高速分组无线网中可变速率传输的研究与实现
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摘要
本文首先研究了多进制正交码扩频的原理及多进制正交码扩频信号的最佳接收机模型，讨论了CODIT工程中可变速率传输的概念和原理。其次，在导频信道辅助的多进制正交码扩频系统中提出了一种可变速率传输的方案：同步信道采用固定的速率，用64位的m序列扩频，传输同步和数据信道的速率信息。数据信道采用512Kbps、256Kbps、128Kbps和64Kbps四种传输速率，分别用Walsh序列进行16进制扩频。然后讨论了发射模块和接收模块的软硬件设计与实现，并对系统在多径衰落信道中的性能进行了研究。本文还提出了一种利用计算机增强性并口实现计算机与高速分组无线网Modem连接的方法。本文的最后讨论了系统中有待进一步解决的问题。
In this thesis, the principle of M-ary orthogonal spread spectrum and the optimal receiver model of M-ary orthogonal spread spectrum signal are studied firstly. The concept and principle of variable rate transmission in CODIT is discussed. Secondly, a new scheme of variable rate transmission in a pilot channel aided M-ary orthogonal spread spectrum system is presented. Pilot channel spread by a 64-bit m-sequence carries the synchronization information and rate information of data channel. Data channel spread by 16-ary orthogonal code carries data with the rate of 512kbps, 256kbps, 128kbps and 64kbps. Thirdly, the design and implementation of hardware and software of variable rate transmission are given in detail. System performance in multi-path fading channel is also studied. Then a new design of linking the computer and HSPRN modem via Enhanced Parallel Port (EPP) is presented. Finally, the problems to be solved of the system are discussed.
In this thesis, the principle of M-ary orthogonal spread spectrum and the optimal receiver model of M-ary orthogonal spread spectrum signal are studied firstly. The concept and principle of variable rate transmission in CODIT is discussed. Secondly, a new scheme of variable rate transmission in a pilot channel aided M-ary orthogonal spread spectrum system is presented. Pilot channel spread by a 64-bit m-sequence carries the synchronization information and rate information of data channel. Data channel spread by 16-ary orthogonal code carries data with the rate of 512kbps, 256kbps, 128kbps and 64kbps. Thirdly, the design and implementation of hardware and software of variable rate transmission are given in detail. System performance in multi-path fading channel is also studied. Then a new design of linking the computer and HSPRN modem via Enhanced Parallel Port (EPP) is presented. Finally, the problems to be solved of the system are discussed.
引文
[1] R. E. Kahn, et al., "Advances in Packet Radio Technology", Proc. of IEEE, Vol. 66, No. 11, Nov. 1978, pp. 21-32.
[2] 李建东“分组无线电网络”，通信技术与发展，1989年，第3期。
[3] N. Abramson, "The ALOHA System-Another Alternative for Computer Communication", AFIPS Conf. Proc., Vol. 2, Feb. 1976.
[4] A. Alwan et al, "Adaptive Mobile Multimedia Networks", IEEE Personal Communication, April 1996, pp. 34-50.
[5] 李建东，杨家玮，“个人通信”，人民邮电出版社，1998，5
[6] 郭梯云，杨家玮，李建东，“数字移动通信”，人民邮电出版社，1995，3
[7] J.Jubin and J.D. Tornow, "The DARPA Packet Radio Network Protocols" Proc. of IEEE, Vol.75, No.1, January 1987, pp. 21-32.
[8] Dennis J. Baker, "Data/Voice Communication over a Multihop, Mobile, High Frequency Network", IEEE MILCOM'97.(unclassified)
[9] M. Leiner et al., "Goals and Challenges of the DARPA GloMo Program", IEEE Personal Communication, December 1996, pp. 34-43.
[10] "Military Standard—Interoperability Standard for Digital Message Device Subsystems (MIL-STD-188-220B)", Jan. 1998.
[11] 李建东 李维英 陈家模等“短波自组织网络技术及其试验系统”，电子学报，1996年4月。
[12] 曾兴雯，刘乃安，“通信中的扩展频谱技术”，西安电子科技大学出版社，199年9月。
[13] J.C.Liberti, et al., "Smart Antennas for Wireless Communications: IS-95 & Third Generation CDMA Applications", Prentice Hall, 1999.
[14] Louay M.A. Jalloul and Jack M. Holtzman, "Performance analysis of DS/CDMA with noncoherent M-ary orthogonal modulation in multipath fading channels", IEEE JSAC, Vol.15, No.5, June 1994, pp. 862-870.
[15] 胡征，樊昌信，“沃尔什函数及其在通信中的应用”，人民邮电出版社，1980年。
[16] 朱近康“扩展频谱通信及其应用”，中国科学技术大学出版社，1993年。
[17] Don J. Torrieri, "Performance of direct-sequence systems with long pseudonoise sequence", IEEE JSAC Vol. 10, No. 4, May 1994.
[18] Stanford Telecom, "DDS Data Handbook", Fourth Edition, 1996.
[19] Stanford Telecom, "The Spread Spectrum Handbook", Fourth Edition, 1996.
[20] Altera Data Book, 1999.
[21] Analog Device, "ADSP-2100 Family User's Manual".
[22] 翟尘辉，冯毛官，“单片计算机原理与应用”，西安交通大学出版社，1996年。
[23] 宋万杰，罗丰等，“CPLD技术及其应用”，西安电子科技大学出版社，1999年。
[24] 陈育斌等．多径衰落信道中M进制正交码直扩系统的性能[J]，西安电子科技大学学报，1999，26(5)：558～563．
[25] 杨军，李维英，李建东等，含同步误差的正交码CDMA系统性能分析，西安电子科技大学学报，2001．
[26] Institute of Electrical and Electronics Engineers, "IEEE Standard Signaling Method for a Bidirectional Parallel Peripheral Interface for Personal Computers". 1994;(10).
[2] 李建东“分组无线电网络”，通信技术与发展，1989年，第3期。
[3] N. Abramson, "The ALOHA System-Another Alternative for Computer Communication", AFIPS Conf. Proc., Vol. 2, Feb. 1976.
[4] A. Alwan et al, "Adaptive Mobile Multimedia Networks", IEEE Personal Communication, April 1996, pp. 34-50.
[5] 李建东，杨家玮，“个人通信”，人民邮电出版社，1998，5
[6] 郭梯云，杨家玮，李建东，“数字移动通信”，人民邮电出版社，1995，3
[7] J.Jubin and J.D. Tornow, "The DARPA Packet Radio Network Protocols" Proc. of IEEE, Vol.75, No.1, January 1987, pp. 21-32.
[8] Dennis J. Baker, "Data/Voice Communication over a Multihop, Mobile, High Frequency Network", IEEE MILCOM'97.(unclassified)
[9] M. Leiner et al., "Goals and Challenges of the DARPA GloMo Program", IEEE Personal Communication, December 1996, pp. 34-43.
[10] "Military Standard—Interoperability Standard for Digital Message Device Subsystems (MIL-STD-188-220B)", Jan. 1998.
[11] 李建东 李维英 陈家模等“短波自组织网络技术及其试验系统”，电子学报，1996年4月。
[12] 曾兴雯，刘乃安，“通信中的扩展频谱技术”，西安电子科技大学出版社，199年9月。
[13] J.C.Liberti, et al., "Smart Antennas for Wireless Communications: IS-95 & Third Generation CDMA Applications", Prentice Hall, 1999.
[14] Louay M.A. Jalloul and Jack M. Holtzman, "Performance analysis of DS/CDMA with noncoherent M-ary orthogonal modulation in multipath fading channels", IEEE JSAC, Vol.15, No.5, June 1994, pp. 862-870.
[15] 胡征，樊昌信，“沃尔什函数及其在通信中的应用”，人民邮电出版社，1980年。
[16] 朱近康“扩展频谱通信及其应用”，中国科学技术大学出版社，1993年。
[17] Don J. Torrieri, "Performance of direct-sequence systems with long pseudonoise sequence", IEEE JSAC Vol. 10, No. 4, May 1994.
[18] Stanford Telecom, "DDS Data Handbook", Fourth Edition, 1996.
[19] Stanford Telecom, "The Spread Spectrum Handbook", Fourth Edition, 1996.
[20] Altera Data Book, 1999.
[21] Analog Device, "ADSP-2100 Family User's Manual".
[22] 翟尘辉，冯毛官，“单片计算机原理与应用”，西安交通大学出版社，1996年。
[23] 宋万杰，罗丰等，“CPLD技术及其应用”，西安电子科技大学出版社，1999年。
[24] 陈育斌等．多径衰落信道中M进制正交码直扩系统的性能[J]，西安电子科技大学学报，1999，26(5)：558～563．
[25] 杨军，李维英，李建东等，含同步误差的正交码CDMA系统性能分析，西安电子科技大学学报，2001．
[26] Institute of Electrical and Electronics Engineers, "IEEE Standard Signaling Method for a Bidirectional Parallel Peripheral Interface for Personal Computers". 1994;(10).