticizer, and Physical Layer Descrambler.
Appears in Collections:	[Graduate Institute of Communication Engineering] Electronic Thesis & Dissertation

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