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dc.contributorKuo-Guan Wuen_US
dc.contributorLi-Der Jengen_US
dc.contributor.advisorFang-Biau Uengen_US
dc.contributor.authorYu, Tsung-Hanen_US
dc.identifier.citation[1] IEEE Std 802.16-2004 (Revision of IEEE Std 802.16-2001),"IEEE Standard for Local and metropolitan area networks Part 16 : Air Interface for Fixed Broadband Wireless Access Systems" 3 Park Avenue, New York,NY 10016- 5997,USA [2] Xilinx Web URL: [3] John Terry and Juha Heiskala,"OFDM wireless LANsa theoretical and practical guide",Indianapolis,Ind. Sams,pp.49-83,c2002. [4] Marc Engels,"Wireless OFDM system show to make them work?",Boston:Kluwer Academic Publishers,pp.95-112,c2002. [5] J.J.Van de Beek, M.Sandell and P.O.Borjesson,"ML Estimation of Time and Frequency Offset in OFDM Systems",IEEE Transactions on Signal Processing,pp.1800-1805,July 1997 [6] Meng Wu and Wei-Ping Zhu,"A preamble-aided symbol and frequency synchronization scheme for OFDM systems",IEEE International Symposium on Circuits and Systems,pp.2627-2630 Vol.3,May 2005 [7] Miaoudakis A,Koukourgiannis A and Kalivas G,"Carrier Frequency Offset Estimation and Correction for Hiperlan/2 WLANs"IEEE Computers and Communications,pp.693-698 ,July 2002 [8] SS Das,RV Rajakumar,MI Rahman,A Pal,FHP Fitzek,"Low Complexity Residual Phase Tracking Algorithm for OFDM-based WLAN Systems",CSNDSP Symposium,2004 [9] H.CWang,"FPGA Implementation of Baseband Receiver for HIPERMAN System",NCHU,Master Thesis,2007 [10] L.J Chang,"Design and FPGA Implementation of DVB-T Baseband Receiver",NCHU,Master Thesis,2007 [11] C.H Su,"Implementation of OFDM Processing and Synchronization for WiMax Receiver",NTHU,Master Thesis,2005 [12] Stefan Johansson,Martin Nilsson,Peter Nilsson,"An OFDM Timing Synchronization ASIC",IEEE Transactions on Electronics,Circuits and Systems,pp.324-327,Dec.2000 [13] Stefan Johmsson,Peter Nilsson and Mats Torkelson,"Implementation of an OFDM Synchronization Algorithm",IEEEMidwest Symposium on Circuits and Systems,pp.228-231 vol.1,Aug 1999 [14] W.M Chiang,"Design and Implementation of a WiMAX Baseband Processor",NTHU,Master Thesis,2005 [15] H.Y Lung,"Design and Implementation of IEEE 802.16 OFDMA Baseband Transceiver",NCTU,Master Thesis,2006 [16] F.J.Lopez-Martinez,"Hardware Implementation of a Correlation-based Synchronization Algorithm for Wireless OFDM",IEEE 18th International Symposium on Personal Indoor and Mobile Radio Communications,Sept 2007 [17] Taekyu Kim,Sangyeon Parkt,Seongbong Leet and Sin-Chong Park,"Hardware Design of CP Length Detector for the WirelessMAN-OFDM System",International Symposium on Intelligent Signal Processing and Communications,pp.474-476,Dec 2006 [18] Ray Andraka,"A survey of CORDIC algorithms for FPGA based computers",ACM/SIGDA sixth international symposium on Field programmable gate arrays,pp.191-200,March 1998 [19] H.H Wu,"The Implementation of Channel Estimation and Phase Tracking for the IEEE 802.11a Receiver",CCU,Master Thesis,2004 [20] Kim Taekyu and Park Sin-Chong,"Arctangent Processor Design for the Frequency Offset Estimation of IEEE 802.16DWirelessman-OFDMSystem",IEEE Workshop on Signal Processing Systems,pp.199-203,Oct 2007en_US
dc.description.abstractWIMAX(Worldwide Interoperability for Microwave Access) 的縮寫,一般中譯為「全球互通微波存取」),是一種新興無線寬頻傳輸技術。在WIMAX 系統由三個部份組成,包括通道編碼、調變和正交分頻多工。然而一個正交分頻多工對於會產生大量載波間干擾的時間或頻率偏移是相當敏感的,造成系統效能大幅下降。在本論文中,我們以硬體描述語言Verilog HDL 實現同步系統,並將以建構好的物件燒錄到Vertex-4的FPGA開發版上,並且量測它的效能。zh_TW
dc.description.abstractWimax,the abbreviation of "World Interoperability for Microwave Access", is an emerging technique of wireless communication. In Wimax system, it is composed of three parts, including channel coding, modulation, and orthogonal frequency division multiplexing (OFDM) system. However an OFDM system is very sensitive synchronization and a small frequency or timing offset may cause a large inter-carrier interference (ICI), lead to dramatic degradation in the system. In the thesis, we implement the synchronization system with Verilog HDL. The result model will download to Xilinx Vertex-4 FPGA development board and evaluate its performance.en_US
dc.description.tableofcontentsACKNOWLEDGEMENT CHINESE ABSTRACT i ENGLISH ABSTRACT ii CONTENTS iii LIST OF FIGURES vi LIST OF TABLES ix 1 INTRODUCTION 1 2 OFDM SYSTEM AND WIMAX STANDARD 3 2.1 Structure of Wimax PHYLayer 3 2.2 OFDM symbol description 6 2.3 Preamble structure 8 2.4 Frame structure 11 3 SYNCHRONIZATION ALGORITHM 12 3.1 Introduction to synchronization problems 12 3.2 Preamble detection 14 3.3 Symbol timing synchronization 16 3.4 Introduction of carrier frequency synchronization 18 3.4.1 Effect of carrier frequency offset 19 3.4.2 Carrier frequency offset estimation 20 3.5 Carrier phase tracking 23 4 HARDWARE IMPLEMENTATION 25 4.1 Hardware design flow 25 4.1.1 Architecture and FPGA Implementation 25 4.1.2 FPGA design flow 25 4.2 Preamble detection 28 4.3 Symbol timing synchronization 29 4.4 Carrier frequency synchronization 30 4.4.1 Carrier frequency synchronization overview 30 4.4.2 CORDIC algorithmand implementation 32 4.5 CFOcompensator 38 4.6 Phase tracking 39 4.7 Pilot generator 40 5 SIMULATION RESULTS 41 5.1 Verification flow 41 5.2 System performance 43 5.2.1 Implementation results of preamble detection 43 5.2.2 Implementation results of symbol timing synchronization 44 5.2.3 Implementation results of carrier frequency offset estimation 45 5.2.4 FPGA Verification 45 5.2.5 FPGAresources 47 6 CONCLUSION AND FUTURE WORK 50 BIBLIOGRAPHY 51en_US
dc.titleFPGA Implementation of Synchronization Technology for Wimax Systemen_US
dc.typeThesis and Dissertationzh_TW
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item.openairetypeThesis and Dissertation-
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