Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/4849
標題: 跳頻分碼多工無線系統中之 廣義跳頻碼之設計與分析
Design and Performance Analysis of Generalized Hopping Codes for FH-CDMA Wireless Systems
作者: 謝杰紘
Hsieh, Chieh-Hung
關鍵字: 跳頻分碼多工;FH-CDMA;無線系統;Wireless System
出版社: 通訊工程研究所
引用: [1] J. G. Proakis, Digital Communications, 4th edition. McGraw-Hill, 1995. [2] K. Pahlavan and A. H. Levesque, Wireless Information Communications, 2nd edition. Wiley, 2005. [3] 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. [4] T. Eng and L. B. Milstein, “Comparison of hybrid FDMA/CDMA systems in fre-quency selective Rayleigh fading,” IEEE J. Select. Areas Commun., vol. 12, pp. 938-951, June 1994 [5] 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, Nov. 1992. [6] E. L. Titlebaum and L. H. Sibul, “Time-Frequency Hop Signals Part II: Coding Based upon Quadratic Congruences,” IEEE Transactions on Aerospace and Electronic Sys-tems, vol. 17, no. 4, pp. 494-500, July 1981. [7] S. V. Maric and E. L. Titlebaum, “Frequency hop multiple access codes based upon the theory of cubic congruences,” IEEE Transactions on Aerospace and Electronic Systems, vol. 26, no. 6, pp. 1035-1039, Nov. 1990. [8] G. I. Turin, “Introduction to spread-spectrum antimultipath techniques and their appli-cation to urban digital radio,” Proc. IEEE, vol. 68, pp. 328-353, March 1980. [9] D. J. Goodman, P. S. Henry and V. K. Prabhu, “Frequency-hopping multilevel FSK for mobile radio,” Bell Syst. Tech. J., vol. 59, pp. 1257-1275, Sep. 1980 [10] G. Einarsson, “Address assignment for a time-frequency, coded, spread spectrum sys-tem,” Bell Syst. Tech. J., vol. 59, pp. 1241-1255, Sep. 1980. [11] W. C. Kwong, P. A. Perrier and P. R. Prucnal, “Performance comparison of asynchro-nous and synchronous code-division multiple-access techniques for fiber-optic local area networks,” IEEE Trans. Commun., vol. 39, no. 11, pp. 1625-1634, Nov. 1991. [12] J. Wu and D. J. Costello, Jr, “New multilevel codes over GF(q),” IEEE Trans. Inf. Theory, vol. 38, no. 3, pp. 933-939, May 1992. [13] S. V. Maric and E. L. Titlebaum, “A class of frequency hop codes with nearly ideal characteristics for use in multiple-access spread-spectrum communications and radar and sonar systems,” IEEE Trans. Commun., vol. 40, no. 9, pp. 1442-1447, Sept. 1992. [14] C.-L. I and R. D. Gitlin, “Multicode CDMA wireless personal communications net-works,” in Proc. IEEE Int. Conf. Communications (ICC) Seattle, WA, pp. 1060-1064, Jun. 1995. [15] P. R. Prucnal, S. R. Forrest, I. Glesk, E. Narimanov, W. C. Kwong, R. J. Runser, M. Goodman, and T. H. Curtis, Ultra-Fast Multidimensional OCDMA Networks Palm Springs, CA, Jan. 14-16, 2004. [16] T. H. Shake, “Security performance of optical CDMA Against eavesdropping” J. Lightw. Technol., vol. 23, no. 2, pp. 655-670, Feb. 2005. [17] G.-C. Yang and W. C. Kwong, Prime Codes with Applications to CDMA Optical and Wireless Networks, Norwood, MA: Artech House, 2002. [18] C.-Y. Chang, G.-C. Yang and W. C. Kwong, ” Wavelength-time codes with maximum cross-correlation function of two for multicode-keying optical CDMA,” J. Lightwave Technol., vol. 24, no. 3, pp. 1093-1100, March 2006. [19] J.-J. Chen and G.-C. Yang , “CDMA fiber-optic systems with optical hard limiters,” J. Lightw. Technol., vol. 19, no. 7, pp. 950-958, July 2001. [20] S. B. Wicker and V. K. Bhargava (eds.), Reed-Solomon Codes and Their Applications, New York: Wiley-IEEE Press, Sept. 1999. [21] T. Mabuchi, R. Kohno and H. Imai, “Multiuser detection scheme based on canceling cochannel interference for MFSK/FH-SSMA system,” IEEE J. Select. Areas Com-mun., vol. 12, no. 4, pp. 593-604, May 1994.
摘要: 
跳頻分碼多工系統在無線通訊上的應用日益受到重視,在本論文中,我們提出一種藉著將最大相關性函數值提升到n,使得碼數目得以變多的新式質數碼,稱之為多階層質數碼。當P是一個質數而代表此質數之次方的n是一正整數,我們可得到碼之數目為P的n次方,這些碼之長度為P且最大相關函數值為n。在碼的長度不變,互相關函數性質變為n的情況下,可大幅提高碼的用戶量,並使其在頻寬不變的狀態下,大量增加同時使用系統之用戶的數目。此多階層質數碼可分為n的階層,如任意兩個碼在第l階層,則其相關函式值即為l。我們分析多階層質數碼在開關鍵移跳頻分碼多工系統中之效能。以往只能求得最大互相關函數值為2之碰撞機率,我們提供了最大互相關函數值為n中互相關函數值為n,n - 1,…,1。之碰撞機率可根據不同的需求,在系統效能與資料傳輸速率上選擇較佳的折衷解決辦法。我們的結果顯示在使用者數量與系統效能中,藉著階層的選擇取得有效的平衡。

The application of frequency-hopping code-division multiple access (FH-CDMA) to wireless communication systems has been receiving significant attention recently. In this thesis, we study a new family of prime codes, so-called multi-level prime codes, with ex-panded code cardinality by relaxing the maximum cross-correlation function of λc to n, where n is a positive integer. If P is a prime number, our new constructions show that there are Pn sequence of length P and its maximum cross-correlation value is less than or equal to n. These multi-level prime codes can be partitioned into n levels, of which the cross-correlation peak between any two FH codes in level l is at most l ( where l ≤ n ). We analyze the performance of the multi-level prime codes in a conventional ON-OFF key-ing/FH-CDMA (OOK/FH-CDMA) system with hard-limiting detection, and provide the hit probability qn,0, qn,1, …, qn,n of having the cross-correlation values 0, 1, …, n, respectively. Our results show that there is a trade-off between code performance and cardinality.
URI: http://hdl.handle.net/11455/4849
其他識別: U0005-1808200819440100
Appears in Collections:通訊工程研究所

Show full item record
 

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.