数字视频广播COFDM传输系统中的编解码技术
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摘要
本文介绍了高清晰度电视发展的概况，阐述了COFDM传输原理和数字高清晰度电视地面广播系统的COFDM实现方案。在对COFDM传输系统中基于串行级联码的信道编解码性能进行Matlab软件仿真的基础上，完成了系统中FEC模块的Quartus仿真和FPGA硬件电路的实现。最后在此基础上，结合系统调试提出了用并行级联的Turbo码来替代串行级联码的方案，并通过性能仿真探讨了该方案实施的可行性。
Based on an overview of HDTV, this paper gives the COFDM transmission principle and DVB_T COFDM scheme.On the basis of theory about channel coding, simulation of the performance on SCCC-based with Matlab has been done and a design scheme based on FPGA proposed.This paper makes the simulation of circuits with Quartus and FPGA-hardware into reality too. Finally,Turbo coding applicated in COFDM is discussed and its feasibility also tested by lots of performance analysis.
Based on an overview of HDTV, this paper gives the COFDM transmission principle and DVB_T COFDM scheme.On the basis of theory about channel coding, simulation of the performance on SCCC-based with Matlab has been done and a design scheme based on FPGA proposed.This paper makes the simulation of circuits with Quartus and FPGA-hardware into reality too. Finally,Turbo coding applicated in COFDM is discussed and its feasibility also tested by lots of performance analysis.
引文
[1] ETSI: EN300744 Digital Video Broadcasting;Framing structure,channel coding and modulation for digital terrestrial television
[2] Ming-hwa Chan, Wen-Ta Lee. "IC DESIGN OF AN ADAPTIVE VITERBI DECODER." IEEE Transaction on Consumer Electronics. Vol.42． NO. 1 .February 1996
[3] M.KIVIOJA J.ISOAHO L.VANSKA "Design and Implementation of Viterbi Decoder with FPGAS." Proc.IEEE 47thVTC,Phoenix,USA,May,1997,pp.2089-2093
[4] Yufei W . " Implemention of Parallel and Serial Concetenated Convolutional Codes." Dissertion for Doctor of philosophy in Electrical Engineering.
[5] S. Benedetto, D. Divsalar, G. Montorsi, and F. Pollara, "Parallel concatenated trellis codedmodulation," Proc, IEEE Int. Conf. on Commun., pp. 974-8, May 1996
[6] P. Robertson and T. Worz, "Coded modulation scheme employing turbo codes," ElectronicsLetters, vol. 31, pp. 1546-7, Aug. 31st, 1995．
[7] J. Proakis, "Digital Communications", third edition. New York: McGraw-Hill, Inc.,1995．
[8] C. Berrou, A. Glavieux and P. Thitimajshima, "Near Shannon limit error-correcting codingand decoding: Turbo-codes", Proc. IEEE ICC-93, pp. 1064-1070．
[9] J. Hagenauer and L. Papke, "Decoding turbo codes with the soft-output Viterbi algoritlim(SOVA)," Proc, IEEE Int. Symp. on Inform. Theory, p. 164, June 1994．
[10] Lamine Sylla, Paul Fortier, Huu Tue Huynh. "Performance of COFDM Using Turbo Codes"
[11] C. Berrou, A. Glavieux, and P. Thitimajshima, "Near Shannon Limit Error-Correcting Coding: Turbo Codes," Proc. 1993 IEEE ICC, Geneva, Switzerland,pp. 1064-1070, May 1993．
[12] S. Benedetto, D. Divsalar, G. Montorsi, and F. Pollara, "Serial Concatenated Trellis Coded Modulation with Iterative Decoding: Design and Performance," Submitted to IEEE Comm. Theory Mini Conference
[13] D. Divsalar and F. Pollara, "On the Design of Turbo Codes," The elecommu-nications and Data Acquisition Progress Report 42-123, July September 1995, Jet Propulsion Laboratory,Pasadena, California, pp. 99-12 1,
[14] AnsLab IP Core Ans_Viterbi_SerVersion 1． 1: July 01,2000
[15] S. Benedetto, D. Divsalar, G. Montorsi, F. Pollara, "Soft-Output Decoding Algorithms for Continuous Decoding of Parallel Concatenated Convolutional Codes", Proc. ICC'96, Dallas, USA, pp. 112-117, June 1996.
[16] Johann Briffa." Interleavers for Turbo Codes." A dissertation submitted in ful_lment of the requirements for the award of Master of Philosophy of the University of Malta OCTOBER 1999
[17] Wooncheol Hwang,Klseon Kim. Performance analysis of OFDM on the shadowed mutipath channels. IEEE Trans. On Consumer Electronics. Vol.44,No.4,Nov. 1998
[18] Leonard J.Cimini,JR.. Analysis and simulation of a digital mobile channel using orthogonal frequency division multiplexing. IEEE Trans. On Communications, vol. com-33, No.7, July., 1985
[19] G. Feygin, P. Chow, P.G. Gulak, J. Chappel, G. Goodes, O. Hall, A. Sayes, S.Singh, M. Smith, S. Wilton, "A VLSI Implementation of a Cascade Viterbi Decoder with Traceback", ISCAS'93, Chicago, Vol. 3, pp. 1945-1948.
[20] MegaCore Function Viterbi Compiler. User Guide of Altera. November 2001
[21] MegaCore Function Reed-Solomon Compiler .User Guide of Altera. August 2001
[22] Implementing an IEEE Std. 802.16-Compliant FEC Decoder. Datasheet of Altera.
[23] 王新梅、肖国镇，纠错码——原理与方法，1996
[24] 陈军，软判决译码的研究，西安电子科技大学博士研究生学位论文，1999
[25] 王立宁、乐光新、詹菲，MATLAB与通信仿真，人民邮电出版社，1999．
[26] 刘宝琴，ALTERA可编程逻辑器件及其应用，清华大学出版社，1995．
[27] 李建东、杨家玮，个人通信，人民邮电出版社，1998．
[27] 曹志刚、钱亚生，现代通信原理，清华大学出版社，1992．
[28] 侯伯亨等，VHDL硬件描述语言与数字逻辑电路设计，西安电子科技大学出版社，1997．
[29] 樊昌信、徐炳祥、詹道庸等，通信原理，国防工业出版社，1988．
[2] Ming-hwa Chan, Wen-Ta Lee. "IC DESIGN OF AN ADAPTIVE VITERBI DECODER." IEEE Transaction on Consumer Electronics. Vol.42． NO. 1 .February 1996
[3] M.KIVIOJA J.ISOAHO L.VANSKA "Design and Implementation of Viterbi Decoder with FPGAS." Proc.IEEE 47thVTC,Phoenix,USA,May,1997,pp.2089-2093
[4] Yufei W . " Implemention of Parallel and Serial Concetenated Convolutional Codes." Dissertion for Doctor of philosophy in Electrical Engineering.
[5] S. Benedetto, D. Divsalar, G. Montorsi, and F. Pollara, "Parallel concatenated trellis codedmodulation," Proc, IEEE Int. Conf. on Commun., pp. 974-8, May 1996
[6] P. Robertson and T. Worz, "Coded modulation scheme employing turbo codes," ElectronicsLetters, vol. 31, pp. 1546-7, Aug. 31st, 1995．
[7] J. Proakis, "Digital Communications", third edition. New York: McGraw-Hill, Inc.,1995．
[8] C. Berrou, A. Glavieux and P. Thitimajshima, "Near Shannon limit error-correcting codingand decoding: Turbo-codes", Proc. IEEE ICC-93, pp. 1064-1070．
[9] J. Hagenauer and L. Papke, "Decoding turbo codes with the soft-output Viterbi algoritlim(SOVA)," Proc, IEEE Int. Symp. on Inform. Theory, p. 164, June 1994．
[10] Lamine Sylla, Paul Fortier, Huu Tue Huynh. "Performance of COFDM Using Turbo Codes"
[11] C. Berrou, A. Glavieux, and P. Thitimajshima, "Near Shannon Limit Error-Correcting Coding: Turbo Codes," Proc. 1993 IEEE ICC, Geneva, Switzerland,pp. 1064-1070, May 1993．
[12] S. Benedetto, D. Divsalar, G. Montorsi, and F. Pollara, "Serial Concatenated Trellis Coded Modulation with Iterative Decoding: Design and Performance," Submitted to IEEE Comm. Theory Mini Conference
[13] D. Divsalar and F. Pollara, "On the Design of Turbo Codes," The elecommu-nications and Data Acquisition Progress Report 42-123, July September 1995, Jet Propulsion Laboratory,Pasadena, California, pp. 99-12 1,
[14] AnsLab IP Core Ans_Viterbi_SerVersion 1． 1: July 01,2000
[15] S. Benedetto, D. Divsalar, G. Montorsi, F. Pollara, "Soft-Output Decoding Algorithms for Continuous Decoding of Parallel Concatenated Convolutional Codes", Proc. ICC'96, Dallas, USA, pp. 112-117, June 1996.
[16] Johann Briffa." Interleavers for Turbo Codes." A dissertation submitted in ful_lment of the requirements for the award of Master of Philosophy of the University of Malta OCTOBER 1999
[17] Wooncheol Hwang,Klseon Kim. Performance analysis of OFDM on the shadowed mutipath channels. IEEE Trans. On Consumer Electronics. Vol.44,No.4,Nov. 1998
[18] Leonard J.Cimini,JR.. Analysis and simulation of a digital mobile channel using orthogonal frequency division multiplexing. IEEE Trans. On Communications, vol. com-33, No.7, July., 1985
[19] G. Feygin, P. Chow, P.G. Gulak, J. Chappel, G. Goodes, O. Hall, A. Sayes, S.Singh, M. Smith, S. Wilton, "A VLSI Implementation of a Cascade Viterbi Decoder with Traceback", ISCAS'93, Chicago, Vol. 3, pp. 1945-1948.
[20] MegaCore Function Viterbi Compiler. User Guide of Altera. November 2001
[21] MegaCore Function Reed-Solomon Compiler .User Guide of Altera. August 2001
[22] Implementing an IEEE Std. 802.16-Compliant FEC Decoder. Datasheet of Altera.
[23] 王新梅、肖国镇，纠错码——原理与方法，1996
[24] 陈军，软判决译码的研究，西安电子科技大学博士研究生学位论文，1999
[25] 王立宁、乐光新、詹菲，MATLAB与通信仿真，人民邮电出版社，1999．
[26] 刘宝琴，ALTERA可编程逻辑器件及其应用，清华大学出版社，1995．
[27] 李建东、杨家玮，个人通信，人民邮电出版社，1998．
[27] 曹志刚、钱亚生，现代通信原理，清华大学出版社，1992．
[28] 侯伯亨等，VHDL硬件描述语言与数字逻辑电路设计，西安电子科技大学出版社，1997．
[29] 樊昌信、徐炳祥、詹道庸等，通信原理，国防工业出版社，1988．