Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/8822
標題: 採用相同位元功率假設之雙碼重光纖分碼多工系統
Double-Weight Optical CDMA Systems With The Same-Bit-Power Assumption
作者: 陳志豪
Chen, Chih-Hao
關鍵字: CDMA;分碼多工;Variable-Weight;可變重碼
出版社: 電機工程學系所
引用: [1] G. Kramer and G. Pesavento, “Ethernet passive optical network (EPON): Building a next-generation optical access network,” IEEE Trans. Commun. Mag., vol. 40, no. 2, pp. 66-73, Feb. 2002. [2] B.G. Ahn and Y. Park, “A symmetric-structure CDMA-PON system and its implementation,” IEEE Photon. Technol. Lett., vol. 14, no. 2, pp. 1381-1383, Sep. 2002. [3] H. -W. Hu, H.-T Chen, G,-C. Yang and W. C. Kwong, “Synchronous Walsh-based bipolar-bipolar code for CDMA passive optical networks,” J. Lightw. Technol., vol. 25, no. 8, pp. 1910-1917, Aug. 2007. [4] G.-C. Yang and W.C. Kwong, Prime Codes With Applications to CDMA Optical and Wireless Networks, Artech House, Norwood, MA, 2002. [5] Optical Code Division Multiple Access: Fundamental and Applications, ed.: P.R. Prucnal, Taylor & Francis Books, New York, 2006. [6] V. Baby, W.C. Kwong, C.-Y. Chang, G.-C. Yang, and P.R. Prucnal, “Performance analysis of variable-weight multilength optical codes for wavelength-time O-CDMA multimedia systems,” IEEE Trans. Commun., vol. 55, pp. 1325-1333, Jul. 2007. [7] G.-C. Yang, “Variable-weight optical orthogonal codes for CDMA network with multiple performance requirements, ”IEEE Trans. Commun., vol. 44, pp. 47-55, Jan. 1996. [8] F.-R. Gu and J. Wu, “Construction and performance analysis of variable weight optical orthogonal codes for asynchronous optical CDMA systems,” J. Lightw. Technol., vol. 23, pp. 740-748, Feb. 2005. [9] H. Beyranvand, B.M. Ghaffari and J.A. Salehi, “Multirate, differentiated-QoS, and multilevel fiber-optic CDMA system via optical logic gate elements-Part III: Variable-weight equal-energy (multilevel) OCDMA system”, J. Lightw Technol., vol. 27, pp. 4348-4359, Oct. 2009. [10] F. R. K. Chung, J. A. Salehi, and V. K. Wei , “Optical orthogonal codes: Design, analysis, and application,” IEEE Trans. Info. Theory., vol. 35, no. 5, pp. 595-604, May. 1989. [11] G.-C. Yang and T. Fuja, “Optical orthogonal codes with unequal auto- and cross-correlation constrains,” IEEE Trans. Info. Theory., vol. 41, no. 1 pp. 96-106, Jan. 1995. [12] X. Wang and K. Kitayama, “Analysis of beat noise in coherent and incoherent time-spreading OCDMA,” J. Lightw. Technol., vol. 22, no. 10, pp. 2226-2235, Oct. 2004. [13] T. M. Bazan, D. Harle, and I. Andonovic, “Performance analysis of 2-D time-wavelength OCDMA systems with coherent light sources: Code design considerations,” J. Lightw. Technol., vol. 24, no. 10, pp. 3583-3589, Oct. 2006. [14] C. -S. Bres, Y.-K. Huang, D. Rand, I. Glesk, P. R. Prucnal, T. M. Bazan, C. Michie, D. Harle, and I. Andonovic, “ On the experimental characterization of beat noise in 2-D time-spreading wavelength-hopping OCDMA systems,” IEEE Photon. Technol. Lett., vol. 18, no. 21, pp. 2314-2316, Nov. 2006. [15] J.-J. Chen and G.-C. Yang, “CDMA fiber-optic systems with optical hard limiters,” J. Lightw. Technol., vol. 18, no. 7, pp. 950-958, Jul. 2001. [16] A. Leon-Garcia, Probability and Random Process for Electrical Engineering, 2nd ed Reading, Addison-Welsly, 1994. [17] C. -C, Hsu, 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, pp. 762-768, May. 2008. [18] D. Lay. Linear Algebra and Its Applications. Reading, MA: Addison-Welsly, 1994.
摘要: 
在這高速率傳輸且多樣化的時代,如何提供快速且高品質的多媒體通訊服務為重要的課題。在光纖分碼多工系統中,為了要滿足不同服務質量的品質需求,以往可變碼重光纖碼都是採用相同碼片功率之假設下進行討論跟分析。為了要考慮傳送光纖功率的限制,我們提出了光纖分碼多工系統採用傳送相同位元功率的課題下做討論。在本篇論文中,我們針對雙碼重光纖分碼多工系統採用傳送相同位元功率和採用相同碼片功率的系統表現作比較討論。我們設計了一種新的、較準確的分析模型來討論雙碼重光纖分碼多工系統的系統效能。最後,我們結果顯示出,較重碼重碼之系統效能表現不一定比較輕碼重之系統效能表現來的好。在相同位元功率的假設下,較輕碼重之系統效能將獲得改善,並且打破以往使用碼重越大系統效能越好的觀念。

Communication technologies are expected to provide multiple-rate transmission and support the growing popularity of multimedia services flexibly and efficiently. To provide differential quality-of-service in optical code-division multiple access, variable-weight optical codes were designed and analyzed under a conventional assumption of identical power in every optical pulses (i.e., same chip power). To account for power limit of laser sources, we assume the use of same optical power in each bit duration (i.e., same bit power) in this thesis. For illustration, we focus our study on double-weight codes under both same-chip-power and same-bit-power assumptions. A new and accurate performance-analytical model for double-weight codes is developed and validated with computer simulation. We show that heavy-weight codes do not always perform better than light-weight codes under the same-bit-power assumption, contrary to previous findings under the same-chip-power assumption.
URI: http://hdl.handle.net/11455/8822
其他識別: U0005-1308201012262200
Appears in Collections:電機工程學系所

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