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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 鐘嘉德(Char-Dir Chung) | |
| dc.contributor.author | Jy-Chin Liao | en |
| dc.contributor.author | 廖芝青 | zh_TW |
| dc.date.accessioned | 2022-11-24T09:25:04Z | - |
| dc.date.available | 2022-11-24T09:25:04Z | - |
| dc.date.copyright | 2021-08-10 | |
| dc.date.issued | 2021 | |
| dc.date.submitted | 2021-08-01 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/81640 | - |
| dc.description.abstract | "在現行的正交分頻多工(OFDM)系統中做數據解調時，領導信號(pilot symbols)經常穿插到均勻分布的子載波中以促進通道估測(channel estimation)。當分段頻散通道的衰減程度加劇時，基於廣義概度比檢定(GLRT)的原理，由等間隔擺放的領導符號輔助的通道估測能夠實現在同一個正交分頻多工塊中逐個符號的數據解調。為了進一步對抗更加衰減更加劇烈的分段頻散通道，採用單輸入多輸出(SIMO)天線分集系統可以增強基於廣義概度比檢定的解調性能。在本文中，對於所考慮的基於廣義概度比檢定的正交分頻多工單輸入多輸出系統解調，在固定和隨機分段頻散通道上採用各種二維的調變方式，分析推導出位元錯誤率（bit error rate, BEP）的上界和近似值，並通過模擬驗證其緊密性。數值分析顯示，當通道的衰減程度較小或單輸入多輸出系統的接收天線數足夠多時，位元錯誤率的上界表現出良好的緊密性，反之可以採用近似主導界線。透過推導出的界線，針對信號雜訊比、數據與領導信號功率比、天線分集、通道條件和領導信號長度等不同參數，分析且研究所考慮的基於廣義概度比檢定的正交分頻多工單輸入多輸出系統之錯誤性能特徵。" | zh_TW |
| dc.description.provenance | Made available in DSpace on 2022-11-24T09:25:04Z (GMT). No. of bitstreams: 1 U0001-2707202123521000.pdf: 4150280 bytes, checksum: 86116ae167f42c0bf3ea5b333380fbe5 (MD5) Previous issue date: 2021 | en |
| dc.description.tableofcontents | "中文摘要 i Abstract ii Contents iii List of Figures v List of Tables xiii 1 Introduction 1 1.1 Review of OFDM Systems 1 1.2 Review of Channel Estimation 2 1.2.1 Review of Pilot Patterns 3 1.2.2 Reviews of Channel Estimation Methods 3 1.3 Thesis Motivation, Overview, and Contributions 4 1.4 Notations 6 2 Pilot-¬Aided OFDM System Model 7 2.1 Introduction 7 2.2 System Model 7 2.3 GLRT¬-based Decision Rule 10 2.3.1 Decision Rule with Constant Amplitude Pilot Sequence 13 3 Performance Analysis 15 3.1 Introduction15 3.2 Conditional BEP Upper Bound 15 3.2.1 Pairwise Error Probability for MPSK 17 3.3 Average BEP Upper Bound 18 4 Performance Results 23 4.1 Introduction 23 4.2 ZC Sequences 23 4.3 BEP Characteristics in Fixed Block Dispersive Channel 24 4.3.1 Fixed Block Dispersive Channel 24 4.3.2 Conditional BEP Upper Bound Performance 25 4.4 Average BEP Characteristics in Random Block Dispersive Channel 34 4.4.1 Random Block Dispersive Channel 34 4.4.2 Unconditional BEP Upper Bound Performance 36 5 Conclusion 50 Bibliography 51 Appendix A Derivation of (3.2) 56 Appendix B Derivation of (3.10) 60" | |
| dc.language.iso | en | |
| dc.subject | 分段頻散通道 | zh_TW |
| dc.subject | 正交分頻多工 | zh_TW |
| dc.subject | 領導式通道估測 | zh_TW |
| dc.subject | 廣義概度比檢定 | zh_TW |
| dc.subject | 單出入多輸出 | zh_TW |
| dc.subject | Orthogonal frequency division multiplexing | en |
| dc.subject | block dispersive channel | en |
| dc.subject | single-input multiple-output | en |
| dc.subject | generalized likelihood ratio test | en |
| dc.subject | pilot-aided channel estimation | en |
| dc.title | 基於廣義概度比檢定和領導式通道估測的正交分頻多工單輸入多輸出系統之解調性能分析 | zh_TW |
| dc.title | Performance Analysis of GLRT-Based OFDM SIMO Demodulation System With Pilot-Aided Channel Estimation | en |
| dc.date.schoolyear | 109-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.coadvisor | 陳維昌(Wei-Chang Chen) | |
| dc.contributor.oralexamcommittee | 李穎(Hsin-Tsai Liu),林茂昭(Chih-Yang Tseng),蘇育德 | |
| dc.subject.keyword | 正交分頻多工,領導式通道估測,廣義概度比檢定,單出入多輸出,分段頻散通道, | zh_TW |
| dc.subject.keyword | Orthogonal frequency division multiplexing,pilot-aided channel estimation,generalized likelihood ratio test,single-input multiple-output,block dispersive channel, | en |
| dc.relation.page | 65 | |
| dc.identifier.doi | 10.6342/NTU202101827 | |
| dc.rights.note | 未授權 | |
| dc.date.accepted | 2021-08-02 | |
| dc.contributor.author-college | 電機資訊學院 | zh_TW |
| dc.contributor.author-dept | 電信工程學研究所 | zh_TW |
| 顯示於系所單位： | 電信工程學研究所 | |
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