Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/8226
標題: 光纖分碼多工系統之二維波長時間質數碼的設計
A New Design of Wavelength-Hopping Time-Spreading Prime Codes for Optical CDMA Systems
作者: 林曼芸
Lin, Man-Yun
關鍵字: 光纖分碼多工;Optical CDMA;開關鍵移分碼多工;載波跳躍質數碼;OOK;CHPC
出版社: 電機工程學系所
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摘要: 
近年來光纖分碼多工系統隨著波長跳躍–時間展頻技術的進步而更為普及。由於二維碼能提供較一維碼更多的碼個數,使得二維碼應用在光纖通訊系統的研究漸受重視。過去所討論的二維碼,可分為二類,一是探討在固定時槽個數時,藉由增加波長數目的增加來產生更多碼個數的二維碼。而另一類則是在固定波長數目的情形下,利用二維碼長度之增加來提供更多數目的二維碼。本論文將結合此兩類建構二維碼的觀念來設計一組新的二維碼,除了可以產生較大的碼個數外,更可彈性地藉由選擇增加波長或增加長度來大幅改善系統的效能。

As the advancement of wavelength-time codes, the use of two dimensional ap-proaches to generate wavelength-time codes has recently received some attention and has been widely studied. Moreover, the two dimensional codes have the advantage of extremely improving code cardinality more than one dimensional codes have. The (pk1 p¬k2, p, 0, 1) 2D wavelength-time codes proposed in this thesis has the property that the cross-correlation value is at most one. The construction is done by utilizing the constructed conception of the extended carrier-hopping prime codes and the original carrier-hopping prime codes. Hence the construction can enlarge the code size by increasing the number of wavelengths and the number of time slots, respec-tively. The advantage is that the new code scheme provides more flexible alternative of performance, bandwidth, and data rate.
URI: http://hdl.handle.net/11455/8226
其他識別: U0005-2008200819394000
Appears in Collections:電機工程學系所

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