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dc.contributorSyue-Wun Weien_US
dc.contributorMao-Chao Linen_US
dc.contributorChi-Chao Chaoen_US
dc.contributor.advisorGuu-Chang Tangen_US
dc.contributor.authorWang, Tai-Chienen_US
dc.identifier.citation[1] L.Tančevski and I.Andonovic, “Hybrid wavelength hopping/time spreading schemes for use in massive optical networks with increased security,” J. Llightwave Technol , vol.14, no. 12, pp. 2636-2647, Dec. 1996. [2] 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, Nov. 1997 [3] G.-C. Yang and W.C. Kwong, Prime Codes With Applications to CDMA Optical and Wireless Networks, Artech House, Norwood, MA, 2002 [4] R.M.H Yim, L.R. Chen, and J. Bajcsy, “Design and performance of 2D codes for wavelength-time optical CDMA,” IEEE Photon. Technol. Lett., vol.14, no. 5, pp. 714-716, May 2002. [5] W.C. Kwong, G.-C. Yang, V. Baby, C.-S. Brès, and P.R. Prucnal, “Multiple-wavelength optical orthogonal codes under prime-sequence permutation for ptical CDMA,” IEEE Trans. Commun., vol. 53, no. 1, pp. 117-123, Jan 2005. [6] L. Tančevski and I. Andonovic, “Wavelength hopping/time spreading code division multiple access systems,” Electron. Lett., vol. 30, no. 17, pp. 1388-1390, Aug. 1994.S. P. Wan and Y. Hu, “Two-dimensional optical CDMA differential system with prime/OOC codes,” IEEE Photon. Technol. Lett., vol. 10, no. 12, pp.1373-1375, Dec. 2001. [7] H. Fathallah, L.A. Rusch, and S. Laroschelle, “Passive optical fast frequency- hop CDMA communication system,” J. Lightwave Technol., vol. 17, pp. 397-405, Mar 1999. [8] L. R. Chen, “Flexible fiber Bragg grating encoder/decoder for hybrid wavelength-time optical CDMA,” IEEE Photon. Technol. Lett., vol. 13, pp 1233-1235, Nov. 2001. [9] 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 encoder and decoder based on the superstructured fiber Bragg grating,” J. Lightwave Technol., vol. 19, pp. 1352-1365, Sep. 2001. [10] J. H. Lee, P. C. Teh, P. Petropoulos, M. Ibsen, D. Richardson, “A grating-based OCDMA coding-decoding system incorporating a nonlinear optical loop mirror for improved code recognition and noise reduction ,” Lighthwave Technol., vol. 20, pp. 36-46, Jan. 2002. [11] S. Yegnanarayanan, A. S. Bhushan, B. Jalali, “Fast wavelength-hopping time-spreading encoding/decoding for optical CDMA,” IEEE Photon. Technol. Lett., vol. 12, pp. 573-576, May 2000. [12] K. Yu, J. shin, and N. Park, “Wavelength-time spreading optical CDMA system using wavelength multiplexers and mirrors fiber delay lines, ” IEEE Photon. Technol. Lett., vol. 12,pp. 1278-1280, Sep. 2000. [13] F.R.K. Chung, J. A. Salehi, and V.K. Wei, “Optical orthogonal codes Design, Analysis, and applications,” IEEE Trans. Inf. Theory, vol. 35, no. 3, pp. 594-604, May 1983. [14] G.-C. Yang and T. Fuja, “Optical orthogonal codes with unequal auto- and cross-correlation constraints,” IEEE Trans. Inform. Theory, vol. 41, no. 1, pp. 96-106, Jan. 1995. [15] G.-C. Yang, “Some new families of optical orthogonal codes for code division multiple-acess fiber-optic network ,” IEEE Proc. Commun.., vol. 42, no. 6, pp. 363-367, Dec. 1995. [16] J.-H. Tien, G-.C. Yang, C.-Y. Chang and W.C. Kwong, “Design and analysis of 2-D code with the maxium cross- correlation value of two for optical CDMA,” to appear in J. Lightwave Technol. [17] J.-J. Chen and G.-C. Yang, “CDMA fiber-optic systems with optical hard limiters,” Lighthwave Technol., vol. 19, no. 7, pp. 950-958, Jul. 2001. [18] J. A. Salehi and C. A. Brackett, “Code division multiple-axess techniques in optical fiber networks-part II: system performance analysis,” IEEE Trans. Commun., vol. 37, no. 8, pp. 834-842, Aug. 1989. [19] M. Azizoglu, J. Sslehi, and Y. Li, “Optical CDMA via temporal codes,” IEEE Trans. Commun., vol. 40, no. 7, pp. 1162-1170, July 1992. [20] H. M. Kwon, “Optical orthogonal code-division multiple-access system-Part I: APD noise and thermal noise,” IEEE Trans. Commun., vol. 42, no. 7, pp. 2470-2479, July 1994. [21] H. Gibbs, Optical Bistability: Controlling Light with light. New York :Academic, 1985. [22] J. Jwell, M. Rushford, and H. Gibbs, “Use of a single nonlinear Fabry-Perot etalon as optical logic gates,” Appl. Phys. Lett., vol. 44, no.2, pp. 172-174, Jan. 1984. [23] J.-H Wu and J. Wu, “Synchronous fiber-optic CDMA using hard-limiter and BCH codes,” Lighthwave Technol., vol. 13, pp. 1169-1176, June. 1995. [24] C.-C. Hsu and G.-C. Yang, and W.C. Kwong, “Hard-limiting performance analysis of 2-D optical codes under the chip-asynchronous assumption,” IEEE Trans. Commun., vol. 56, no. 56, pp. 762-768, May 2008. [25] G.-C. Yang and W.C. Kwong, “Two-dimensional spatial signature patterns,” IEEE Trans. Commun., vol. 44, no. 2, pp. 184-191, Feb. 1996.zh_TW
dc.description.abstractIn this thesis, a new family of wavelength-time codes, which is based on one-dimensional optical orthogonal codes (1D OOCs) of cross-correlation functions of at most two, is proposed. By relaxing the maximum cross-correlation values to two, the new two-dimensional (2D) codes provide larger code cardinality for accommodating more subscribers and support heavier code weight for better code performance. The traditional chip-synchronous assumption used in the analyses of optical codes gives a pessimistic performance upper bound, while the newer chip-asynchronous assumption offers a more accurate performance. The performance of the new 2D codes is here analyzed under both assumptions for comparison. Under certain conditions, our results show that the new wavelength-time codes outperform our recently reported multiple-wavelength OOCs and 2D codes, which were based 1D OOCs of cross-correlation functions of at most one and two, respectively.en_US
dc.description.tableofcontentsChapter 1 Introduction 1 1.1 Background 1 1.2 Fiber-Optic CDMA Communication System 2 1.3 Outline of Thesis 3 Chapter 2 Construction of new 2D codes 5 2.1 Introduction 5 2.2 Basic algorithm 5 2.3 Construction of 2-D Code 7 2.4 Cardinality 8 2.5 Correlation Properties 10 Chapter 3 Performance Analysis 12 3.1 Chip-Synchronous Assumption 12 3.1.1 Hit Probability for Odd Weight 13 3.1.2 Hit Probability for Even Weight 13 3.1.3 Error Probability Derivation 14 3.2 Chip-Asynchronous Assumption 15 3.3 Numerical Examples 16 Chapter 4 4.1 Conclusions 28 4.2 Future Works 28 Appendix I 29 Appendix II 32 References 34en_US
dc.titleA new Family of Wavelength-Time Codes for Fiber-Optic CDMA Systemsen_US
dc.typeThesis and Dissertationzh_TW
item.openairetypeThesis and Dissertation-
item.fulltextno fulltext-
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