跳到主要內容

臺灣博碩士論文加值系統

(35.175.191.36) 您好!臺灣時間:2021/07/31 01:22
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

: 
twitterline
研究生:吳志騏
研究生(外文):Chih-ChiWu
論文名稱:多輸入多輸出正交分頻多工系統中非理想效應之估測與補償
論文名稱(外文):Estimation and Compensation of Non-Ideal Effects in MIMO-OFDM Systems
指導教授:郭致宏郭致宏引用關係
指導教授(外文):Chih-Hung Kuo
學位類別:碩士
校院名稱:國立成功大學
系所名稱:電機工程學系碩博士班
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:2012
畢業學年度:100
語文別:中文
論文頁數:69
中文關鍵詞:多輸入多輸出正交分頻多工系統載波頻率偏移IQ不平衡
外文關鍵詞:MIMO-OFDMCarrier Frequency OffsetIQ imbalance
相關次數:
  • 被引用被引用:0
  • 點閱點閱:2499
  • 評分評分:
  • 下載下載:15
  • 收藏至我的研究室書目清單書目收藏:0
本論文提出一個應用於多輸入多輸出正交分頻多工系統中兩階段的載波頻率偏移與IQ不平衡的估測補償演算法並實現於可程式化處理器上。利用兩段重複的長訓練序列,第一階段補償載波頻率偏移與接收端天線IQ 不平衡,此外,藉由Alamouti 空時區塊編碼的結構性質,提出第二階段傳送端天線IQ不平衡的補償方法。利用可程式化處理器來完成演算法並實現於FPGA 板上,根據實現結果,處理器頻率最快可達55.7MHz。可支援傳輸速率達80Mbps。在演算法效能上,我們提出的系統位元錯誤率曲線可達到近似於理想的系統。

This thesis presents a two-stage algorithm of estimation and compensation of the Carrier Frequency Offset(CFO) and the IQ imbalance in MIMO-OFDM systems and its implementation in a programmable processor. Base on two repetitive identical training sequences, the receiver IQ imbalance is compensated along with CFO in the first stage. The transmitter IQ imbalance is compensated by taking advantage of structure of Alamouti space-time block codes. We map algorithm onto programmable processor that is implemented in FPGA. As our implementation result, the processor frequency can run up to 55.7MHz. The system can support transmission speeds up to 80Mbps. Experimental results show Bit Error Rate(BER) curve of the proposed system is close to that of the ideal system.
中文摘要 ..............................................I
Abstract ............................................ II
誌謝 ............................................... III
目錄 ................................................ IV
圖目錄 .............................................. VI
表目錄 .............................................. IX
第一章 緒論 .......................................... 1
1-1 研究動機 ......................................... 2
1-2 研究貢獻 ......................................... 3
1-3 論文架構 ......................................... 4
第二章 研究背景 ...................................... 5
2-1 正交分頻多工系統 ................................. 6
2-1-1 正交分頻多工調變 ............................... 7
2-1-2 保護區間與循環字首 ............................. 9
2-2 多輸入多輸出技術 ................................ 11
2-2-1 空時區塊編碼 .................................. 12
2-3 非理想效應 ...................................... 15
2-3-1 IQ 不平衡 ..................................... 16
2-3-2 載波頻率偏移 .................................. 25
2-3-3 IQ 不平衡與載波頻率偏移聯合數學模型 ........... 28
2-4 相關文獻介紹 .................................... 30
2-4-1 MIMO-OFDM 系統之IQ 不平衡補償演算法 ........... 31
2-4-2 OFDM 系統中CFO 與IQ 不平衡聯合補償演算法 ...... 32
第三章 聯合估測及補償演算法 ......................... 36
3-1 IEEE 802.11n 之訊框架構 ......................... 36
3-2 接收端IQ 不平衡與CFO 聯合估測演算法 ............. 38
3-3 傳送端IQ 不平衡估測補償演算法 ................... 41
第四章 可程式化處理器與演算法實驗結果 ............... 49
4-1 可程式化處理器架構與實現 ........................ 49
4-2 演算法實驗結果 .................................. 52
第五章 結論與未來展望 ............................... 64
5-1 結論 ............................................ 64
5-2 未來展望 ........................................ 65
參考文獻 ............................................ 66
[1] J. Heiskala and J. Terry, OFDM Wireless LANs: A Theoretical and Practical Guide. Indianapolis, Indiana: SAMS, 2001.
[2] John A. C. Bingham, ADSL, VDSL, and Multicarrier Modulation, Wiley-Interscience., 2000.
[3] IEEE Std 802.11a-1999-Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications: High-Speed Physical Layer in the 5 GHz Band, Dec., 1999.
[4] IEEE Std 802.11n-2009-Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications Amendment 4: Protected Management Frames, Oct., 2009.
[5] C.-L. Liu, “Impacts of I/Q imbalance on QPSK-OFDM-QAM detection ,IEEE Transactions on Consumer Electronics, vol. 44, no. 3, pp. 984-989, Aug. 1998.
[6] A. Tarighat, R. Bagheri, and A. H. Sayed, “Compensation schemes and performance analysis of IQ imbalances in OFDM receivers, IEEE Transactions on Signal Processing, vol. 53, no. 8, pp. 3257-3268, Aug. 2005.
[7] A. Tarighat and A. H. Sayed, “MIMO OFDM Receivers for Systems With IQ Imbalances, IEEE Transactions on Signal Processing, vol. 53, no. 9, pp. 3583-3596, Sep. 2005.
[8] A. Tarighat and A. H. Sayed, “OFDM systems with both transmitter and receiver IQ imbalances, IEEE 6th Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2005.
[9] J. Tubbax et al., “Joint compensation of IQ imbalance and frequency offset in OFDM systems, IEEE Global Telecommunications Conference(GLOBECOM), 2003, pp. 2365-2369.
[10] F. Horlin, A. Bourdoux, and L. Perre, “Low-Complexity EM-based Joint Acquisition of the Carrier Frequency Offset and IQ Imbalance, IEEE Transactions on Wireless Communications, vol. 7, no. 6, pp. 2212-2220, June 2008.
[11] J.-R. Liang and C.-H. Kuo, “LS-based joint estimation of carrier frequency offset and IQ imbalance in OFDM systems, International Symposium on Next-Generation Electronics (ISNE), 2010, pp. 52-55.
[12] D. Tandur and M. Moonen, “Joint Adaptive Compensation of Transmitter and Receiver IQ Imbalance Under Carrier Frequency Offset in OFDM-Based Systems, IEEE Transactions on Signal Processing, pp. 5246-5252, Nov. 2007.
[13] Jheng-Ru Liang, Joint Estimation and Compensation of Carrier Frequency Offset and I/Q Imbalance in OFDM Systems, Master Thesis, Dept. EE, National Cheng Kung University, 2010.
[14] F. Horlin and A. Bourdoux, “Comparison of the sensitivity of OFDM and SC-FDE to CFO, SCO and IQ imbalance, 3rd International Symposium on Communications, Control and Signal Processing(ISCCSP), 2008.
[15] R. W. Chang, “Synthesis of band-limited orthogonal signals for multi-channel data transmission, Bell System Technical Journal, pp. 1775-1796, Dec. 1966.
[16] S. B. Weinstein and Paul Ebert, “Data Transmission by Frequency-Division Multiplexing Using the Discrete Fourier Transform, IEEE Transactions on Communication Technology, vol. 19, no. 5, pp. 628-634, Oct. 1971.
[17] S. M. Alamouti, “A simple Transmit Diversity Technique for Wireless Communications, IEEE Journal on Selected Areas in Communications, vol.16, no. 8, Oct. 1998.
[18] IEEE Std 802.16e-2005-Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems Amendment 2: Physical and Medium Access Control Layers for Combined Fixed and Mobile Operation in Licensed Bands and Corrigendum 1, Feb. , 2006.
[19] B. Razavi, RF Microelectronics. NJ: Prentice Hall, 1998.
[20] F. Horlin and A. Bourdoux, Digital Compensation for Analog Front-Ends: A New Approach to Wireless Transceiver Design. MA: John Wiley, 2008.
[21] Radio broadcasting systems: Digital Audio Broadcasting (DAB) to mobile, portable and fixed receivers. ETS 300 401, ETSI-European Telecommunication Standards Institute, Feb. 1995.
[22] C.-K. Liang and K.-C. Chen, “A Green Software-Defined Communication Processor for Dynamic Spectrum Access, IEEE 21st International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC), 2010, pp.774-779.
[23] W. Q. Lu, S. Zhao, X. F. Zhou, J. Y. Ren and G.E. Sobelman, “Reconfigurable baseband processing architecture for communication, IET Computers & Digital Techniques, vol. 5, no. 1, pp. 63-72, 2011.
[24] Ada S. Y. Poon, “An Energy-Efficient Reconfigurable Baseband Processor for Wireless Communications, IEEE Transactions on Very Large Scale Integration (VLSI) Systems, vol. 15, no. 3, pp. 319-327, March 2007.
[25] J.-M. Jou, Y.-L. Lee, C.-Y. Lin and C.-M. Sun, “A Novel Reconfigurable Computation Unit for DSP Applications, IEEE Computer Society Annual Symposium on VLSI(ISVLSI), 2007, pp. 437-444.
[26] B. Narasimhan, S. Narayanan, H. Minn and N. Al-Dhahir,
“Reduced-Complexity Baseband Compensation of Joint Tx/Rx I/Q Imbalance in Mobile MIMO-OFDM, IEEE Transactions on Wireless Communications, vol. 9, no. 5, pp. 1720-1728, May 2010.
[27] L. He, S. Ma, Y.-C. Wu, Y. Z., T.-S. Ng and H. V. Poor, “Pilot-Aided IQ Imbalance Compensation for OFDM Systems Operating Over Doubly Selective Channels, IEEE Transactions on Signal Processing, vol. 59, no. 5, pp. 2223-2233, May 2011.
連結至畢業學校之論文網頁點我開啟連結
註: 此連結為研究生畢業學校所提供,不一定有電子全文可供下載,若連結有誤,請點選上方之〝勘誤回報〞功能,我們會盡快修正,謝謝!
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top
無相關期刊