Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/8481
標題: 二階層跳頻分碼多工無線通訊系統之設計與效能分析
Design and Performance Analysis of a Two-Level FH-CDMA Wireless Communication System
作者: 吳崧銘
Wu, Sung-Ming
關鍵字: CDMA;分碼多工;Frequency Hopping;跳頻
出版社: 電機工程學系所
引用: [1] J. G. Proakis, Digital Communications. McGraw-Hill, 1995. [2] T. S. Rappaport, Wireless Communications: Principles and Practice. Prentice Hall, 1996. [3] T. Mabuchi, R. Kohno, and H. Imai, “Multi-hopping and decoding of error correcting for MFSK/FH-SSMA systems,” IEICE Trans. Commun., vol. E76-B, pp. 874-884, Aug. 1993. [4] G. R. Cooper and R.W. Nettleton, “A spread-spectrum technique for high-capacity mobile communications,” IEEE Trans. Veh. Tech., vol. 27, pp. 264-275, Nov. 1978. [5] T. Eng and L.B. Milstein, “Comparison of hybrid FDMA/CDMA systems in frequency selective Rayleigh fading,” IEEE J. Select. Areas Commun., vol. 12, pp. 938-951, Jun. 1994. [6] Y.R. Tsai and J.F. Chang, “Using frequency hopping spread spectrum technique to combat multipath interference in a multi-accessing environment,” IEEE Trans. Vehicular Technol., vol. 43, no. 2, pp. 211-222, May 1994. [7] G.K. Kaleh, “Frequency-diversity spread-spectrum communication system to counter bandlimited Gaussian interference,” IEEE Trans. Commun., vol. 44, no. 7, pp. 886-893, Jul. 1996. [8] D.J. Goodman, P.S. Henry, and V.K. Prabhu, “Frequency-hopping multilevel FSK for mobile radio,” Bell Syst. Tech. J., vol. 59, no. 7, pp. 1257-1275, Sep. 1980. [9] G.-C. Yang and Wing C. Kwong, “Frequency-hopping codes for multimedia services in mobile telecommunications,” IEEE Trans. Vehicular Technol., vol. 48, no. 6, pp. 1906-1915, Nov. 1999. [10] G.-C. Yang, S.-Y. Lin, and Wing C. Kwong, “MFSK/FH-SSMA wireless systems with double-media services over fading channels,” IEEE Trans. Vehicular Tech., vol. 49, no.3, pp. 900-910, May 2000. [11] G.-C. Yang and W.C. Kwong, Prime Codes with Applications to CDMA Optical and Wireless Networks, Artech House, Norwood, MA, 2002 [12] G.I. Turin, “Introduction to spread spectrum antimultipath techniques and their applications to urban digital radio,” Proc. IEEE, vol. 68, pp. 328-353, Mar. 1980. [13] M. P. Fitton, A. R. Nix and M. A. Beach, “Frequency hopping CDMA for flexible third generation wireless networks,” Global Telecommunications Conference, vol. 9, pp. 1504-1508, Nov.1997. [14] T. S. Rappaport, Wireless Communications: Principles and Practice.Prentice Hall, 1996. [15] Machineni, Hao Shen, and Papandreou-Suppappola, A., “Multi-user schemes using nonlinear time-varying modulation,” IEEE International Conference. vol. 4, pp. 941-944, May 2004. [16] C.-Y. Chang, C.-C. Wang, G.-C. Yang, M.-F. Lin, Y.-S. Liu, and Wing C. Kwong, “Frequency-Hopping CDMA wireless communication systems using prime codes,” in Proc. IEEE 63rd Veh. Technol. Conf., Melbourne, Australia, May 2006, pp.1753-1757. [17] E.L. Titlebaum and L.H Sibul, “Time-frequency hop signals part II: Coding based upon quadratic congruences,” IEEE Trans. Aero. Electron. Sys., vol. 17, no. 4, pp. 494-500, Jul. 1981. [18] M.-F. Lin, G.-C. Yang, C.-Y. Chang and Wing C. Kwong, “Frequency-Hopping CDMA with Reed-Solomon code squences in wireless communications,” IEEE Trans. Commun., vol. 55, no. 11, pp.2052- 2055, Nov. 2007. [19] C.-H. Hsieh, G.-C. Yang, C.-Y. Chang, and Wing C. Kwong, ‘'Constructions on 2D wavelength-time codes for CDMA fiber-optic systems,'' to appear in Proc., IEEE Inter. Conf. Commun., Jun. 2009. [20] T. Mabuchi, R. Kohno and H. Imai, “Multiuser detection scheme based on canceling cochannel interference for MFSK/FH-SSMA system,” IEEE J. Select. Areas Commun., vol. 12, pp. 593-604, May 1994.
摘要: 
在邁向資訊化社會的今日,人們對於語音、數據傳輸及影像等多媒體通訊服務的需求與日俱增,為了滿足人們對這些整合性通訊服務的高度需求,發展新的通訊系統架構取代傳統僅能支援單一媒體傳輸的系統架構則是必然的趨勢。由於跳頻分碼多工技術具有抵抗多路徑之衰減與降低多用戶間干擾的特性,近年來已被廣泛地應用於行動通訊與無線通訊系統。在本篇論文中,除了研究如何在跳頻分碼多工系統中,同時對系統用戶數目的增加與通訊傳輸品質的維護作整體的考量與規劃,也深入的探討調變碼與跳頻碼之間的關係,並將調變碼與跳頻碼整合在一起設計,提出新的跳頻分碼多工系統之設計方法,以改善可同時使用之用戶數目。此新的整合設計將更有彈性的符合不同環境之需求,可以根據當時環境所需之條件,調整新的跳頻分碼多工系統裡的參數,使得系統有更好的適合度。

Recently, frequency-hopping code-division multiple-access (FH-CDMA) systems have been widely studied and known to be effective means of communications in combating multipath fading because of their inherent frequency diversity. With the explosive growth of wireless communication techniques, it is expected to be a flexible support of multimedia services (e.g., data, voice, image, and video) in the future wireless communication systems. Therefore, it is very important to design flexible wireless communication systems which can support a variety of data rates and quality-of services (QoS) requirements for these multimedia services, instead of the conventional communication systems which only can support the single media transmissions. In this thesis, we discuss the relationship between modulation codes and frequency hopping (FH) patterns in details. We integrate both codes to increase the number of simultaneous users and reduce the complexity of systems. The newly proposed system offers more flexibility for the design of systems to meet different system requirements.
URI: http://hdl.handle.net/11455/8481
其他識別: U0005-1208200921064700
Appears in Collections:電機工程學系所

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