TETRA数字集群通信系统多载波调制技术的研究
|
摘要
TETRA数字集群移动无线通信系统是ETSI(欧洲通信标准协会)为了满足欧洲各国的专业部门对移动通信的需要而设计、制定统—标准的开放性系统。为了满足高速数据传输和适用基于IP的高速多媒体应用,TETRA标准发展出TETRAII,其物理层采用了一系列先进的技术,其中调制技术采用了基于滤波器组的多载波调制滤波多音调制FMT。TETRA系统在我国公安、交通运输等部门得到了广泛应用,但是目前设备和技术都被国外垄断,设备引入价格昂贵,限制了我国数字集群系统的持续发展。所以自主研发TETRA系统具有重要的理论和现实意义。
本文主要研究FMT调制技术及其信道均衡和估计。论文研究了FMT调制基本原理以及滤波器组在多载波调制中的应用,重点研究了非严格采样FMT调制的有效实现方式,仿真分析了非严格采样FMT在AWGN下的误比特性能,并与OFDM进行了比较。论文研究了FMT系统子信道等效,得出在一定假设条件下,输出信号是输入信号与传输信道频率响应的乘积,以此结论采用了后置式DFE均衡方式,仿真分析了基本DFE、postDFE以及分别基于MMSE和迫零准则的线性均衡算法,仿真结果表明单抽头频域均衡虽然性能稍差于基本DFE,但计算量小更具实用性。论文研究了TETRA中导频符号的插入方式,并以此结合基于导频的信道估计算法,利用二维线性插值和时域贝叶斯估计频域线性插值两种算法估计信道,仿真表明,基于时域贝叶斯估计频域线性插值的算法性能更好。
TETRA digital mobile radio communication system is designed by the European Telecommunications Standards Institute (ETSI) to satisfy the require from Private Mobile Radio sectors in Europe. TETRA standard has developed TETRA Release2which is suitable for IP-based high-speed multimedia applications. TETRA Release2adopts a set of up-to-date technologies. The physical layer adopts filter-bank-based multicarrier modulation Filtered Multitone Modulation (FMT). TETRA system has been used widely in China's public security, transportation and so on. But the equipments and technologies are monopolized by foreign countries. That makes the costs too expensive and limits the continued development of digital trunking system in our country. So developing TETRA independently has important significance both in theoretical and practical.
This paper foruses on FMT modulation technology and its channel equalization and estimation. The fundamental of FMT modulation and the implementation of the filter banks in the multi-carriers modulation have been researched. Then paper presents the effective achieve way of non-stricted sampled FMT modulation, and analyzes its BER performance which is also be compared to OFDM in the AWGN. After studied FMT subchannels, paper concludes that the output signal is the product of the input signal and the frequency response of the transmitted channel under specific conditions. As a result, paper uses the post DMT in channel equalization, and analyzes the basic DFE, post DFE and two different linear equalization algorithms which are respectively based on MMSE and zero-forcing criterion through stimulation. The result of the stimulation presents the performance of single tap frequency domain equalization is worse than base DFE, but it has less computation and more practical. At last, paper researches on the inset mode of pilot signal in TETRA. And paper combines this mode to use two different channel algorithms, one is two-dimensional linear interpolation and the other is bayesian estimation in time domain and linear interpolation in frequency domain. The result of stimulation indicates the latter one has better performance.
本文主要研究FMT调制技术及其信道均衡和估计。论文研究了FMT调制基本原理以及滤波器组在多载波调制中的应用,重点研究了非严格采样FMT调制的有效实现方式,仿真分析了非严格采样FMT在AWGN下的误比特性能,并与OFDM进行了比较。论文研究了FMT系统子信道等效,得出在一定假设条件下,输出信号是输入信号与传输信道频率响应的乘积,以此结论采用了后置式DFE均衡方式,仿真分析了基本DFE、postDFE以及分别基于MMSE和迫零准则的线性均衡算法,仿真结果表明单抽头频域均衡虽然性能稍差于基本DFE,但计算量小更具实用性。论文研究了TETRA中导频符号的插入方式,并以此结合基于导频的信道估计算法,利用二维线性插值和时域贝叶斯估计频域线性插值两种算法估计信道,仿真表明,基于时域贝叶斯估计频域线性插值的算法性能更好。
TETRA digital mobile radio communication system is designed by the European Telecommunications Standards Institute (ETSI) to satisfy the require from Private Mobile Radio sectors in Europe. TETRA standard has developed TETRA Release2which is suitable for IP-based high-speed multimedia applications. TETRA Release2adopts a set of up-to-date technologies. The physical layer adopts filter-bank-based multicarrier modulation Filtered Multitone Modulation (FMT). TETRA system has been used widely in China's public security, transportation and so on. But the equipments and technologies are monopolized by foreign countries. That makes the costs too expensive and limits the continued development of digital trunking system in our country. So developing TETRA independently has important significance both in theoretical and practical.
This paper foruses on FMT modulation technology and its channel equalization and estimation. The fundamental of FMT modulation and the implementation of the filter banks in the multi-carriers modulation have been researched. Then paper presents the effective achieve way of non-stricted sampled FMT modulation, and analyzes its BER performance which is also be compared to OFDM in the AWGN. After studied FMT subchannels, paper concludes that the output signal is the product of the input signal and the frequency response of the transmitted channel under specific conditions. As a result, paper uses the post DMT in channel equalization, and analyzes the basic DFE, post DFE and two different linear equalization algorithms which are respectively based on MMSE and zero-forcing criterion through stimulation. The result of the stimulation presents the performance of single tap frequency domain equalization is worse than base DFE, but it has less computation and more practical. At last, paper researches on the inset mode of pilot signal in TETRA. And paper combines this mode to use two different channel algorithms, one is two-dimensional linear interpolation and the other is bayesian estimation in time domain and linear interpolation in frequency domain. The result of stimulation indicates the latter one has better performance.
引文
[1]ETSI EN 300 392-2 v3.2.1 Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 2: Air Interface (AI)
[2]张小艳.王彬TETRA2子适应调制解调系统性能分心.通信技术.2010.第3期.37-39
[3]张小艳TETRA2系统子适应调制解调技术的研究.[学位论文].哈尔滨工业大学.2009
[4]C.Razzell.TETRA Radio Terminal Design: Technical Challenges of the Physical Layer.Telecommunications.Fifth IEE Conference.1995.342-348
[5]T. D. Memon.W. Ghangro.B. S. Chowdhry and A. A. Shaikh.Quadrature Phase Shift Keying modulator & demodulator for Wireless Modem.Computer, Control and Communication. 2nd International Conference on 17-18,2009.pp.1-6
[6]Giovanni Cherubini.Eleftheriou. E.Olcer. S, Cioffi. J.Filter Bank Modulation Techniques for Very High-Speed Digital Subscriber Lines. IEEE Comm. Mag.vol.38, pp.98-104.May 2000.
[7]G. Cherubini.E. Eleftherou and S. Olcer.Filtered multitone modulation for VDSL.Proc. IEEE Globecom'99, Rio de Janeiro, Brazil, Dec.1999, pp.1139-1144.
[8]Giovanni Cherubini.Eleftheriou. E.Olcer. S.Filetered Multitone Modulation for Very High-speed Digital Subscriber Lines.IEEE JSAC.pp.1016-1028. June 2002.
[9]Tonello, A.M.Pecile,F.A Filtered Multitone Modulation Modem for Multiuser Power Line Communication with an Efficient Implementation.Power Line Communications and Its Applications.ISPLC'07.IEEE International Symposium.2007.155-160
[10]Andrea M. Tonello.Time Domain and Frequency Domain Implementations of FMT Modulation Architectures.Proc. IEEE Inernational Conference on Acoustics, Speech and Signal Processing (ICASSP 2006).Toulouse. vol.4, pp.625-628.Mar.2006.
[11]Andrea M. Tonello. Perfomance Limits for Filtered Multitone Modulation in Fading Channels. IEEE Tr. Wireless Comm.pp.2121.Sep.2002.
[12]Bahram Borna.Timothy N.Davidson.Efficient Design of FMT Systems.IEEE Transactions on Communications.2006.Vol.54.794-797
[13]张丙峰.朱维红.高振明.滤波多音调制系统的滤波器优化设计.山东大学学报(理学版).2007.第5期.19-23
[14]朱维红.张丙峰.高振明.滤波多音调制系统容量及滤波器设计.山东大学学报(理学版).2007.第1期.49-54
[15]许晓荣.郑宝玉.FMT滤波器组设计与性能分析.南京邮电大学学报(自然科学版).2008.第3期.77-82
[16]张灿.高振明.FMT系统中基于最小均方误差法的滤波器组优化设计.电子技术应用.2006.第6期.118-120
[17]Benvenuto. N.Tomasin. S and Tomba. L.Receiver architecture for FMT broadband wireless systems.Vehicular Technology Conference.IEEE VTS 53rd.2001.643-647
[18]Benvenuto. N.Tomasin. S and Tomba. L.Equalizaton Methods in OFDM and FMT Systems for Broadband Wireless Communications.IEEE TCOMM.2002.1413-1418
[19]Joao Gomes.Milica Stojanovic.Performance Analysis of Filtered Multitone Modulation Systems for Underwater Communication.OCEANS 2009.MTS/IEEE Biloxi-Marine Technology for Our Future: Global and Local Challenges.1-9
[20]Inaki Berenguer. Ian J.Wassell. Efficient FMT Equalization in Outdoor Broadband Wireless Systems. Proc. IEEE International Symposium on Advances in Wireless Communications.Victoria.Canada.2002.
[21]钟华.郑林华.金国平.丁宏.严格采样FMT系统频域均衡算法.电路与系统学报.2010.第3期.54-58
[22]钟华.郑林华.金国平.基于最大比特速率准则的FMT频域均衡算法.电子与信息学报.2010.第6期.1429-1434
[23]钟华.滤波多音调制(FMT)系统均衡技术研究.[学位论文].国防科学技术大学.2010
[24]张丙峰.基于宽带无线信道的多载波调制理论与技术仿真.[学位论文].山东大学.2008
[25]陈悦.朱维红.高振明.李金海.一种FMT系统内的MMSE-DFE均衡方法及其性能研究.信号处理.2005.第1期.31-34
[26]孙巧云.滤波多音调制系统中的均衡技术研究.[学位论文].山东大学.2006
[27]GuiXia Kang.M. Weckerle and E. Costa.Space-time Joint Channel Estimation in Filtered Multi-tone based Multi-carrier Multi-branch system. IEEE WCNC'04.2004.1844-1849.
[28]魏慧玲.高振明.朱维红等.FMT系统中信道估计的分析和仿真.山东大学学报(理学版).2005.第6期.62-65
[29]胡兰雨.高振明.朱维红.张灿.孙巧云.基于PN码导频的FMT信道估计方法.山东大学学报(理学版).2006.01期.120-124.
[30]胡兰雨.滤波多音调制系统中的信道估计和均衡技术研究.[学位论文].山东大学.2006
[31]金国平.钟华.郑林华.FMT频域信道估计算法的研究及其性能分析.计算机工程.10期.2009
[32]金国平.滤波多音调制技术(FMT)中信道估计和同步技术研究[学位论文].国防科技大学.2008
[33]金国平.钟华.郑林华.FMT系统中一种新的信道估计算法.信号处理.2009.第5期.811-815.
[34]Harris, F.J. Dick, C.Rice, M.Digital receivers and transmitters using polyphase filter banks for wireless communications.Microvwave Theory and Techniques. IEEE Transactions.Vol.51.1395-1412
[35]陶然.张惠云.王越著.多抽样率数字信号处理理论及其应用.清华大学出版社.2007.4
[36]张登银.邓宝玉.广义正交传输系统及其高效实现方法.通信学报.2002.第12期.102-109
[37]C. Richard Johnson.Philip Schniter.Thomas J. Endres.James D. Behm.Donald R. Brown.Raul A. Casas.Blind Equalization Using the Constant Modulus Criterion: A Review.Proceedings of the IEEE. Vol.86.pp.1927-1950.Oct.1998
[38]J. M. Cioffi.G. P. Dudevoir. M. V. Eyugoblu.G. D. Forney.MMSE decision-feedback equalizers and coding Part I: Equalization results.IEEE Trans. Commun.vol.43.pp.2582-2594.Oct.1995
[39]ETSI TR 102 580 v1.1.1 Terrestrial Trunked Radio (TETRA); Release 2; Designer's Guide; TETRA High-Speed Data (HSD); TETRA Enhanced Data Service (TEDS)
[40]M. Nouri.D. Ball.M. Rayne.V. Lottici.R. Reggiannini and M. Carta.TEDS:a High Speed Digital Mobile Communication Air Interface for Professional Users Part Ⅰ:Overview of Physical Layer. Vehicular Technology Conference.2007.pp:959-963.
[41]M. Nouri.V. Lottici.R. Reggiannini.D. Ball and M. Rayne.TEDS:a High Speed Digital Mobile Communication Air Interface for Professional Users. Vehicular Technology Magazine.IEEE. Vol.1.2006. pp.32-42.
[42]Steven M. Kay.罗鹏飞等译.统计信号处理基础—估计与检测理论.北京电子工业出版社.2006.7
[43]Matthias Patzold著.陈伟译.移动衰落信道.北京电子工业出版社.2009.1
[44]ETSI ETR 300-1 Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Designers' guide; Part 1:Overview, technical description and radio aspects
[2]张小艳.王彬TETRA2子适应调制解调系统性能分心.通信技术.2010.第3期.37-39
[3]张小艳TETRA2系统子适应调制解调技术的研究.[学位论文].哈尔滨工业大学.2009
[4]C.Razzell.TETRA Radio Terminal Design: Technical Challenges of the Physical Layer.Telecommunications.Fifth IEE Conference.1995.342-348
[5]T. D. Memon.W. Ghangro.B. S. Chowdhry and A. A. Shaikh.Quadrature Phase Shift Keying modulator & demodulator for Wireless Modem.Computer, Control and Communication. 2nd International Conference on 17-18,2009.pp.1-6
[6]Giovanni Cherubini.Eleftheriou. E.Olcer. S, Cioffi. J.Filter Bank Modulation Techniques for Very High-Speed Digital Subscriber Lines. IEEE Comm. Mag.vol.38, pp.98-104.May 2000.
[7]G. Cherubini.E. Eleftherou and S. Olcer.Filtered multitone modulation for VDSL.Proc. IEEE Globecom'99, Rio de Janeiro, Brazil, Dec.1999, pp.1139-1144.
[8]Giovanni Cherubini.Eleftheriou. E.Olcer. S.Filetered Multitone Modulation for Very High-speed Digital Subscriber Lines.IEEE JSAC.pp.1016-1028. June 2002.
[9]Tonello, A.M.Pecile,F.A Filtered Multitone Modulation Modem for Multiuser Power Line Communication with an Efficient Implementation.Power Line Communications and Its Applications.ISPLC'07.IEEE International Symposium.2007.155-160
[10]Andrea M. Tonello.Time Domain and Frequency Domain Implementations of FMT Modulation Architectures.Proc. IEEE Inernational Conference on Acoustics, Speech and Signal Processing (ICASSP 2006).Toulouse. vol.4, pp.625-628.Mar.2006.
[11]Andrea M. Tonello. Perfomance Limits for Filtered Multitone Modulation in Fading Channels. IEEE Tr. Wireless Comm.pp.2121.Sep.2002.
[12]Bahram Borna.Timothy N.Davidson.Efficient Design of FMT Systems.IEEE Transactions on Communications.2006.Vol.54.794-797
[13]张丙峰.朱维红.高振明.滤波多音调制系统的滤波器优化设计.山东大学学报(理学版).2007.第5期.19-23
[14]朱维红.张丙峰.高振明.滤波多音调制系统容量及滤波器设计.山东大学学报(理学版).2007.第1期.49-54
[15]许晓荣.郑宝玉.FMT滤波器组设计与性能分析.南京邮电大学学报(自然科学版).2008.第3期.77-82
[16]张灿.高振明.FMT系统中基于最小均方误差法的滤波器组优化设计.电子技术应用.2006.第6期.118-120
[17]Benvenuto. N.Tomasin. S and Tomba. L.Receiver architecture for FMT broadband wireless systems.Vehicular Technology Conference.IEEE VTS 53rd.2001.643-647
[18]Benvenuto. N.Tomasin. S and Tomba. L.Equalizaton Methods in OFDM and FMT Systems for Broadband Wireless Communications.IEEE TCOMM.2002.1413-1418
[19]Joao Gomes.Milica Stojanovic.Performance Analysis of Filtered Multitone Modulation Systems for Underwater Communication.OCEANS 2009.MTS/IEEE Biloxi-Marine Technology for Our Future: Global and Local Challenges.1-9
[20]Inaki Berenguer. Ian J.Wassell. Efficient FMT Equalization in Outdoor Broadband Wireless Systems. Proc. IEEE International Symposium on Advances in Wireless Communications.Victoria.Canada.2002.
[21]钟华.郑林华.金国平.丁宏.严格采样FMT系统频域均衡算法.电路与系统学报.2010.第3期.54-58
[22]钟华.郑林华.金国平.基于最大比特速率准则的FMT频域均衡算法.电子与信息学报.2010.第6期.1429-1434
[23]钟华.滤波多音调制(FMT)系统均衡技术研究.[学位论文].国防科学技术大学.2010
[24]张丙峰.基于宽带无线信道的多载波调制理论与技术仿真.[学位论文].山东大学.2008
[25]陈悦.朱维红.高振明.李金海.一种FMT系统内的MMSE-DFE均衡方法及其性能研究.信号处理.2005.第1期.31-34
[26]孙巧云.滤波多音调制系统中的均衡技术研究.[学位论文].山东大学.2006
[27]GuiXia Kang.M. Weckerle and E. Costa.Space-time Joint Channel Estimation in Filtered Multi-tone based Multi-carrier Multi-branch system. IEEE WCNC'04.2004.1844-1849.
[28]魏慧玲.高振明.朱维红等.FMT系统中信道估计的分析和仿真.山东大学学报(理学版).2005.第6期.62-65
[29]胡兰雨.高振明.朱维红.张灿.孙巧云.基于PN码导频的FMT信道估计方法.山东大学学报(理学版).2006.01期.120-124.
[30]胡兰雨.滤波多音调制系统中的信道估计和均衡技术研究.[学位论文].山东大学.2006
[31]金国平.钟华.郑林华.FMT频域信道估计算法的研究及其性能分析.计算机工程.10期.2009
[32]金国平.滤波多音调制技术(FMT)中信道估计和同步技术研究[学位论文].国防科技大学.2008
[33]金国平.钟华.郑林华.FMT系统中一种新的信道估计算法.信号处理.2009.第5期.811-815.
[34]Harris, F.J. Dick, C.Rice, M.Digital receivers and transmitters using polyphase filter banks for wireless communications.Microvwave Theory and Techniques. IEEE Transactions.Vol.51.1395-1412
[35]陶然.张惠云.王越著.多抽样率数字信号处理理论及其应用.清华大学出版社.2007.4
[36]张登银.邓宝玉.广义正交传输系统及其高效实现方法.通信学报.2002.第12期.102-109
[37]C. Richard Johnson.Philip Schniter.Thomas J. Endres.James D. Behm.Donald R. Brown.Raul A. Casas.Blind Equalization Using the Constant Modulus Criterion: A Review.Proceedings of the IEEE. Vol.86.pp.1927-1950.Oct.1998
[38]J. M. Cioffi.G. P. Dudevoir. M. V. Eyugoblu.G. D. Forney.MMSE decision-feedback equalizers and coding Part I: Equalization results.IEEE Trans. Commun.vol.43.pp.2582-2594.Oct.1995
[39]ETSI TR 102 580 v1.1.1 Terrestrial Trunked Radio (TETRA); Release 2; Designer's Guide; TETRA High-Speed Data (HSD); TETRA Enhanced Data Service (TEDS)
[40]M. Nouri.D. Ball.M. Rayne.V. Lottici.R. Reggiannini and M. Carta.TEDS:a High Speed Digital Mobile Communication Air Interface for Professional Users Part Ⅰ:Overview of Physical Layer. Vehicular Technology Conference.2007.pp:959-963.
[41]M. Nouri.V. Lottici.R. Reggiannini.D. Ball and M. Rayne.TEDS:a High Speed Digital Mobile Communication Air Interface for Professional Users. Vehicular Technology Magazine.IEEE. Vol.1.2006. pp.32-42.
[42]Steven M. Kay.罗鹏飞等译.统计信号处理基础—估计与检测理论.北京电子工业出版社.2006.7
[43]Matthias Patzold著.陈伟译.移动衰落信道.北京电子工业出版社.2009.1
[44]ETSI ETR 300-1 Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Designers' guide; Part 1:Overview, technical description and radio aspects