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博碩士論文 etd-0804104-204410 詳細資訊
Title page for etd-0804104-204410
論文名稱 Title |
光通訊分碼多工編碼研究 Design of New Signature Codes for Optical CDMA Systems |
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系所名稱 Department |
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畢業學年期 Year, semester |
語文別 Language |
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學位類別 Degree |
頁數 Number of pages |
115 |
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研究生 Author |
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指導教授 Advisor |
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召集委員 Convenor |
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口試委員 Advisory Committee |
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口試日期 Date of Exam |
2004-07-14 |
繳交日期 Date of Submission |
2004-08-04 |
關鍵字 Keywords |
分碼多工編碼、光通訊 OCDMA |
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統計 Statistics |
本論文已被瀏覽 5633 次，被下載 0 次 The thesis/dissertation has been browsed 5633 times, has been downloaded 0 times. |
中文摘要 |
分碼多工展頻碼設計有兩大重點 : 一為展頻碼相關函數表現，另一為碼組所支援的用戶數。展頻碼相關函數表現會直接反映在系統性能表現上，而用戶數的多寡則表現出使用此展頻碼系統的用戶容量。由於在光通訊分碼多工系統中，我們所使用的展頻碼是由0、1所組成的序列，所以在展頻碼相關特性表現上沒辦法達到完全理想的相關表現，這在本篇論文第二章中，我們已證明這個結論。根據在第二章中所得到的結論，以最佳相關函數表現來重新對光通訊展頻碼作一定義。最佳光通訊展頻碼應為在自相關表現上為一理想的自相關函數，而在互相關表現上雖不能達到完全理想，但我們將旁瓣數降到最低，且旁瓣幅度最大為1。 根據此最佳光通訊展頻碼的要求，我們在第三章中提出光通訊展頻碼，在第三章中我們將會詳盡的說明光通訊互補碼的編碼產生方式，並證明其在自相關及互相關表現上符合我們對最佳光通訊展頻碼的要求。接著我們將分析使用此展頻碼在分碼多工系統上的性能表現，在光通訊分碼多工系統中，影響性能表現最大的因素便是用戶間的干擾，但由於光通訊互補碼再互相關表現上優於其他一般傳統展頻碼，所以我們可以從結論中清楚的看出在性能表現上優於一般光通訊展頻碼。 |
Abstract |
The most two important concern in CDMA code design, one is the spreading code correlation performance, and another one is the number of supporting users. The correlation performance will influence the system BER (bit error rate) directly, and the supporting user number will express the system capacity. In optical-CDMA system, optical spreading code it is impossible to achieve idea correlation performance, especially in cross-correlation. Because of the optical sequence is consisted of 0、1 . We also prove it in chapter two. For reducing the interference of multi-user, we propose a new signature code in chapter three. The new code design approaching has a perfect correlation performance. It can achieve ideal auto-correlation. And in cross-correlation, although it can’t be ideal completely. We let the sidelobe number in cross-correlation be the minimum and constraint the one amplitude is 1. We also analysis the performance of optical-CDMA with the new signature code in chapter four. Because of it has perfect correlation characteristics, so we can clearly find the system with the new signature code has the better performance. |
目次 Table of Contents |
中文摘要 英文摘要 誌謝 目錄 變數列表 圖表目錄 第一章 導論 1-1 研究動機 1-2 論文架構 第二章 光通訊分碼多工系統及展頻碼簡介 2-1 光通訊分碼多工系統介紹 2-2 光通訊展頻碼介紹 第三章 光通訊展頻碼之相關函數下界證明 3-1 單一光通訊展頻碼之相關函數下界證明 3-2 最佳光通訊單一展頻碼 3-3 光通訊多子碼展頻碼之相關函數下界證明 3-4 光通訊多子碼展頻碼之子碼個數限制 第四章 最佳光通訊互補碼 4-1 參數介紹 4-2 最佳光通訊互補碼之相關特性證明 4-3 最佳光通訊互補碼產生方式 第五章 使用光通訊互補碼的分碼多工系統之性能分析 5-1 光通訊互補碼分碼多工系統架構 5-2 使用光通訊互補碼的分碼多工系統之圖解分析 5-3 使用光通訊互補碼的分碼多工系統之理論分析 第六章 分析比較與結論 6-1光通訊互補碼相關特性及用戶數比較 6-2 Matlab相關函數模擬 6-3 結論 參考文獻 |
參考文獻 References |
[1] Salehi, J.A.,”Code division multiple-access techniques in optical fiber networks. I. Fundamental principles;” IEEE Transactions on, Communications, Volume: 37, Issue: 8, Aug. 1989, Pages:824 – 833 [2] Salehi, J.A.; Brackett, C.A.; ”Code division multiple-access techniques in optical fiber networks. II. Systems performance analysis,” Communications, IEEE Transactions on , Volume: 37 , Issue: 8 , Aug. 1989,Pages:834 – 842 [3] Prucnal, P.; Santoro, M.; Ting Fan; ”Spread spectrum fiber-optic local area network using optical processing,” Lightwave Technology, Journal of ,Volume: 4 , Issue: 5 , May 1986 , Pages:547 – 554 [4] Wei Huang; Nizam, M.H.M.; Andonovic, I.; Tur, M.; ”Coherent optical CDMA (OCDMA) systems used for high-capacity optical fiber networks-system description, OTDMA comparison, and CDMA/WDMA networking,” Lightwave Technology, Journal of ,Volume: 18 , Issue: 6 , June 2000 ,Pages:765 - 778 [5] Chung, F.R.K.; Salehi, J.A.; Wei, V.K.; ”Optical orthogonal codes: design, analysis and applications,” Information Theory, IEEE Transactions on ,Volume: 35 , Issue: 3 , May 1989 , Pages:595 – 604 [6] Salehi, J.A. ”Emerging optical code-division multiple access communication systems,” IEEE Network, Volume: 3, Issue: 2, Year: Mar 1989 [7] Chung, H.; Kumar, P.V. ”Optical orthogonal codes-new bounds and an optimal construction,” Information Theory, IEEE Transactions on, Volume: 36, Issue: 4, Jul 1990 [8] Fuji-Hara, R.; Miao, Y. ”Optical orthogonal codes: their bounds and new optimal constructions,” Information Theory, IEEE Transactions on, Volume: 46, Issue: 7, Nov 2000, Page(s): 2396-2406 [9] Ge, G.; Yin, J. ”Constructions for optimal (v, 4, 1) optical orthogonal codes,” Information Theory, IEEE Transactions on, Volume: 47, Issue: 7, Nov 2001 [10] Yanxun Chang; Fuji-Hara, R.; Ying Miao, “Combinatorial constructions of optimal optical orthogonal codes with weight 4,” Information Theory, IEEE Transactions on, Volume: 49, Issue: 5, May 2003 [11] Holmes, A.S.; Syms, R.R.A.; ”All-optical CDMA using `quasi-prime' codes,” Lightwave Technology, Journal of , Volume: 10 , Issue: 2 , Feb. 1992, [12] Shaar, A.A.; Woodcock, C.E.; Davies, P.A.; ”Prime sequences for asynchronous pulse repetition interval agile radar,” Aerospace and Electronic Systems, IEEE Transactions on ,Volume: 35 , Issue: 2 , April 1999 , Pages:543 – 548 [13] Kavehrad, M.; Zaccarin, D.; “Optical code-division-multiplexed systems based on spectral encoding of noncoherent sources,” Lightwave Technology, Journal of ,Volume: 13 , Issue: 3 , March 1995 ,Pages:534 – 545 [14] Tancevski, L.; Andonovic, I.; Tur, M.; Budin, J.; ”Hybrid wavelength hopping/time spreading code division multiple access systems,” Optoelectronics, IEE Proceedings- ,Volume: 143 , Issue: 3 , June 1996 ,Pages:161 – 166 [15] Tancevski, L.; Andonovic, I.; Tur, M.; Budin, J.; ”Massive optical LANs using wavelength hopping/time spreading with increased security,” Photonics Technology Letters, IEEE ,Volume: 8 , Issue: 7 , July 1996 ,Pages:935 – 937 [16] Guu-Chang Lang; Fuja, T.E.; ”Optical orthogonal codes with unequal auto- and cross-correlation constraints,” Information Theory, IEEE Transactions on ,Volume: 41 , Issue: 1 , Jan. 1995 ,Pages:96 – 106 [17] Yang, G.-C.; ”Some new families of optical orthogonal codes for code-division multiple-access fibre-optic networks,” Communications, IEE Proceedings- ,Volume: 142 , Issue: 6 , Dec. 1995 ,Pages:363 – 368 [18] Xhi-Shun Weng; Jingshown Wu , ”Perfect difference codes for synchronous fiber-optic CDMA communication systems,” Lightwave Technology, Journal of ,Volume: 19 , Issue: 2 , Feb. 2001 ,Page(s): 186-194 [19] Sangin Kim; Kyungsik Yu; Park, N.; ”A new family of space/wavelength/time spread three-dimensional optical code for OCDMA networks,” Lightwave Technology, Journal of ,Volume: 18 , Issue: 4 , April 2000 ,Pages:502 – 511 [20] Kwong, W.C.; Guu-Chang Yang; ”Design of multilength optical orthogonal codes for optical CDMA multimedia networks,” Communications, IEEE Transactions on ,Volume: 50 , Issue: 8 , Aug. 2002 ,Pages:1258 – 1265 [21] Jian-Guo Zhang, ”Optical CDMA codes for use in a lightwave communication network with multiple data rates,” Optical communication, Vol. 13 , No. 3 , May-June 2002 |
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