Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/7823
DC FieldValueLanguage
dc.contributor.advisor陳後守zh_TW
dc.contributor.advisorChen Hou-Shouen_US
dc.contributor.author羅謙翰zh_TW
dc.contributor.authorLo, Chain-Hanen_US
dc.date2004zh_TW
dc.date.accessioned2014-06-06T06:40:36Z-
dc.date.available2014-06-06T06:40:36Z-
dc.identifier.urihttp://hdl.handle.net/11455/7823-
dc.description.abstract本篇論文主要研究哈達瑪正交分頻多工轉換系統中之格雷序列。在傳統正交分頻多工系統能夠利用由里得-米勒碼產生之格雷序列使得其峰均值比保持最大到達2。因此,我們參考傳統的正交分頻多工系統產生格雷序列的方法應用到哈達瑪正交分頻多工轉換系統後,發現當使用BPSK調變時,輸入一階里得-米勒碼R(1,m)或其某些R(1,m)之平移,但其平移仍屬於二階里得-米勒碼R(2,m)時,這些序列能夠使其最大峰均值比之值保持在$2$以下。進一步分析哈達瑪正交分頻多工轉換系統中峰均值比小於2之陪集的形式時,我們發現由這些陪集所產生之哈達瑪正交分頻多工系統之格雷序列與正交分頻多工系統中格雷序列所出現的陪集有相似之處。而且哈達瑪正交分頻多工轉換系統 中格雷序列的數目多於正交分頻多工系統內的格雷序列。最後,我們以圖形的方法來描述其格雷序列所出現的陪集型式。zh_TW
dc.description.abstractThe use of block coding method, i.e., the Golay Complementary Sequences and Reed-Muller codes, is guaranteed to reduce the peak-to-average power ratio (PAPR) below two in Orthogonal Frequency-Division Multiplexing (OFDM) systems. In this thesis, we investigate the Golay Complementary Sequences in Walsh-Hadamard transformed OFDM (WHT-OFDM) systems. By computer search, we find that the Golay Complementary Sequences also exist in WHT-OFDM systems and the number of Golay Complementary Sequences in WHT-OFDM systems seems to be larger than those in OFDM systems. In OFDM systems, these Golay Sequences are the cosets of the first Reed-Muller codes within the second order Reed-Muller codes. This motivates us to study the connection between the Golay Sequences and the cosets of first order Reed-Muller codes in WHT-OFDM systems. We observe that the form of Golay Complementary Sequences in WHT-OFDM systems are like those in OFDM systems and we will use the graphic form to show some constructions of Golay sequences in WHT-OFDM.en_US
dc.description.tableofcontents第一章 緒論 第二章 理論基礎 2.1 正交分頻多工系統 2.2 相關函數與迴旋總合 2.3 里得-米勒碼 2.4 格雷序列 第三章 兩段式正交轉換 3.1 兩段式正交轉換 3.2 哈達瑪正交分頻多工轉換系統之架構 3.3 哈達瑪正交分頻多工轉換系統的高峰均值比問題 第四章 哈達瑪正交分頻多工轉換系統之格雷序列 4.1 哈達瑪正交分頻多工轉換系統瞬間功率之分析 4.2 哈達瑪正交分頻多工轉換系統之格雷互補序列 第五章 結論zh_TW
dc.language.isoen_USzh_TW
dc.publisher電機工程學系zh_TW
dc.subjectPAPRen_US
dc.subject峰均值比zh_TW
dc.subjectOFDMen_US
dc.subjectWHT-OFDMen_US
dc.subjectGolay complementary sequencesen_US
dc.subjectReed-Muller Codesen_US
dc.subject正交分頻多工系統zh_TW
dc.subject哈達瑪正交分頻多工轉換系統zh_TW
dc.subject格雷互補序列zh_TW
dc.subject里得-米勒碼zh_TW
dc.title哈達瑪正交分頻多工轉換系統中格雷互補序列之研究zh_TW
dc.titleInvestigation of Golay Complementary sequences in WHT-OFDM systemen_US
dc.typeThesis and Dissertationzh_TW
item.openairetypeThesis and Dissertation-
item.fulltextno fulltext-
item.cerifentitytypePublications-
item.grantfulltextnone-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.languageiso639-1en_US-
Appears in Collections:電機工程學系所
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