Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/8197
DC FieldValueLanguage
dc.contributor.advisor楊谷章zh_TW
dc.contributor.advisorGuu-Chang Yangen_US
dc.contributor.author蘇銘基zh_TW
dc.contributor.authorSu, Ming-Jien_US
dc.date2003zh_TW
dc.date.accessioned2014-06-06T06:41:10Z-
dc.date.available2014-06-06T06:41:10Z-
dc.identifier.urihttp://hdl.handle.net/11455/8197-
dc.description.abstract一種在多載波直接序列分碼多工(MC/DS-CDMA)的系統中獲取二維正交可變展頻因子(OVSF)碼之新穎樹狀結構產生方法被提出來。此種新方法是根據格瑞碼(Gray code)之標籤以達到保有在不同速率及展頻因子間之正交性。每個二維正交可變展頻因子碼均有獨特之格瑞碼標籤。所提出的是一種有效率且不需搜尋整個樹狀結構即可決定某一碼是否為另一碼之母碼或子碼的方法。再者,可藉由格瑞索引矩陣(Gray index matrix),使每個二維正交可變展頻因子碼可以直接經由產生矩陣(generation matrix)來產生,而不需反覆地使用樹狀結構來產生。zh_TW
dc.description.abstractA new tree-structured generation method for obtaining two-dimensional orthogonal variable spreading factor (OVSF) codes that preserve orthogonality between different rates and spreading factors (SF) based on Gray code labels in a multicarrier direct-sequence CDMA (MC/DS-CDMA) system is presented. Each 2D OVSF code is uniquely associated with a Gray code label. An efficient method to decide if the code is a mother code or children code of the other code without searching an entire code tree is proposed. Furthermore, by taking advantage of the Gray code labeling, each 2D OVSF code can be generated directly from a generation matrix instead of being generated recursively using a tree structure.en_US
dc.description.tableofcontents第一章 緒論 1.1 背景 1.2 章節簡介 第二章 二維正交碼 2.1 前言 2.2 二維正交碼之建構 2.2.1 A (i) 2 k╳k之建構 2.2.2 α大於等於1的A (i) 2 k╳(k+α)之建構 2.3 二維正交可變展頻因子碼 之樹狀結構 2.4 結論 第三章 編碼器之演算法 3.1 前言 3.2 二維正交可變展頻因子碼之格瑞索引矩陣 3.3 二維正交可變展頻因子碼之產生矩陣 3.4 二維正交可變展頻因子碼(M=N)的產生 3.5 二維正交可變展頻因子碼(M≠N)的產生 3.6 結論 第四章 結論 參考文獻zh_TW
dc.language.isoen_USzh_TW
dc.publisher電機工程學系zh_TW
dc.subjectEncoderen_US
dc.subject編碼器zh_TW
dc.subject2Den_US
dc.subjectOVSF Codesen_US
dc.subjectMulticarrieren_US
dc.subjectMulticarrier DS-CDMAen_US
dc.subject二維zh_TW
dc.subject正交可變因子碼zh_TW
dc.subject多載波zh_TW
dc.subject多重載波直接序列分碼多工zh_TW
dc.title應用二維正交碼於多重載波直接序列分碼多工系統之編碼器設計zh_TW
dc.titleEncoder Designs of 2D OVSF Codes for Multicarrier DS-CDMA Systemsen_US
dc.typeThesis and Dissertationzh_TW
item.languageiso639-1en_US-
item.openairetypeThesis and Dissertation-
item.cerifentitytypePublications-
item.grantfulltextnone-
item.fulltextno fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
Appears in Collections:電機工程學系所
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