非对称数字用户线（ADSL）技术与应用研究
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摘要
信息产业飞速发展，尤其是因特网的普遍应用，使宽带化成为接入网的发展趋势。非对称数字用户线(ADSL)技术以充分利用现有双绞线资源的潜力为出发点，在不影响电话业务的同时，提供高速、非对称的数据接入。本文系统研究了非对称数字用户线的理论，重点研究了国际上对其通用的编码方式—离散多音调制(DMT)技术。同时还研究了其发送与接收机模型。针对ADSL应用，本文着重介绍了32路ADSL局端业务板的开发与设计。同时，在开发的过程中，运用理论知识解决了ADSL初始化和其建立连接等问题。
论文的主要工作：深入研究ADSL理论及其离散多音调制。设计、并实际开发了高集成度32路ADSL局端业务板。目前，ADSL业务板已经过各项严格测试，在实验室及深圳试验局运行良好。
With the rapid development of Information Technology (IT), especially the universal application of Internet, broadband Access Networks (AN) become more and more prevalent. Asymmetric Digital Subscriber Loop (ADSL) is the technology that provides high-speed, asymmetric data access, synchronously the potential of Twisted Pair(TP) is utilized, and the Plain Old Telephone Service(POTS) is not interrupted. We study the theory of Asymmetric Digital Subscriber Loop (ADSL), important in Discrete Multi-Tone (DMT) modulation that is the usual international encoder in ADSL. In the same time, we study the model of transmitter and receiver. About the application of ADSL, We design and debug the of 32 line ADSL board for CO(Center Office) in this paper. In addition, about the process of practice in design the ADSL board, we solve the questions such as the initialization and connection of ADSL etc.
The main works in the paper could be described as follow: Study the theory of ADSL and DMT, design and debug the high density 32 line ADSL board for CO. At present, the ADSL board has passed all strict tests. They run steadily in the lab and the telecommunication office of Shenzhen for test.
论文的主要工作：深入研究ADSL理论及其离散多音调制。设计、并实际开发了高集成度32路ADSL局端业务板。目前，ADSL业务板已经过各项严格测试，在实验室及深圳试验局运行良好。
With the rapid development of Information Technology (IT), especially the universal application of Internet, broadband Access Networks (AN) become more and more prevalent. Asymmetric Digital Subscriber Loop (ADSL) is the technology that provides high-speed, asymmetric data access, synchronously the potential of Twisted Pair(TP) is utilized, and the Plain Old Telephone Service(POTS) is not interrupted. We study the theory of Asymmetric Digital Subscriber Loop (ADSL), important in Discrete Multi-Tone (DMT) modulation that is the usual international encoder in ADSL. In the same time, we study the model of transmitter and receiver. About the application of ADSL, We design and debug the of 32 line ADSL board for CO(Center Office) in this paper. In addition, about the process of practice in design the ADSL board, we solve the questions such as the initialization and connection of ADSL etc.
The main works in the paper could be described as follow: Study the theory of ADSL and DMT, design and debug the high density 32 line ADSL board for CO. At present, the ADSL board has passed all strict tests. They run steadily in the lab and the telecommunication office of Shenzhen for test.
引文
1. ITU-T Standard, Draft G.992.1 Asymmetrical Digital Subscriber Line (ADSL) Transceivers , 1999.4
2. ITU-T Standard, Draft G.992.2 Splitterless Asymmetrical Digital Subscriber Line (ADSL) Transceivers, 1999.4
3. ITU-T Standard, Draft G.994.1 Handshake Procedures for Digital Subscriber Line (DSL) Transceivers, 1999.4
4. ITU-T Standard, Draft G.995.1 Overview of Digital Subscriber Line (DSL) Recommendations, 1999.4
5. ITU-T Standard, Draft G.996.1 Test Procedures for Digital Subscriber Line (DSL) Transceivers, 1999.4
6. ITU-T Standard, Draft G.997.1 Physical Layer Management for Digital Subscriber Line (DSL) Transceivers, 1999.4
7. ANSI Standard T1.413, Asymmetrical Digital Subscriber Line (ADSL)Metalic Interface Specification, 1995
8. ANSI T1.413 issue2, Asymmetrical Digital Subscriber Line (ADSL) Metalic Interface, 1998.11
9. ATM Forum, Utopia lever2 ,Version 1.0, 1995.6
10. Centillium Communications INC.Fremont.CA USA, CopperFlite Octal Port CO Datasheet V1_6, 2001.1
11. Centillium Communications INC.Fremont.CA USA, CopperFlite Octal Port CO Programming Manual V 1_5, 2001.4
12. J.J.Werner; The HDSL Environment,IEEE Journal of Selected Areas in Commun., Vol.9, pp.785-800,Aug.1991
13. N. A1-Dhahir and J. M. Cioffi ; Symbol Rate Optimization for the MMSE-DFE on Bandlimited Dispersive Channels, Digital Signal Processing J., pp.73-95, Apr. 1996.
14. Waller Y.Chen and David L.Waring; ADSL Noise Environment and Potential System Performance , ICC'94, pp.451-455, May. 1994.
15. Richard Gross, Dale Veeneman; SNR and Spectral Properties for a Clipped DMT ADSL Signal, ICC'94, Vol.2, No.3, pp.843-847, 1994.
16. Alan Stewart; Keeping an eye on ADSL, Telecom Asia, Nov.1997
17．(美)Walter Goralski著；刘勇等译，ADSL和DSL技术 人民邮电出版社，2000．3
18．(美)Padmand Warrier Balaji Kumar著：任天恩译，XDSL技术与体系结构清华大学出版社，2001．4
19．(美)Dennis J．Rauschmayer著；杨威王巧燕译，ADSL/VDSL原理人民邮电出版社，2001．4
20．(美)Aandrew S．Tanenbaum著；熊桂喜 王小虎译，计算机网络清华大学出版社，1998．7
21．(美)Rvay Horak著；徐勇 赵岩 林梓等译，通信系统与网络电子工业出版社，2001．3
22．韦乐平著；接入网 人民邮电出版社，1997．7
23．曲华 李转年 韩俊刚著：接入网与V5接口 人民邮电出版社，1999．10
24．鲁士文著：计算机通讯网络基础教程 科学出版社，2000．7
25．胡道元著：计算机网络工程指南 电子工业出版社，1993．9．
26．樊昌信著；通信原理 国防工业出版社，1995．10
27．胡广书；数字信号处理—理论、算法与实现，清华大学出版社，1997．8
28．邮电部标准；接入网技术要求——不对称数字用户线(ADSL)．中华人民共和国邮电部，1998．2
29．郑国全 周桂平；如何选择和应用ADSL技术，电信科学，1998．12
2. ITU-T Standard, Draft G.992.2 Splitterless Asymmetrical Digital Subscriber Line (ADSL) Transceivers, 1999.4
3. ITU-T Standard, Draft G.994.1 Handshake Procedures for Digital Subscriber Line (DSL) Transceivers, 1999.4
4. ITU-T Standard, Draft G.995.1 Overview of Digital Subscriber Line (DSL) Recommendations, 1999.4
5. ITU-T Standard, Draft G.996.1 Test Procedures for Digital Subscriber Line (DSL) Transceivers, 1999.4
6. ITU-T Standard, Draft G.997.1 Physical Layer Management for Digital Subscriber Line (DSL) Transceivers, 1999.4
7. ANSI Standard T1.413, Asymmetrical Digital Subscriber Line (ADSL)Metalic Interface Specification, 1995
8. ANSI T1.413 issue2, Asymmetrical Digital Subscriber Line (ADSL) Metalic Interface, 1998.11
9. ATM Forum, Utopia lever2 ,Version 1.0, 1995.6
10. Centillium Communications INC.Fremont.CA USA, CopperFlite Octal Port CO Datasheet V1_6, 2001.1
11. Centillium Communications INC.Fremont.CA USA, CopperFlite Octal Port CO Programming Manual V 1_5, 2001.4
12. J.J.Werner; The HDSL Environment,IEEE Journal of Selected Areas in Commun., Vol.9, pp.785-800,Aug.1991
13. N. A1-Dhahir and J. M. Cioffi ; Symbol Rate Optimization for the MMSE-DFE on Bandlimited Dispersive Channels, Digital Signal Processing J., pp.73-95, Apr. 1996.
14. Waller Y.Chen and David L.Waring; ADSL Noise Environment and Potential System Performance , ICC'94, pp.451-455, May. 1994.
15. Richard Gross, Dale Veeneman; SNR and Spectral Properties for a Clipped DMT ADSL Signal, ICC'94, Vol.2, No.3, pp.843-847, 1994.
16. Alan Stewart; Keeping an eye on ADSL, Telecom Asia, Nov.1997
17．(美)Walter Goralski著；刘勇等译，ADSL和DSL技术 人民邮电出版社，2000．3
18．(美)Padmand Warrier Balaji Kumar著：任天恩译，XDSL技术与体系结构清华大学出版社，2001．4
19．(美)Dennis J．Rauschmayer著；杨威王巧燕译，ADSL/VDSL原理人民邮电出版社，2001．4
20．(美)Aandrew S．Tanenbaum著；熊桂喜 王小虎译，计算机网络清华大学出版社，1998．7
21．(美)Rvay Horak著；徐勇 赵岩 林梓等译，通信系统与网络电子工业出版社，2001．3
22．韦乐平著；接入网 人民邮电出版社，1997．7
23．曲华 李转年 韩俊刚著：接入网与V5接口 人民邮电出版社，1999．10
24．鲁士文著：计算机通讯网络基础教程 科学出版社，2000．7
25．胡道元著：计算机网络工程指南 电子工业出版社，1993．9．
26．樊昌信著；通信原理 国防工业出版社，1995．10
27．胡广书；数字信号处理—理论、算法与实现，清华大学出版社，1997．8
28．邮电部标准；接入网技术要求——不对称数字用户线(ADSL)．中华人民共和国邮电部，1998．2
29．郑国全 周桂平；如何选择和应用ADSL技术，电信科学，1998．12