數位電視廣播(DVB-T)在台灣將成為未來無線電視的標準規格。因此，未來對數位電視接收機的需求必將大增。本論文針對DVB-T的標準設計一基頻內接收機。內接收機所要考慮的問題有符碼邊界偏移、載波頻率偏移和取樣時脈偏移等同步問題。除此之外還有通道效應的估測和資料回復的等化問題。在本論文中將一一提出上述問題的解決方法，並提出結合載波同步與等化雙迴路架構的演算法同時解決剩餘載波頻率偏移和通道等化的問題。最後設計硬體架構實現各個演算法電路，和傳統的演算法相比可提升系統效能並節省60%的記憶體。

The European terrestrial broadcasting standard DVB-T has been adopted an official digital TV specification in Taiwan. As a result, the demand for DVB-T receiver will be heightened in the future. In this thesis, we will propose a joint carrier synchronization and equalization algorithm and implement hardware architecture for DVB-T baseband inner receiver. The OFDM inner receiver design should take account of synchronization issue, such as symbol boundary, carrier frequency offset and sampling frequency offset. In addition, the design must also take channel estimation and equalization issues into account. The proposed joint carrier synchronization and equalization algorithm can compensate both carrier frequency offset and channel frequency response at the same time. Finally, we will design the hardware architectures to realize the proposed algorithms. Comparing with the traditional methods, the proposed algorithm can promote the system performance and reduce above 60% storages.

[1] 賴柏州、林志星、魏明照、林世欽，數位電視廣播與製作系統，初版，全華科技圖書股份有限公司，台北市，民國92年。
[2] 賴柏洲、林世欽，數位電視廣播應用與服務訊息，初版，全華科技圖書股份有限公司，台北市，2004年。
[3] 賴柏洲、林世欽，數位電視技術原理，初版，全華科技圖書股份有限公司，台北市，2006年。
[4] D. Mati?, “OFDM as a possible modulation technique for multimedia applications in the range of mm waves,” TUD-TVS, Oct. 1998
[5] A. Peled and A. Ruiz, “Frequency domain data transmission using reduced computational complexity algorithms,” in Proc. IEEE International Conference on ICASSP, vol. 5, April, 1980, pp. 964-967
[6] “Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for digital terrestrial television,” European Telecommunication Standard EN 300 744 V1.5.1, November 2004
[7] M. Engels, Wireless OFDM Systems: How to make them work? , Kluwer academic publishers, 2002
[8] 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, vol. 45, no. 7, July 1997
[9] P. H. Moose, ”A Technique for Orthogonal Frequency Division Multiplexing Frequency Offset Correction”, IEEE Transaction on communications, vol. 42, no. 10, October 1994
[10] J. C. Lin, ”Maximum-Likelihood Frame Timing Instant and Frequency Offset Estimation for OFDM Communication Over a Fast Rayleigh-Fading Channel”, IEEE transactions on vehicular technology, vol. 52, no. 4, July 2003
[11] 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, November 1999
[12] M. Speth, S. A. Fechtel, G. Fock, and H. Meyr, “Optimum Receiver Design for Wireless Broadband Transmission – Part II: A Case Study,” IEEE Transactions on Communications, vol. 49, no. 4, April 2001
[13] F. Daffara and O. Adami, “A new frequency detector for orthogonal multicarrier transmission techniques,” IEEE Vehicular Technology Conference, vol. 2, July 1995
[14] C. T. Chen, “Design of Synchronization for DVB-T Baseband Receiver,” Master Thesis, Department of Electronics Engineering, National Central University, Jhongli, Taiwan, October 2007
[15] F. Tufvesson and T. Maseng, “Pilot assisted channel estimation for OFDM in mobile cellular systems,” IEEE Vehicular Technology Conference, vol. 3, May 1997
[16] T. Pollet and M. Peeters and Alcatel, “Synchronization with DMT Modulation,” IEEE Communications Magazine, vol. 37 April 1999
[17] 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
[18] O. Ddfors, M. Sandell, J. J. van de Beek, 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
[19] T. A. Lin, C. Y. Lee, “Predictive equalizer design for DVB-T system,” IEEE ISCAS , vol.2, May 2005, pp. 940-943
[20] Y. H. Ma, “Channel equalizer for DVB-T/H System,” Master Thesis, Department of Electronics Engineering, National Chiao Tung University, Hsinchu, Taiwan, July 2006
[21] S. Haykin, Adaptive Filter Theory, fourth ed., Prentice Hall, New Jersey, 2002
[22] R. E. Best, Phase-Locked Loops, third ed., McGraw-Hill, 1997
[23] F. M. Gardner, Phaselock Techniques, third ed., Wiley, New Jersey, 2005
[24] F. M. Gardner, “Interpolation in Digital Modems-Part I: Fundamentals,” IEEE Transactions on communications, vol. 41, no 4, March 1993
[25] F. M. Gardner, “Interpolation in Digital Modems-Part II: Implementation and Performance,” IEEE Transactions on communications , vol. 41, no 6, June 1993
[26] M. T. Shiue and S. S. Long, “A Blind Frequency-Domain Equalization Algorithm for OFDM/DMT Systems Based on AGC and Carrier Recovery,” ITC-CSCC, July 2005
[27] J. H. Lin, “FPGA Realization of AGC-CR and 2D/1D Channel Equalization Techniques for DVB-T/H OFDM System,” Master Thesis, Department of Electronics Engineering, National Central University, Jhongli, Taiwan, July 2007
[28] 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
[29] L. Kuang, Z. Ni, J. Lu and J. Zheng, “A Time-Frequency Decision-Feedback Loop for Carrier Frequency Offset Tracking in OFDM Systems,” IEEE Transactions on Wireless Communications, vol. 4, no.2, March 2005, pp. 367-373
[30] J. E. Volder, “The CORDIC trigonometric computing technique,” IRE Transactions on Electronic Computers, vol. EC-8, no. 3, September 1959
[31] R. Andraka “A survey of CORDIC algorithms for FPGA based computers,” International Symposium on Field Programmable Gate Arrays, 1998
[32] Y. H. Hu, “The Quantization Effects of the CORDIC Algorithm,” IEEE Transactions on Signal Processing, vol. 40, no. 4, April 1992
[33] C. F. Wu, M. T. Shiue and C. K. Wang, “Joint Carrier Synchronization and Equalization for Packet-Based OFDM Systems in Multipath Fading Channel,” submitted to IEEE Transactions on Vehicular Technology