Please use this identifier to cite or link to this item:
Design and Performance Analysis of Generalized Hopping Codes for FH-CDMA Wireless Systems
|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:|| J. G. Proakis, Digital Communications, 4th edition. McGraw-Hill, 1995.  K. Pahlavan and A. H. Levesque, Wireless Information Communications, 2nd edition. Wiley, 2005.  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.  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  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.  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.  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.  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.  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  G. Einarsson, “Address assignment for a time-frequency, coded, spread spectrum sys-tem,” Bell Syst. Tech. J., vol. 59, pp. 1241-1255, Sep. 1980.  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.  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.  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.  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.  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.  T. H. Shake, “Security performance of optical CDMA Against eavesdropping” J. Lightw. Technol., vol. 23, no. 2, pp. 655-670, Feb. 2005.  G.-C. Yang and W. C. Kwong, Prime Codes with Applications to CDMA Optical and Wireless Networks, Norwood, MA: Artech House, 2002.  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.  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.  S. B. Wicker and V. K. Bhargava (eds.), Reed-Solomon Codes and Their Applications, New York: Wiley-IEEE Press, Sept. 1999.  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.
|Appears in Collections:||通訊工程研究所|
Show full item record
TAIR Related Article
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.