請用此 Handle URI 來引用此文件:
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/35243
完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 吳靜雄(Jingshown Wu) | |
dc.contributor.author | Cheing-Hong Lin | en |
dc.contributor.author | 林建宏 | zh_TW |
dc.date.accessioned | 2021-06-13T06:45:15Z | - |
dc.date.available | 2005-08-01 | |
dc.date.copyright | 2005-08-01 | |
dc.date.issued | 2005 | |
dc.date.submitted | 2005-07-29 | |
dc.identifier.citation | [1] P. R. Prucnal, M. A. Santoro, and T. R. Fan, “Spread spectrum fiber-optic local area network using optical processing,” J. Lightwave Technol., Vol. LT-4, pp. 547~554, May 1986.
[2] W. C. Kwong, P. A. Perrier, and P. R. Prucnal, “Performance comparison of asynchronous and synchronous code-division multiple-access techniques for fiber-optic local area networks,” IEEE Trans. Commun., Vol. 39, pp.1625-1634, Nov. 1991. [3] J. A. Salehi, “Code division multiple-access techniques in optical fiber networks-Part I: Fundamental principles,” IEEE Trans. Comm., Vol. 37, pp. 824-833, Aug. 1989. [4] J. A. Salehi, and C. A. Brackett, “Code division multiple-access techniques in optical fiber networks-Part II: System performance analysis,” IEEE Trans. Comm., Vol. 37, pp. 834-842, Aug. 1989. [5] F. R. K. Chung, J. A. Salehi, and V. K. Wei, “Optical orthogonal codes: Design, analysis, and applications,” IEEE Trans. Inform. Theory, Vol. 35, pp. 595-604, May 1989. [6] Habib Fathallah, Leslie A. Rusch and Sophie LaRochelle, “Passive optical fast frequency-hop CDMA communications system,” J. Lightwave Technol., Vol. 17, No. 3, pp. 397~405, March 1999. [7] Elie Inaty, Hossam M. H. Shalaby and Paul Fortier, “On the cutoff rates of a multiclass OFFH-CDMA system,” IEEE Trans. Comm., Vol. 53, No. 2, pp. 323-334, Feb. 2005. [8] M. Kavehrad and D. Zaccarin, “Optical code-division-multiplexed systems based on spectral encoding of noncoherent sources,” J. Lightwave Technol., Vol. 13, No. 3, pp. 534~545, March 1995. [9] R. Fuji-Hara and Y. Miao,” Optical orthogonal codes: Their bounds and new optimal constructions,” IEEE Trans. Inform. Theory, Vol. 46, pp. 2396-2406, Nov. 2000. [10] J. G. Zhang, “Design of a special family of optical CDMA address codes for fully asynchronous data communications,” IEEE Trans. Commun., Vol. 47, pp. 967-973, July 1999. [11] T. Ohtsuki, “Performance analysis of direct-detection optical asynchronous CDMA systems with double optical hard-limiters,” J. Lightwave Technol., Vol. 15, pp. 452~457, March 1997. [12] Chi-Shun Weng and Jingshown Wu, “Optical orthogonal codes with nonideal cross correlation,” J. Lightwave Technol., Vol. 19, No. 12, pp. 1856~1863, Dec. 2001. [13] Kavehrad. M., and Zaccarina. D., “Optical code-division-multiplexed system based on spectral encoding of non-coherent sources”, J. Lightwave Technol., Vol. 13, pp. 534~545, March 1995. [14] D. Zaccarin and M. Kavehrad, “An optical CDMA system based on spectral encoding of LED,” IEEE Photon. Technol. Lett., Vol, 4, pp. 479-482, Apr. 1993. [15] P. A. Davies and A. A. Shaar, “Asynchronous multiplexing for optical-fibre local-area network,” Elect. Lett., vol. 19, pp. 390—392, May 1983. [16] P. R. Prucnal, M. A. Santoro, and T. R. Fan, “Spread-spectrum fibre optic local area network using optical processing,” in FOC/LAN, 1986. [17] J. A. Salehi and C. A. Brackett, “Code division multiple access techniques in optical fiber networks (Part 2),” IEEE Transactions on Communications, vol. 37, pp. 824—842, August 1989. [18] Zou Wei and H. Ghafouri-Shiraz, “IP routing by an optical spectral-amplitude-coding CDMA network,” IEE Proc. Commun., Vol. 149, No. 5, Oct. 2002. [19] D. D. Sampson and D. A. Jackson, “Coherent optical fiber communications system using all-optical correlation processing,’ Opt. Lett., Vol. 15, pp. 585-587, 1990. [20] M. E. Marhic and Y. L. Chang, “Pulse coding and coherent decoding in fiber-optic ladder networks,” Electron. Lett., Vol. 25, pp. 1535-1536, 1989. [21] R. A. Griffin, D. D. Sampson, and D. A. Jackson, “Optical phase coding for code-division multiple access networks,” IEEE Photon. Technol. Lett., Vol. 4, No. 12, pp. 1401-1404, Dec. 1992. [22] G. J. Pendock and D. D. Sampson, ”Capacity of coherence-multiplexed CDMA networks,” Optics Comm., pp. 109~117, Nov. 1997. [23] Janet L. Brooks, Robert H. Wentworth, Robert C. Youngquist, Moshe Tur, Byoung Yoon Kim, and H. J. Shaw, ”Coherence Multiplexing of Fiber-Optic Interferometric Sensors,” J. Lightwave Technol., Vol. LT-3, No. 5, pp. 1062~1071, Oct. 1985. [24] Robert H. Wentworth,”Theoretical Noise Performance of Coherence-Multiplexed Interferometric Sensors,” J. Lightwave Technol., Vol. 7, No. 6, pp. 941~956, Jun. 1989. [25] J. W. Goodman, Statistical Optics. New York: Wiley, 1985. [26] Moshe Tur, Ehud Shafir, and Kjell Blotekjaer, ”Source-Induced Noise in Optical Systems Driven by Low-Coherence Sources,” J. Lightwave Technol., Vol. 8, No. 2, pp. 183~189, Feb. 1990. [27] P. E. Green, “Fiber Optic Networks”, Prentice-Hall, New Jersey, 1993. [28] L. Nguyen, B. Aazhang and J. F. Young, “All-optical CDMA with bipolar codes,” Electron. Lett., Vol. 31, No. 6, pp. 469-470, 16th March 1989. [29] Zou Wei, H. Ghafouri-Shiraz, and H. M. H. Shalaby, “Performance analysis of optical spectral-amplitude-coding CDMA systems using a super-fluorescent fiber source,” IEEE Photon. Technol. Lett., Vol. 13, No. 8, pp. 887-889, Aug. 2001. [30] A. Grunnel-Jepsen, A. E. Johnson, E. S. Maniloff, T. W. Mossberg, M. J. Munroe and J. N. Sweetser, “Fiber Bragg grating based spectral encoder/decoder for lightwave CDMA,” Electron. Lett., Vol. 35, No. 13, pp. 1096-1097, 24th June 1999. [31] Xiang Zhou, H.H.M. Shalaby, Chao Lu and Teehiang Cheng, “Code for spectral amplitude coding optical CDMA systems,” Electronics Letters, Vol. 36, No. 8, pp. 728~729, 13th, April 2000. [32] Zou 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, Sept. 2001. [33] Chao-Chin Yang and Jen-Fa Huang, “Two-dimensional M-matrices coding in spatial/frequency optical CDMA networks,” IEEE Photonics Technology Letters, Vol. 15, No. 1, pp. 168~170, Jan. 2003. [34] R. A. Griffin, D. D. Sampson and D. A. Jackson, “Demonstration of data transmission using coherent correlation to reconstruct a coded pulse sequence”, IEEE Photonics Tech. Letter, Vol. 4, No. 5, May, 1992. [35] P. R. Prucnal, M. A. Santoro, and T. R. Fan, “Spread spectrum fiber-optic local area network using optical processing,” J. Lightwave Technol., Vol. LT-4, pp. 547~554, May 1986. [36] W. C. Kwong, P. A. Perrier, and P. R. Prucnal, “Performance comparison of asynchronous and synchronous code-division multiple-access techniques for fiber-optic local area networks,” IEEE Trans. Commun., Vol. 39, pp.1625-1634, Nov. 1991. [37] Cheing-Hong Lin, Jingshown Wu, Hen-Wai Tsao, and Chun-Liang Yang, “Spectral Amplitude-Coding Optical CDMA System Using Mach–Zehnder Interferometers,” J. Lightwave Technol., Vol. 23, No. 4, pp. 1543~1555, Apr. 2005. [38] J. P. Goedgebuer, Andre Hamel, Henri Porte and Nadia Butterlin,“ Analysis of optical crosstalk in coherence multiplexed systems employing a short coherence laser diode with arbitrary power spectrum,” IEEE Journal of Quantum Electron., Vol. 26, No. 7, pp. 1217~1226, July, 1990. [39] A. Meijerink, G. H. L. M. Heideman and W. C. van Etten, “A generalization of a coherence multiplexing system,” 2000 symposium on Communication and Vehicular Technology, SCVT-200, 19 Oct. 2000, pp. 6~13. [40] Chi-Shun Weng and Jingshown Wu, “Perfect difference codes for synchronous fiber-optic CDMA communication systems,” J. Lightwave Technol., Vol. 19, pp. 186 -194, Feb. 2001. [41] J. Singer, “A theorem in finite projective geometry and some applications to number theory,” Trans. Amer. Math. Soc., Vol. 43, pp. 377-385, 1938. [42] Cheing-Hong Lin, Jingshown Wu, and Chun-Liang Yang, “Non-coherent Spatial/Spectral Optical CDMA system with 2-Dimensional Perfect Difference Codes ,” in revision procedure of J. Lightwave Technol. [43] Elwyn D. J. Smith, Richard J. Blaikie and Desmond P. Taylor, “Performance enhancement of spectral amplitude-coding optical CDMA using pulse-position modulation,” IEEE Trans. Commun., Vol. 46, No. 3, pp. 1176~1185, Sep. 1998. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/35243 | - |
dc.description.abstract | 光分碼多工系統的研究從開始至今已經約有二十年的時間,此種系統的優點主要在於其可容許不同的使用者同時使用相同的頻帶,並且在傳送資料時可提供高度的資訊安全。光分碼多工系統的效能主要是受到多使用者干擾(multi-user interference, MUI)的影響,對於使用時域編碼之非同步光分碼多工系統(time-spreading asynchronous OCDMA)而言,多使用者干擾不但無法避免,而且會嚴重的影響系統整體之效能。近年來,由於具有非同調光源(non-coherent light source)之光分碼多工系統,可藉由編碼的方式來消除多使用者干擾,是以引發許多相關的研究。然而,由於非同調光源會產生相位引發強度雜訊(phase-induced intensity noise, PIIN),使得具有非同調光源之光分碼多工系統的效能受到嚴重影響。
傳統上具有非同調光源之光分碼多工系統主要分有三類,分別是同調多工系統(coherent multiplexing system)、頻譜振幅編碼系統(spectral-amplitude-coding system, i.e. SAC system)及二維頻譜/空間編碼系統(two-dimensional spectral/spatial coding system),為了提高具有非同調光源之光分碼多工系統的效能,本篇論文分別提出了三個新的系統架構以抑制由相位所引發之強度雜訊。就同調多工系統而論,我們所提出之系統係使用一脈衝寬頻光源(pulsed broadband light source)來取代傳統同調多工系統所使用之具有連續波之寬頻光源(continuous wave broadband light source),以降低各個使用者之信號碰撞的機率,並藉此抑制由相位引發之強度雜訊,以提昇系統之整體效能。 就頻譜振幅編碼系統而論,我們係提出了部分變異質數碼(partial modified prime codes)及對應之頻譜振幅編碼系統。其中,該部分變異質數碼係依據變異質數碼而推導出來的,是以其交叉相關係數(cross correlation)係小於或等於一。由於部分變異質數碼之交叉相關係數在大部分情況下是等於零,是以與其他頻譜振幅編碼系統相比,我們所提出之頻譜振幅編碼系統係具有較低之信號撞擊機率,故可進一步降低相位引發之強度雜訊所造成的影響。此外,藉由使用馬赫-曾德爾干涉儀(Mach-Zehnder interferometers),我們所提出之頻譜振幅編碼系統亦可完全消除多使用者干擾。 最後,為了改進二維頻譜/空間編碼系統的效能,我們提出二維完美相差碼(two-dimensional perfect difference codes)及其對應之二維頻譜/空間編碼系統。其中,該二維完美相差碼係依據一維完美相差碼而推導出來的,該一維完美相差碼原本係用於時域編碼同步光分碼多工系統(time-spreading synchronous OCDMA)之中。由於二維完美相差碼係具有一多使用者干擾相消特性(MUI cancellation property),並且其交叉相關係數係遠小於傳統之二維頻譜/空間碼,如最大面積矩陣碼(maximal-area matrices codes, i.e. M-matrices codes),是以我們所提出之二維頻譜/空間編碼系統可以同時除去多使用者干擾並抑制由相位引發之強度雜訊。此外,我們所提出之二維頻譜/空間編碼系統可容納之使用者個數,可隨著二維完美相差碼之空域碼長度增長而呈線性增加,目前傳統之二維頻譜/空間編碼系統仍無法達到此種效能。 依據數學分析及數值結果,本篇論文所提出之三種系統架構皆可有效的抑制由相位引發之強度雜訊並增加同時使用同一頻帶之使用者的數目。此外,我們亦使用一具有高度公信力的軟體工具”VPItransmissionMaker”,來驗證我們所提出之頻譜振幅編碼系統及二維頻譜/空間編碼系統的效能。 | zh_TW |
dc.description.abstract | Optical code division multiple access (OCDMA) systems have been investigated for about two decades. They have the advantage of providing multiple users to simultaneously access the same bandwidth with high-level security. In general, the performance of OCDMA systems is primarily affected by multi-user interference (MUI), which is unavoidable for asynchronous time-spreading OCDMA systems. In recent years, OCDMA systems with non-coherent light sources attract a lot of attention because MUI can be completely eliminated by coding. However, in these systems, due to the nature of non-coherent light sources, a phase-induced intensity noise (PIIN) is caused and the system performance is hence degraded severely.
Conventionally, there are three categories of OCDMA systems with non-coherent light sources, i.e. coherence multiplexing system, spectral-amplitude-coding (SAC) system and two-dimensional (2-D) spectral/spatial coding system. This thesis aims to improve the performance of these systems. Regarding the coherence multiplexing system, a novel system structure is proposed in this thesis to suppress PIIN and improve the system performance thereby. In the proposed system, we simply substitute the continuous wave broadband light source of the conventional coherence multiplexing system with a pulsed broadband light source to reduce the probability of beating from other users. In this way, the PIIN caused by other users is suppressed. As for the SAC system, we propose a family of newly constructed codes, named partial modified prime (PMP) codes, and a corresponding system structure. The PMP codes are a divided version of modified prime codes and thus have in-phase cross-correlation not larger than one. Because most of the in-phase cross-correlation between the PMP codes is zero, compared with the conventional SAC system, the beating probability of the proposed system is decreased considerably and thus the PIIN is further suppressed. Moreover, for elimination of MUI, Mach-Zehnder interferometers are employed in the proposed system. Lastly, for performance improvement of the 2-D spectral/spatial coding system, we propose 2-D perfect difference codes and its corresponding system. The 2-D perfect difference codes are derived in view of perfect different codes that originally used in a synchronous time-spreading OCDMA system. Since the 2-D perfect difference codes have a MUI cancellation property and cross-correlation much lower than that of conventional 2-D spectral/spatial codes, such as Maximal-area matrices (M-matrices) codes, the proposed system can completely eliminate the MUI and effectively suppress the PIIN. Moreover, the number of simultaneous users that can be accommodated in the proposed system can be increased almost linearly in proportion to the spatial code length of the 2-D perfect difference codes. It is unreachable for present 2-D spectral/spatial coding systems. In accordance with analysis and numerical results, all of the three proposed systems have better performance and can accommodate more simultaneous users than the conventional systems. In addition, the numerical results of the proposed systems using PMP codes and 2-D perfect difference codes are verified by using a well-known and highly recognized software tool, “VPItransmissionMaker.” | en |
dc.description.provenance | Made available in DSpace on 2021-06-13T06:45:15Z (GMT). No. of bitstreams: 1 ntu-94-D88942009-1.pdf: 5830612 bytes, checksum: 2b724e6f1132f6f1ed84aa326a21cf50 (MD5) Previous issue date: 2005 | en |
dc.description.tableofcontents | Table of Contents i
List of Tables iii List of Figures v Table of Abbreviations ix Abstract xi 1. Introduction 1 1.1 Coherence Multiplexing System……………………………………………2 1.2 Spectral-Amplitude-Coding System…………………………………………7 1.3 Two-Dimensional Spatial/Frequency Coding System………………………14 2. Coherent Multiplexing System with a Pulsed Non-coherent Light Source 21 2.1 Synchronous System with Pulsed Non-coherent Light Source……………..22 2.2 Asynchronous System with Pulsed Non-coherent Light Source……………28 2.3 System Employing On-Off Keying Scheme………………………………...32 2.4 Summary…………………………………………………………………….38 3. Spectral-Amplitude-Coding Optical CDMA System Using Mach-Zehnder Interferometers 39 3.1 Partial Modified Prime Codes……………………………………………….40 3.2 SAC Optical CDMA System Using PMP Codes……………………………46 3.3 Performance Analysis……………………………………………………….49 3.4 Numerical and Simulation Results………………………………………….62 3.5 Summary…………………………………………………………………….70 4. Non-coherent Spatial/Spectral Optical CDMA System with 2-Dimensional Perfect Difference Codes 71 4.1 2-D Perfect Difference Codes………………………………………………72 4.2 Optical CDMA System using 2-D Perfect Difference Codes………………79 4.3 Performance Analysis……………………………………………………….85 4.4 Numerical and Simulation Results………………………………………….96 4.5 Discussions of Parameter Setting………………………………………….105 4.6 Summary…………………………………………………………………...108 5. Conclusion 111 6. References 117 | |
dc.language.iso | en | |
dc.title | 具有非同調光源之光分碼多工系統之設計與分析 | zh_TW |
dc.title | Design and Analysis of Optical CDMA System with Non-Coherent Light Source | en |
dc.type | Thesis | |
dc.date.schoolyear | 93-2 | |
dc.description.degree | 博士 | |
dc.contributor.oralexamcommittee | 楊谷章(Guu-Chang Yang),李三良(San-Liang Lee),曹恒偉(Hen-Wai Tsao),王倫(Lon Wang),廖顯奎(S.K. Liaw) | |
dc.subject.keyword | 多使用者干擾,光分碼多工系統,非同調光源,相位引發強度雜訊, | zh_TW |
dc.subject.keyword | multi-user interference,OCDMA,non-coherent light source,phase-induced intensity noise, | en |
dc.relation.page | 123 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2005-07-29 | |
dc.contributor.author-college | 電機資訊學院 | zh_TW |
dc.contributor.author-dept | 電信工程學研究所 | zh_TW |
顯示於系所單位: | 電信工程學研究所 |
文件中的檔案:
檔案 | 大小 | 格式 | |
---|---|---|---|
ntu-94-1.pdf 目前未授權公開取用 | 5.69 MB | Adobe PDF |
系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。