跳到主要內容

臺灣博碩士論文加值系統

(44.211.31.134) 您好!臺灣時間:2024/07/25 18:08
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果 :::

詳目顯示

我願授權國圖
: 
twitterline
研究生:蔡宗軒
研究生(外文):Tsung-Hsuan Tsai
論文名稱:應用於WiMAX發射機之產線量測分析系統
論文名稱(外文):The measurement and analysis system of WiMAX transmitter for production line
指導教授:楊正任
學位類別:碩士
校院名稱:元智大學
系所名稱:通訊工程學系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2007
畢業學年度:96
語文別:中文
論文頁數:82
中文關鍵詞:無線城域網路軟體接收機產線錯誤向量幅度
外文關鍵詞:WiMAXsoftware receiverproduction lineEVM
相關次數:
  • 被引用被引用:0
  • 點閱點閱:241
  • 評分評分:
  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:0
隨著全球電信業者積極爭取WiMAX營運的主導權,加上各主要國家積極推廣及陸續發照,吸引無線設備大廠爭相投入研發和量產,WiMAX相關產業已經成為下ㄧ個明星產業;不過傳統測試設備的安裝複雜、成本偏高,如何提供最佳化的產品開發與量產測試,仍是業界極需要突破的重點。本論文目的即是以IEEE 802.16d的實體層為基本,設計一個Matlab軟體接收機的系統,從封包的偵測、頻率偏移的估測與補償、碼框的同步、通道的估測與補償、相位的追蹤乃至錯誤向量幅度的估測;硬體上,使用正文科技的WiMAX CPE射頻模組與轉接板;最後以LabVIEW為軟體的開發環境,設計一套人機介面之量測平台,作為訊號擷取、系統儀器控制及資料分析。將軟、硬體整合完成『低成本』的WiMAX發射機之產線測試分析系統,以取代向量訊號分析儀來量測錯誤向量幅度(EVM)。
As the communication companies all over the world strive the leading for the WiMAX business positively. Many countrys promote and issue a license one after another. Attracting the several famous radio equipment companies are devoting aggressively in the field. WiMAX industry has became the market spot, but building the test process is complex. Besides, the cost is high than traditional test facility. How to provides the best way of production still was the key point needs to break though extremely. In this thesis, our goal is to developing effective architecture for the inner receiver system based on the IEEE 802.16d standard. We design a software radio system which contains packet detection, frequency offset estimation, frame synchronization, channel estimation, phase tracking. The hardware architecture is composed of WiMAX CPE, which contain RF module and interface board. Besides, we use LabVIEW to design a friendly interfaces for signal sampling, instrument control, and data analysis. Finally, I integrate the software and hardware into a “low cost” test plate-form, which is the measurement and analysis system of WiMAX transmitter for production line.
中文摘要………………………………………………………………….i
英文摘要………………………………………………………………....ii
致謝………………………………………………………………...……iii
目錄………………………………………………………………...……iv
圖目錄………………………………………………………………......vii
表目錄……………………………………………………………………x
第一章 緒論…………………………………………………………..…1
1.1 研究動機………………………………….……………………3
1.2 研究方法………………………………..…………….. ………4
第二章 WiMAX標準簡介……………………………………………..6
2.1 簡介正交分頻多工…………………………………………….7
2.2 IEEE 802.16d實體層的架構…………………………………...9
2.2.1 OFDM符元…………………………………………….10
2.2.2 OFDM重要參數……………………………………….13
2.2.3 前導架構和調制………………………………………16
2.2.4 碼框結構………………………………………………19
2.2.5 資料調變………………………………………………22
第三章 軟體接收機的架構與設計……………………………………24
3.1 封包的偵測………………………………………….………..25
3.1.1 封包偵測的演算法……………………………………25
3.2 頻率偏移估測以及頻率補償………………….……..28
3.2.1 頻率偏移估測和補償的演算法………………………29
3.2.2 頻率估測的性能………………………………………31
3.3 碼框同步……………………………………………….33
3.3.1碼框同步的輔助工具………………………………34
3.3.2碼框同步的演算法…………………………………35
3.4 通道估測以及通道補償………………….…………………..38
3.4.1通道估測和補償的演算法………………………...38
3.5 相位追蹤……………………………………………………...42
3.5.1相位追蹤的演算法………………………………….42
3.6 錯誤向量幅度估測…………………………………………...45
第四章 系統模擬與整合測試…………………………………………49
4.1 系統模擬與分析……………………………………………...49
4.1.1 封包的偵測……………………………………………51
4.1.2 頻率偏移估測與頻率補償……………………………54
4.1.3 碼框同步……………………………………………..54
4.1.4 通道估測與通道補償……………………………...58
4.1.3 相位追蹤……………………………………………..60
4.1.3 錯誤向量幅度估測…………………………………61
4.2 系統整合與量測結果………………………………………...61
4.2.1 虛擬儀控的測試介面…………………………………63
4.2.2 訊號量測結果…………………………………………65
4.3 整合性討論…………………….……………………………..73
第五章 結論……………………………………………………………75
附錄……………………………………………………………………..76
參考文獻………………………………………………………………..80
[1] Salzberg, B. R., “Performance of an efficient parallel data transmission system,” IEEE Trans. Commun., Vol. COM-15, pp. 805-811, Dec. 1967.
[2] Dukhyun Kim and Gordon L. Stuber, “Residual ISI Cancellation for OFDM with Applications to HDTV Broadcasting,” IEEE J. on Select. Areas in Commun., Vol. 16, No. 8, pp. 1590-1599, October 1998. [1] Weinstein, S. B., and P. M. Ebert, “Data Transmission by Frequency Division Multiplexing Using the DiscreteFourier Transform,” IEEE Trans. Commun., Vol. COM-19, pp. 628-634, Oct. 1971.
[3] IEEE, “Std 802.16-2004, IEEE Standard for Local and Metropolitan Area Networks. Part16: Air Interface for Fixed Broadband Wireless Access Systems,” May 2004.
[4] John G. Proakis, “Digital Communications,” New York: McGraw- Hell, 1995.
[5] G. Singh and A. Alphones, “OFDM Modulation Study for a Radio-over-Fiber System for Wireless LAN (IEEE 802.11a),” In Proc. Commun. , vol. 3, pp. 1460-1464, Dec. 2003.
[6] Timothy M. Schmidl and Donald C. Cox, “Robust Frequency and Timing Synchronization for OFDM,” IEEE Trans. Commun., Vol. 45, No. 12, pp. 1613-1621, December 1997.
[7] C. S. Peng and K. A. Wen, “Synchronization for Carrier Frequency Offset in Wireless LAN 802.11a System,” Wireless commun., The 5th International Symposium, vol. 3, pp. 1083-1087, Oct. 2002.
[8] F. Classen and H. Meyr, “Frequency synchronization algorithms for OFDM systems suitable for communication over frequency selective fading channels,” IEEE Vehicular Technology Conference, 1994, Volume 3, pp. 1655-1659, June 1994.
[9] P. Moose, “A technique for orthogonal frequency division multiplexing frequency offset correction,” IEEE Trans. Commun., vol. 42, pp.2908–2914, Oct. 1994.
[10] Jan-Jaap van de Beek, Magnus Sandell, and Per Ola Borjesson, “ML Estimation of Time and Frequency Offset in OFDM Systems,” IEEE Trans. Signal Processing, Vol. 45, No. 7, pp. 1800-1805, July 1997.
[11] Richard van Nee and Ramjee Prasad, OFDM Wireless Multimedia Communications, Artech House, 2000.
[12] Charles J. You and J. Henry Horng, “Optimum Frame and Frequency Synchronization for OFDM Systems,” in Proc. IEEE International Conference on Consumer Electronics (ICCE), pp. 226-227, June 2001.
[13] S. Johansson, P. Nilsson, and M. Torkelson, “Implementation of an OFDM Synchronization Algorithm,” Circuits and Systems, 1999. 42nd, vol. 1, pp. 228-231, Aug. 1999.
[14] A. Fort and W. Eberle, “Synchronization and AGC Proposal for IEEE 802.11a Burst OFDM Systems,” Global Telecom. , vol. 3, pp. 1335-1338, Dec. 2003.
[15] B. Yang, K. B. Letaief, R. S. Cheng, and Z. Cao, “An Improved Combined Symbol and Sampling Clock Synchronization Method for OFDM Systems,” Wireless commun. and Network 1999, vol. 3, pp. 1153-1157, Sept. 1999.
[16] N. Mochizuki, Y. Matsumoto, M. Mizoguchi, T. Onizawa, and Y. Matsumato, “A High Performance Frequency and Timing Synchronization Technique for OFDM,” Global Telecom. vol. 6, pp. 3443-3448, Nov. 1998.
[17] S. W. Km and K. H. Tchah, “Performance Analysis of Adaptive Equalizer Designfor OFDM Wireless LAN, ”IEEE Trans. Consum., vol.50, pp.512-516, May 2004.
[18] S. A. Fechtel and A. Blaickner, “Efficient FFT and Equalizer implementation for OFDM Receivers,” IEEE Trans. Commun. , vol. 45, pp. 1104-1107, Nov. 1999.
[19] F. M. Gardner, “Interpolation in digital modems—Part I: Fundamentals,” IEEE Trans. Commun., vol. 41, pp. 502-508, Mar. 1993.
[20] F. M. Gardner, “Interpolation in digital modems—Part II: Implementation and Performance,” IEEE Trans. Commun., vol. 41, pp. 998-1008, June 1993.
[21] V.S. Abhayawardhana, I.J. Wassell, “Residual frequency offset correction for coherentlymodulated OFDM systems in wireless communication,“ in Proc. of the IEEE Vehicular Technology Conference, vol. 2, May 2000, pp. 777-781.
[22] P. Y. Tsai and T. D. Chiueh, “Frequency-domain interpolation-based channel estimation in pilot-aided OFDM systems,” IEEE VTC, Spring, pp. 420- 424, May 2004
[23] Axcera. (1999, Aug. 6). Technical Reference for the RF Engineer from the RF expers: EVM v.s SNR
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top