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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 鐘嘉德 | zh_TW |
| dc.contributor.advisor | Char-Dir Chung | en |
| dc.contributor.author | 徐子清 | zh_TW |
| dc.contributor.author | Tzu-Ching Hsu | en |
| dc.date.accessioned | 2025-08-05T16:05:08Z | - |
| dc.date.available | 2025-08-06 | - |
| dc.date.copyright | 2025-08-05 | - |
| dc.date.issued | 2025 | - |
| dc.date.submitted | 2025-07-29 | - |
| dc.identifier.citation | [1] 3GPP, “Study on scenarios and requirements for next generation access technologies,” 3GPP, Sophia Antipolis, France, Tech. Report 38.913, 2016.
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/98366 | - |
| dc.description.abstract | 透過在循環前綴正交分頻多工 (CP-OFDM) 調變前對多個數據區塊進行預編碼，矩形脈衝 CP-OFDM 幀調變架構可在線性時變多路徑 (LTV) 通道下實現較 CP-OFDM 更佳的錯誤效能。典型實例包括循環前綴正交時頻空間 (CP-OTFS)、循環前綴正交時序多工 (CP-OTSM)、循環前綴仿射分頻多工 (CP-AFDM)、循環前綴單載波 (CP-SC) 以及循環前綴錨點輔助單載波 (CP-ASC)。這些 CP-OFDM 幀調變各具理想但無法同時滿足的特性，包括對雙重通道色散的抵抗能力、低峰均功率比 (PAPR) 及高頻譜緊密度。
本文提出的循環前綴錨點輔助時序多工 (CP-ATSM) 在 CP-OFDM 幀調變架構中引入錨點符元插入、選擇性映射與均勻數據擴展技術。模擬結果顯示，CP-ATSM 在 LTV 通道下的未編碼錯誤效能與 CP-OTFS 及 CP-OTSM 相當，並優於 CP-AFDM、CP-SC 和 CP-ASC，同時相較於 CP-OTFS、CP-OTSM 及 CP-AFDM 具備更低的 PAPR。此外，CP-ATSM 在頻譜效率上與 CP-ASC 相當，並顯著優於 CP-OTFS、CP-OTSM、CP-AFDM 和 CP-SC。 | zh_TW |
| dc.description.abstract | By precoding multiple data bocks before cyclic-prefixed orthogonal frequency-division multiplexing (CP-OFDM) modulation, the rectangularly-pulsed CP-OFDM frame modulation structure has been adopted to achieve better error performance than CP-OFDM over linear time-varying multipath (LTV) channels. Typical embodiments include cyclic-prefixed orthogonal time frequency space (CP-OTFS), cyclic-prefixed orthogonal time sequency multiplexing (CP-OTSM), cyclic-prefixed affine frequency division multiplexing (CP-AFDM), cyclic-prefixed single carrier (CP-SC), and cyclic-prefixed anchor-aided single carrier (CP-ASC). These CP-OFDM frame modulations show various desirable but not simultaneously existing features, including resistance to double channel dispersion, low peak-to-average power ratio (PAPR), and high spectral compactness. By incorporating anchor-symbol insertion, selected mapping, and uniform data spreading into the CP-OFDM frame modulation structure, cyclic-prefixed anchor-aided time sequency multiplexing (CP-ATSM) is proposed in this paper. CP-ATSM performs comparably with CP-OTFS and CP-OTSM and outperforms CP-AFDM, CP-SC, and CP-ASC in uncoded error performance over LTV channels, while offering reduced PAPR compared to CP-OTFS, CP-OTSM, and CP-AFDM. Besides, CP-ATSM performs comparably with CP-ASC and outperforms CP-OTFS, CP-OTSM, CP-AFDM, and CP-SC significantly in spectral efficiency. | en |
| dc.description.provenance | Submitted by admin ntu (admin@lib.ntu.edu.tw) on 2025-08-05T16:05:08Z No. of bitstreams: 0 | en |
| dc.description.provenance | Made available in DSpace on 2025-08-05T16:05:08Z (GMT). No. of bitstreams: 0 | en |
| dc.description.tableofcontents | 誌謝 i
中文摘要 ii Abstract iii Contents iv List of Figures vi List of Tables viii List of Abbreviations ix Chapter 1 Introduction 1 1.1 LTV Channels in High-Mobility Scenarios 1 1.2 CP-OFDM Frame Modulations 2 1.3 Precoded CP-OFDM Block Modulations 3 1.4 Motivation and Contribution 5 1.5 Organization 6 1.6 Notations 6 Chapter 2 CP-OFDM Frame Modulations 8 2.1 Signal Models 8 2.2 Power Spectrums for Memoryless Random Data 11 2.3 ADRs over LTV Channels 13 Chapter 3 Precoded CP-OFDM Block Modulations 16 3.1 Signal Models 16 3.2 Power Spectrums for Memoryless Random Data 18 3.3 ADRs over LTV Channels 20 Chapter 4 CP-ATSM Modulation 23 4.1 CP-ATSM Signal Model 23 4.2 Design of CP-ATSM Signal 24 4.3 Power Spectrum for Memoryless Random Data 25 4.4 Uncoded CP-ATSM Demodulation 26 4.5 Achievable Data Rate 27 Chapter 5 Performance Results 28 5.1 Channel and System Parameters 29 5.2 PAPR Characteristics 31 5.3 Spectral Compactness Characteristics 33 5.4 ADR Characteristics 36 5.5 BER Characteristics 38 5.6 Comparison of Computational Complexity 42 Chapter 6 Conclusion 48 Reference 51 | - |
| dc.language.iso | en | - |
| dc.subject | 單載波 | zh_TW |
| dc.subject | 仿射分頻多工 | zh_TW |
| dc.subject | 正交時序多工 | zh_TW |
| dc.subject | 正交分頻多工 | zh_TW |
| dc.subject | 正交時頻空間 | zh_TW |
| dc.subject | Orthogonal time frequency space | en |
| dc.subject | Orthogonal frequency-division multiplexing | en |
| dc.subject | Affine frequency division multiplexing | en |
| dc.subject | Single carrier | en |
| dc.subject | Orthogonal time sequency multiplexing | en |
| dc.title | 循環前綴錨點輔助時間序列多工 | zh_TW |
| dc.title | Cyclic-Prefixed Anchor-Aided Time Sequency Multiplexing | en |
| dc.type | Thesis | - |
| dc.date.schoolyear | 113-2 | - |
| dc.description.degree | 碩士 | - |
| dc.contributor.coadvisor | 陳維昌 | zh_TW |
| dc.contributor.coadvisor | Wei-Chang Chen | en |
| dc.contributor.oralexamcommittee | 李穎;王晉良;林嘉慶 | zh_TW |
| dc.contributor.oralexamcommittee | Ying Li ;Chin-Liang Wang;Jia-Chin Lin | en |
| dc.subject.keyword | 正交分頻多工,正交時頻空間,正交時序多工,仿射分頻多工,單載波, | zh_TW |
| dc.subject.keyword | Orthogonal frequency-division multiplexing,Orthogonal time frequency space,Orthogonal time sequency multiplexing,Affine frequency division multiplexing,Single carrier, | en |
| dc.relation.page | 53 | - |
| dc.identifier.doi | 10.6342/NTU202502917 | - |
| dc.rights.note | 同意授權(限校園內公開) | - |
| dc.date.accepted | 2025-07-31 | - |
| dc.contributor.author-college | 電機資訊學院 | - |
| dc.contributor.author-dept | 電信工程學研究所 | - |
| dc.date.embargo-lift | 2030-07-29 | - |
| 顯示於系所單位： | 電信工程學研究所 | |
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