Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/6590
標題: 應用於同步與非同步光纖分碼多工系統之波長-時間展頻碼之效能分析
Performance Analysis of Synchronous and Asynchronous Wavelength-Time Spreading Codes for Optical CDMA Systems
作者: 胡曉偉
Hu, Hsiao-Wei
關鍵字: OCDMA;光纖分碼多工系統;Wavelength-time spreading codes;波長時間展頻碼
出版社: 電機工程學系所
引用: [1]J. A. Salehi, “Code division multiple-access techniques in optical fiber network-part 1:fundamental principles,” IEEE Trans. Commun., vol.37, pp.824-833, Aug.1989. [2]T. O'Farrell and S. Lochmann, “Performance analysis of an optical correlator receiver for SIK DS-CDMA communication,” Electron. Lett., vol. 30, no.1, pp. 63-65, Jan. 1994. [3]M. Kavehard and D. Zaccarin, “Optical code-division-multiplexed systems based on spectral encoding of noncoherent sources.” J. Lightwave Technol., vol. 13, no. 1, pp. 534-545, Mar. 1995. [4]G.-C. Yang and W.C. Kwong, Prime codes with applications to CDMA optical and wireless networks, Artech House, Boston, MA, 2002. [5]F.R.K. Chung, J.A. Salehi, and V.K. Wei, “Optical Orthogonal Codes: Design, Analysis, and Applications,” IEEE Trans. Info. Theory, vol. 35, no. 3, pp. 595-604, 1989. [6]G.-C. Yang, and T. Fuja, “Optical Orthogonal Codes with Unequal Auto- and Cross-correlation Constraints,” IEEE Trans. Info. Theory, vol. 41, no. 1, pp. 96-106, 1995. [7]W.C. Kwong and G.-C. Yang, “Double-weight signature pattern codes for multi-corefiber code-division multiple-access networks,” IEEE Commun. Lett., vol. 5, no. 5, 2001. [8]U.N. Griner and S. Arnon, “A novel bipolar wavelength-time coding scheme for optical CDMA systems,” IEEE Photon. Technol. Lett., vol. 16, no. 1, pp.332-334, Jan. 2004. [9]K. Yu, J. Shin, and N. Park, “Wavelength-time spreading optical CDMA system using wavelength multiplexers and mirrored fiber delay lines,”IEEE Photon. Technol. Lett., vol. 12, no. 9, pp. 1278-1280, September 2000. [10]L. Tanˇcevski and I. Andonovic, “Wavelength hopping/time spreading code division multiple access systems,” Electron. Lett., vol. 30, no. 17, pp. 1388-1390, August 1994. [11]L. Tanˇcevski and I. Andonovic, “Hybrid wavelength hopping/time spreading scheme for use in massive optical LANs with increased security,” J. Lightwave Technol., vol.14, no. 12, pp. 2636-2647, Dec. 1996 [12]W. C. Kwong, G.-C. Yang, and Y.-C. Liu, “A new family of wavelength-time optical CDMA codes utilizing programmable arrayed waveguide gratings,” IEEE J. Sel. Areas Commun., vol. 23, no. 8, 2005. [13]A.J. Mendez, R. M. Gagliardi, V.J. Hernandez, C.V. Bennett, and W.J. Lennon, “Design and performance analysis of Wavelength/Time (W/T) matrix codes for optical COMA,” J. Lightwave, Technol., vol. 21, no. 11, pp. 2524-2533, Nov. 2003. [14]G.-C. Yang and W.C. Kwong, “Performance comparison of multiwavelength CDMA and WDMA+CDMA for fiber-optic networks,” IEEE Trans. Commun., vol. 45, no. 11, pp. 1426-1434, November 1997. [15]V. Baby, I. Glesk, R. J. Runser, R. Fischer, Y.-K. Huang, C.-S. Bres, W.C. Kwong, T.H. Curtis, and P.R. Prucnal, “Experimental demonstration and scalability analysis of a 4-node 102-Gchip/s fast frequency-hopping time spreading CDMA network.” IEEE Photon. Technol. Lett., vol.17, no.1, pp.253-255, Jan. 2005. [16]S. Kim, “Cyclic optical encoders/decoders for compact optical CDMA networks, ”IEEE Photon. Technol. Lett., vol. 12, no. 4, pp. 428-430, April 2000. [17]S. Yegnanarayanan, A.S. Bhushan, and B. Jalali, “Fast wavelength-hopping time-spreading encoding/decoding for optical CDMA,” IEEE Photon. Technol. Lett., vol.12, no. 5, pp. 573-576, May 2000. [18]H. Chung and P.V. Kumar, “Optical orthogonal codes—new bounds and an optimal construction,” IEEE Trans. Info. Theory, vol. 36, pp. 866-873, July 1990. [19]P.C. Teh, P. Petropoulos, M. Ibsen, and D. Richardson, “A comparative study of the performance of seven- and 63-chip optical code-division multiple-access encoders and decoders based on superstructured fiber Bragg gratings,” J. Lightwave Technol., vol. 19, no. 9, pp. 1352-1365, September 2001. [20]D. Zaccarin and M. Kavehrad, “An optical CDMA system based on spectral encoding of LED,” IEEE Photon. Technol. Lett., vol. 4, no. 4, pp. 479-482, 1993. [21]J.-F. Huang and D.-Z. Hsu, “Fiber-grating-based optical CDMA spectral coding with nearly orthogonal m-sequence codes,” IEEE Photon. Technol. Lett., vol. 12, no. 9, pp. 1252-1254, September 2000. [22]Z. Wei, H.M.H. Shalaby, and H. Ghafouri-Shiraz, “Modified quadratic congruence codes for fiber Bragg-grating-based spectral-amplitude-coding optical CDMA systems,” J. Lightwave Technol., vol. 19, no. 9, pp. 1274-1281, September 2001. [23]S.P. Wan and Y. Hu, “Two-dimensional optical CDMA Differential system with prime/OOC codes,” IEEE Photon. Technol. Lett., vol. 13, no. 12, pp. 1373-1375, December 2001. [24]R.M.H. Yim, L.R. Chen, and J. Bajcsy, “Design and performance of 2-D codes for wavelength-time optical CDMA,” IEEE Photon. Technol. Lett., vol. 14, 2002. [25]G.-C. Yang and W.C. Kwong, “Two-dimensional spatial signature patterns,” IEEE Trans. Commun., vol. 44, no. 2, pp. 184-191, February 1996. [26]E.S. Shivaleela, K.N. Sivarajan, and A. Selvarajan, “Design of a new family of two dimensional codes for fiber-optic CDMA networks,” J. Lightwave Technol., vol. 16, no. 4, pp. 501-508, 1998. [27]W.C. Kwong and G.-C. Yang, “Image transmission in multicore-fiber code-division multiple-access networks,” IEEE Commun. Lett., vol. 2, no. 9, 1998. [28]J.G. Proakis, Digital Communications, 3rd ed. New York: McGraw-Hill, 1995. [29]W.C. Kwong, G.-C. Yang, C.-Y. Chang, “Wavelength-hopping time-spreading optical CDMA with bipolar codes” J. Lightwave Technol., vol. 23, no. 1, pp. 260-267, January 2005. [30]S. Topliss, D. Beeler, and L. Altwegg, “Synchronization for passive optical networks,” J. Lightwave, Technol., vol. 13, no. 5, pp. 947-953, May. 1995. [31]R. D. Feldman, Thomas H. Wood, J. P. Meester, and R. F. Austin, “Broadband upgrade of an operating narrowband single-filter passive optical network using coarse wavelength division multiplexing and subcarrier multiple access” J. Lightwave, Technol., vol. 16, no. 1, pp. 1-8, January. 1998. [32]A.W. Lam and S. Tantaratana, Theory and Appliciation of Spread-Spectrum Systems, Piscataway, NJ: IEEE, 1994. [33]K.H.A. Kärkkäinen, “Meaning of maximum and mean-squared crosscorrelation as a performance measure for CDMA code families and their influence on system capacity,” IEICE Trans. Commun., vol. E76-B, pp.848-854, August 1993. [34]C.-P. Hsieh, C.-Y. Chang, G.-C. Yang and W.C. Kwong, “A bipolar-bipolar code for asynchronous wavelength-time optical CDMA,” to appear in IEEE Trans. Commun. [35]J. H. Lee, P. C. Teh, P. Petropoulos, M. Ibsen, and D. Richardson, “A grating-based OCDMA coding-decoding system incorporating a nonlinear optical loop mirror for improved code recognition and noise reduction,” J. Lightw. Technol., vol. 20, no. 1, pp. 36-46, January 2002. [36]Y.Y. Xian, Theory and Appliciation of Higher-Dimensional Hadamard Matrices, Kluwer Academic, New York: 2001.
摘要: 
近年來由於消費者對於頻寬需求快速的增加,使得網路業者提出了光纖到府的架構來滿足高頻寬時代的來臨。因此光纖網路技術被大量的研究,為了提高在傳統一維的展頻系統中更多的使用者,分波跳頻和時域展頻的二維展頻技術已被廣泛的討論與研究。倘欲進一步的提高使用者的數目且提升整體系統效能,在本篇論文當中,提出了一種利用雙極碼做分波跳頻和時域展頻的編碼技術,同時可以應用在被動式光纖網路的架構,這個新的編碼方法將會在本篇論文被討論和分析。

In this thesis, we propose a “synchronous” wavelength-time optical code-division multiple access (OCDMA) scheme using two-dimensional (2-D) Walsh-based bipolar-bipolar code, in which Walsh code sequences are used for time spreading, in place of Barker sequences used in our previously proposed “asynchronous” bipolar- bipolar code. The new synchronous coding scheme supports larger cardinality and better performance than the asynchronous scheme because Walsh code has larger cardinality than Barker sequences and a zero cross-correlation property, in the expense of requiring system synchronization. One potential application is future CDMA-based passive optical networks (PONs), in which synchronous downstream traffic uses the Walsh- based bipolar-bipolar code and asynchronous upstream traffic uses the Barker-based counterpart. Since the new code is modified from the original code, the same hardware can be used for both directions of traffic. Besides, we also compare the bipolar-bipolar code with the bipolar-unipolar code with and without hard-limiting.
URI: http://hdl.handle.net/11455/6590
其他識別: U0005-2007200622302900
Appears in Collections:電機工程學系所

Show full item record
 

Google ScholarTM

Check


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