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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 鐘嘉德(Char-Dir Chung) | |
dc.contributor.author | Shu-Yu Li | en |
dc.contributor.author | 李曙宇 | zh_TW |
dc.date.accessioned | 2021-06-07T17:41:16Z | - |
dc.date.copyright | 2020-08-04 | |
dc.date.issued | 2020 | |
dc.date.submitted | 2020-07-22 | |
dc.identifier.citation | [1] C. Chung, “Time-Limited Partial-Response Pulses Achieving Near Nyquist Capacities,” unpublished. [2] J. G. Proakis, Digital Communications, 5th ed. New York: McGraw-Hill, 2008. [3] A. Assalini and A. M. Tonello, “Improved Nyquist pulses,” IEEE Commun. Lett., vol. 8, no. 2, pp. 87–89, Feb. 2004. [4] P. Kabal and S. Pasupathy, “Partial-Response Signaling, ” in IEEE Transactions on Communications, vol. 23, no. 9, pp. 921-934, September 1975. [5] J. K. Tugnait and U. Gummadavelli, “Blind equalization and channel estimation with partial response input signals,” in IEEE Transactions on Communications, vol. 45, no. 9, pp. 1025-1031, Sept. 1997. [6] J. J. Werner, J. Yang, D. D. Harman, and G. A. Dumont, “Blind equalization for broadband access,” IEEE Comm. Magazine, pp. 87–93, April 1999. [7] W. Chen and C. Chung, “Spectrally Efficient OFDM Pilot Waveform for Channel Estimation,” in IEEE Transactions on Communications, vol. 65, no. 1, pp. 387-402, Jan. 2017. [8] S. N. Crozier, D. D. Falconer, and S. A. Mahmoud, “Least sum of squared errors (LSSE) channel estimation,” IEEE Proceedings on Radar and Signal Processing, vol. 138, pp. 371–378, August 1991. [9] C. Tellambura, M. Parker, Y. Guo, S. Shepherd, and S. B. Barton, “Optimal sequences for channel estimation using discrete Fourier transform techniques,” IEEE Trans. Communications, vol. 47, pp. 230–238, Feb 1999. [10] J. K. Cavers, “An analysis of pilot symbol assisted modulation for Rayleigh fading channels,” IEEE Trans. Veh. Technol., vol. 40, pp. 686–693, Nov. 1991. [11] L. M. Davis, I. B. Collings and R. J. Evans, “Identification of time-varying linear channels,” 1997 IEEE International Conference on Acoustics, Speech, and Signal Processing, Munich, 1997, pp. 3921-3924 vol.5 [12] M. K. Tsatsanis and Zhengyuan Xu, “Pilot symbol assisted modulation in frequency selective fading wireless channels,” in IEEE Transactions on Signal Processing, vol. 48, no. 8, pp. 2353-2365, Aug. 2000 [13] B. Cai, A. Liu, X. Tong and F. Cheng, “Training sequences design for channel estimation in FTN system using discrete Fourier transform techniques,” in IET Communications, vol. 11, no. 17, pp. 2561-2565, 2017. [14] J. C. L. Ng, K. B. Letaief and K. D. Murch, “Multi-phase optimal sequences for fast initialization of channel estimation and equalization,” Proceedings of ICC'97 - International Conference on Communications, Montreal, Quebec, Canada, 1997, pp. 1484-1487 vol.3. [15] J. Ng, K. Letaief, and R. Murch, “Complex optimal sequences with constant magnitude for fast channel estimation initialization,” IEEE Trans. Communications, vol. 46, pp. 305–308, March 1998. [16] A. P. Clark, Z. C. Zhu and J. K. Joshi, 'Fast start-up channel estimation,' in IEE Proceedings F - Communications, Radar and Signal Processing, vol. 131, no. 4, pp. 375-382, July 1984 [17] G. Ungerboeck, “Adaptive maximum-likelihood receiver for carrier modulated data-transmission systems,” in IEEE Transactions on Communications, vol. 22, no. 5, pp. 624-636, May 1974. [18] R.M.Gray, Toeplitz and Circulant Matrices: A Review. Boston, MA,USA: Now Publishers, 2006. [19] S. M. Kay, Fundamentals of Statistical Signal Processing: Estimation Theory. Englewood Cliffs, NJ, USA: Prentice-Hall, 1993. [20] L. Spence, A. Insel, S. Friedberg, Elementary Linear Algebra. A Matrix Approach, NJ, USA: Pearson Prentice Hall, 2008. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/15499 | - |
dc.description.abstract | 為了達到最佳的功率效率,大多通訊系統採用符合奈奎斯零符元干擾準則(Nyquist zero ISI criterion)的有限頻寬脈衝進行傳輸。有限頻寬脈衝在時間上無限長的特性是不可實現的,必須在時間上先被截斷成截斷脈衝。然而截斷操作破壞脈衝原有的特性,使得符元間干擾產生。無線通訊情境中大多使用領航訊號協助通道估測,以補償通道效應對傳輸訊號產生的扭曲與符元間干擾。這類截斷脈衝調變系統的符元間干擾源自脈衝與通道,然而過往文獻對截斷脈衝調變系統的通道估測的討論並不多。 在本論文中,我們將循環前輟(cyclic prefix)的概念使用在領航訊號區間,如此一來,前方傳輸資料不會干擾領航訊號,且利用將線性卷積轉換成循環卷積的特性使領航訊號可以減弱脈衝造成符元間干擾並估測通道的效應。在這個架構下,系統化設計最佳領航訊號的方法被提出,提出的領航訊號可使通道估測值方均差(mean square error)達到理論上的下限,即克拉馬-羅限(Cramér Rao bound)。除此之外,設計出領航訊號在接收端還有低計算複雜度的優點。 | zh_TW |
dc.description.abstract | In order to achieve better power efficiency, most adopt bandlimited pulse which satisfies Nyquist zero ISI criterion in communication system. Bandlimited pulse which is infinitely long in time domain is impractical, and it needs to be truncated firstly, and then it becomes truncated pulse. However, truncating operation makes pulse not satisfy Nyquist zero ISI criterion anymore and then ISI (intersymbol interference) occurs. In wireless communication scenario, pilot-aided method is widely used to assist channel estimation, and channel effect which distorts transmitting signal and occurs ISI is compensated. In this thesis, we apply CP (cyclic prefix) technique in guard interval which precedes pilot interval. On one hand CP can reject interference from preceding interval to pilot interval, on the other hand its property which transforms liner convolution into circular convolution is used to mitigate the ISI resulting from pulse. Under this structure, systematic design procedure is proposed to develop optimal pilot sequences which let mean square error of channel estimator achieve its minimum value, i.e. CRB (Cramér Rao bound). Besides, receiver can perform channel estimation in low computational complexity way when proposed pilot sequences are adopted. | en |
dc.description.provenance | Made available in DSpace on 2021-06-07T17:41:16Z (GMT). No. of bitstreams: 1 U0001-1407202016242700.pdf: 3789960 bytes, checksum: 4794e4ba74fe3b9fb070d216a769caa0 (MD5) Previous issue date: 2020 | en |
dc.description.tableofcontents | 中文摘要 i 英文摘要 ii 目錄 iii 圖目錄 v 表目錄 vii 符號表 viii 第一章 緒論 1 第1.1節 奈奎斯零符元干擾準則 1 第1.2節 通道估測簡介 2 第1.2.1小節 多載波調變領航信號輔助式通道估測 3 第1.2.2 小節 單載波調變領航信號輔助式通道估測 4 第1.3節 論文動機 5 第二章 系統模型 8 第2.1節 連續時間系統模型 8 第2.2節 離散時間系統模型 13 第2.3節 接收信號模型 15 第三章 領航信號設計 16 第3.1節 通道估測演算法 16 第3.2節 設計準則 18 第3.3節 系統化設計流程 20 第3.3.1小節 scenario 1下的設計流程 21 第3.3.2小節 scenario 2下的設計流程 25 第3.3.3小節 scenario 3下的設計流程 26 第3.3.4小節 設計流程的討論與舉例 27 第3.3.5小節 設計領航訊號的其他優點 29 第3.4節 數值結果 31 第3.4.1小節 完美時間同步之情況 32 第3.4.2小節 符元時間偏差存在之情況 40 第3.4.3小節 數值結果之討論 43 第四章 結論 45 參考文獻 45 附錄 49 | |
dc.language.iso | zh-TW | |
dc.title | 提供通道估測之截斷根升餘弦脈衝調變系統具循環前綴領航信號的設計分析 | zh_TW |
dc.title | Design and Analysis of Cyclically-Prefixed Pilot Sequence for Channel Estimation in Truncated-Root-Raised-Cosine Pulsed Modulation System | en |
dc.type | Thesis | |
dc.date.schoolyear | 108-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 王晉良(Chin-Liang Wang),馮世邁(See-May Phoong),陳維昌(Wei-Chang Chen),蘇育德(Yu-Ted Su) | |
dc.subject.keyword | 通道估測,領航訊號,循環前輟,截斷脈衝,克拉馬-羅限, | zh_TW |
dc.subject.keyword | channel estimation,pilot sequence,cyclic-prefix,truncated pulse,Cramér Rao bound., | en |
dc.relation.page | 51 | |
dc.identifier.doi | 10.6342/NTU202001517 | |
dc.rights.note | 未授權 | |
dc.date.accepted | 2020-07-22 | |
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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