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標題: 光纖分碼多工系統之波長時間碼之設計
A new Family of Wavelength-Time Codes for Fiber-Optic CDMA Systems
作者: 王泰傑
Wang, Tai-Chien
關鍵字: 波長時間碼;wavelength-time;光纖分碼多工;O-CDMA
出版社: 電機工程學系所
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In 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.
其他識別: U0005-1308200814020500
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