結合等化與取樣時脈同步雙迴路架構設計

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姓名

陳柏翰(Bo-Han Chen) 查詢紙本館藏

畢業系所

電機工程學系

論文名稱

結合等化與取樣時脈同步雙迴路架構設計
(Joint Equalization and Sampling Clock Synchronization in Dual-Loop Architecture)

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摘要(中)

正交分頻多工技術對於克服傳輸通道的頻率選擇性衰減效應以及符碼際干擾具有良好的效果。然而，傳送與接收端間的非同步效應會破壞正交分頻多工系統之正交性，進而引進子載波間干擾，將會大幅降低系統之效能。
本論文著重在估測並解決正交分頻多工系統中的取樣時脈偏移非同步問題。我們利用基於自動增益與載波回復之頻域等化器中的相位誤差量，估測出取樣時脈偏移所造成之相位旋轉，將此訊息經由我們所提出之雙迴路系統架構來補償取樣時脈偏移。除此之外，我們結合了傳統時域等化器與Farrow內插器電路，利用時域等化器中係數收斂完成後即閒置之電路，達到係數內插器之功能。

摘要(英)

OFDM system has good ability on resisting frequency selective channel fading and inter-symbol interference (ISI). However, non-ideal effects such as synchronization issue between transmitter and receiver will degrade system performance. The orthogonality of OFDM system is destroyed by introducing inter-carrier interference (ICI).
In this thesis, we focus on estimation and compensation methods of sampling clock offset (SCO) effect in an OFDM system. We can estimate phase rotation caused by SCO with phase error information obtained in auto-gain control and carrier recovery based frequency-domain equalizer (AGC-CR FEQ). Then the SCO effect can be compensated in the proposed dual-loop system architecture. Moreover, the conventional time-domain equalizer (TEQ) and Farrow structure interpolator are combined. We occupy idle circuits after coefficients updating in the TEQ to achieve TEQ coefficients interpolation.

關鍵字(中)

★ 正交分頻多工
★ 時域等化器
★ 頻域等化器
★ 取樣時脈偏移

關鍵字(英)

★ TFO
★ FEQ
★ TEQ
★ OFDM

論文目次

摘要 i
Abstract ii
誌謝 iii
目次 iv
圖目錄 vi
表目錄 viii
第一章序論 1
1.1 研究動機 1
1.2 OFDM系統架構 1
1.2.1正交分頻多工(OFDM)調變簡介 1
1.2.2 OFDM數學模型 2
1.2.3 OFDM系統架構 3
1.3 論文架構 4
第二章 OFDM等化與同步架構設計 5
2.1 時域等化器 5
2.1.1最大縮短信號雜訊比(MSSNR)時域等化器 5
2.1.2直角座標系LMS時域等化器 8
2.2 頻域等化器 12
2.2.1直角座標系LMS頻域等化器 12
2.2.2極座標系LMS頻域等化器 14
2.3 取樣時脈偏移同步 17
2.3.1取樣時脈偏移效應 18
2.3.2取樣時脈偏移估測 20
2.3.3取樣時脈偏移補償 21
第三章結合等化器與取樣時脈同步架構設計 29
3.1利用頻域等化器估測取樣時脈偏移 29
3.2利用時域等化器補償取樣時脈偏移 32
3.3結合等化與取樣時脈同步雙迴路架構 37
第四章 OFDM系統模擬 40
4.1 模擬環境 40
4.2 模擬結果 41
第五章電路架構設計與模擬驗證結果 48
5.1 電路架構設計 48
5.2 RTL 模擬驗證結果 54
5.3 FPGA驗證平台 57
5.4 FPGA驗證結果 57
第六章結論與展望 60
參考文獻 61

參考文獻

[1] D.Matiæ,“OFDM as a Possible Modulation Technique for Multimedia Applications in the Range of mm Waves,”TUDTVS, Oct. 1998
[2] A. Peled and A. Ruiz,“Frequency Domain Data Transmission Using Reduced Computational Complex Algorithms.”In Proc. IEEE Int. Conf. Acoust., Speech,
Signal Processing, Pages 964-967, Denver, Co, 1980
[3] A. Majumder and J. Caffery, Jr.,“Power Line Communication: an Overview, IEEE POTENTIALS, OCT/NOV 2004.
[4] Z. Smkkal, P. Silhae and P. Rajmic,“Time Domain Equalization for ADSL Technology and its Optimization”, IEEE, 2003.
[5] G. Ysebaert, K. Van Acker, M. Moonen and B. De Moor, “Constraints in Channel Shortening Equalizer Design for DMT-Based Systems”,ELSEVIER, Jan 2002.
[6] C. Richard Johnson Jr. and William A. Setharess, Telecommunication Breakdown,Prentice Hall, Upper Saddle River, New Jersey, 2004
[7] S. Kourtis,“Optimum Bit Allocation Algorithm for DMT-Based Systems under Minimum Transmitted Power Constraint”, ELECTRONICS LETTERS, Dec 1999, Vol. 35 No.25
[8] Y.M.Lin,“The Channel Equalizer for High Speed Optical Fiber Communications”, CCL Technical Journal, Sep.2005
[9] T. Pollet and M. Peeters, Alcatel,“Synchronization with DMT Modulation”, IEEE Communications Magazine, April 1999.
[10] M. Speth, S. A. Fechtel, G. Fock, and H. Meyr, ”Optimum Receiver Design for Wireless Broad-Band Systems Using OFDM-Part I”, IEEE Transactions on communications, VOL. 47, NO. 11, NOV 1999.
[11] Michael Speth, Stefan A. Fechtel, Gunnar Fock, and Heinrich Meyr,“Optimum Receiver Design for OFDM-Based Broadband Transmission-Part II: A Case Study”,IEEE Transactions on Communications, VOL. 49, NO. 4, April 2001.
[12] F. M. Gardner,“Interpolation in Digital Modems-Part II: Implementation and Performance”, IEEE Transactions on communications, vol.41, no 6, June 1993
[13] M.T. Shiue, S.S. Long, “A Blind Frequency-Domain Equalization Algorithm for OFDM/DMT System Based on AGC and Carrier Recovery,” ITC-CSCC, July 2005
[14] C.F.Wu, M.T.Shiue and C.K.Wang, “Joint Carrier Sychronization and Equalization for Packet-Based OFDM Systems in Multipath Fading Channel”, IEEE Transactions
on Vehicular Technology.April 2009.ppl-5
[15] R.E.Best, Phase-Locked Loops, third ed., Wiley, New Jersey, 2005
[16] S. Moridi and H. Sari, “Analysis of Four Decision-Feedback Carrier Recovery Loops in the Presence of Intersymbol Interference”, IEEE Transactions of Wireless
Communications, vol. COM-33, 1985, pp.543-550
[17] Donnacha Daly, Conor Heneghan, and Anthony D. Fagan, “Minimum Mean-Squared Error Impulse Response Shortening for Discrete Multitone Transceivers”, IEEE Transactions on signal processing, VOL. 52, No. 1, Jan 2004.
[18] F. M. Gardner,“Interpolation in Digital Modems-Part II: Fundamentals”, IEEE Transactions on communications, vol.41, no 4, March 1993
[19] J.J. van de Beek, O. Edfors, M. Sandell, S.K. Wilson and P.O. Borjesson, “On Channel Estimation in OFDM Systems”, in Proc. IEEE Vehicular Technology Conference, Vol.2, July 1995, pp. 815-819
[20] O. Ddfors, J.J. van de Beek, O. Edfors, M. Sandell, S.K. Wilson and P.O. Borjesson,“OFDM Channel Estimation by Singular Value Decomposition”, in Proc. IEEE Vehicular Technology Conference, April 1996, pp. 923-927
[21] D. Matic, N. Petrochilos, A. Trindade, F. Schoute, P. Comono and R. Prasad, “OFDM Synchronisation Based on the Phase Rotation of Sub-carriers”, in Proc. IEEE

指導教授

薛木添(Muh-Tian Shiue)

審核日期

2011-1-17

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