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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 張進福(Jin-Fu Chang) | |
dc.contributor.author | Wei-Li Wu | en |
dc.contributor.author | 吳偉立 | zh_TW |
dc.date.accessioned | 2021-06-13T05:45:02Z | - |
dc.date.available | 2007-07-18 | |
dc.date.copyright | 2006-07-18 | |
dc.date.issued | 2006 | |
dc.date.submitted | 2006-07-12 | |
dc.identifier.citation | [1]Theodore S. Rappaport, Wireless Communication: Principle and Practices, Prentice Hall, 2nd edition, 2002.
[2]J. K. Cavers, Mobile Channel Characteristics, Kluwer Academic Publisher, 2000. [3]“11-03-0940-04-000n-tgn-channel-models,” from 802.11 TGn, May 10, 2004. [4]J. Irvine, J. -P. Couvy, F.Graziosi, J. Laurila, G. Mossakowski, and P Robin, “System Architecture for the MOSTRANI Project ( mobile services for high speed trains),” Vehicular Technology Conference, IEEE 47th Volume 3, pp. 1917-1921 vol.3, 1997. [5]http://www.hsr.gov.tw/ [6]Arogyaswami J. Paulraj, Dhananjay A. Gore, R.U. Nabar, H. Bolcskei, “An Overview of MIMO Communication—A Key to Gigabit Wireless,” Proceedings of The IEEE, VOL. 92, NO. 2, February 2004, Volume 2, Issue 2, pp.198-218. [7]Kaizhi Huang, Jing Wang, Guoan Chen, Youzheng Wang, “Smart Antenna and Spatial Diversity-Combining,” Vehicular Technology Conference, IEEE 55th Volume 1, pp. 340 - 344 vol.1 6-9, May 2002. [8]http://140.113.144.115/Courses/Special_Topics_on_DSP_2006.htm [9]Siavash M. Alamuti, “A Simple Transmit Diversity Technique for Wireless Communications,” IEEE Journal on Selected Areas in Communications , Volume 16, Issue 8, pp 1451-1458, Oct 1998. [10]Vahid Tarokh, Nambi Seshadri, A. R. Calderbank, “Space-Time Codes for High Data Rate Wireless Communication: Performance Criterion and Code Construction,” IEEE Transactions on Information Theory, Volume 44, Issue 2, pp. 744-765, Mar 1998. [11]Vahid Tarokh, Hamid Jafarkhani, A. R. Calderbank, “Space-Time Block Coding for Wireless Communications: Performance Results,” IEEE Journal on Selected Areas in Communications, Volume 17, Issue, pp. 451-460 3, Mar 1999. [12]V. Tarokh, H. Jafarkhani, A.R. Calderbank, “Space-Time Block Codes from Orthogonal Designs,” IEEE Transactions on Information Theory, Volume 45, Issue 5, pp. 1456-1467, Jul 1999. [13]Brian L. Hughes, “Differential Space-Time Modulation,” IEEE Transactions on Information Theory, Volume 46, Issue 7, pp. 2567-2578, Nov 2000. [14]B.M. Hochwald, W. Sweldens, “Differential Unitary Space-Time Modulation,” Volume 48, Issue 12, pp. 2041-2052, Dec 2000. [15]G. Ganesan, P. Stoica, “Differential modulation using space-time block codes,” Conference Record of the Thirty-Fifth Asilomar Conference on Signals, Systems and Computers, Volume 1, pp. 236-240 vol.1, 2001, Pacific Grove, CA, USA [16]Meixia Tao, R.S. Cheng , “Differential Space-Time Block Codes,” Global Telecommunications Conference, IEEE GLOBECOM '01 Volume 2, pp. 1098-1102 vol.2, 2001. [17]I.R.S. Casella, P.J.E. Jeszensky, E.S. Sousa, “Evaluation of Chip Space-Time Block Coding for DS-WCDMA in Time-Varying Channels,” IEEE Proceedings on Personal, Indoor and Mobile Radio Communications, PIMRC 2003, 14th Volume 2 , pp. 1588- 1592 vol.2, Sept. 2003. [18]Zhiying WANG, Chen HE “A Channel Estimation Scheme for MIMO-MC -CDMA Downlink in High Mobility Environment,” IEICE TRANSACTIONS on Communications, Vol.E88-B No.3, pp.1282-1286, March 2005. [19]Zhiqiang Liu, G. B. Giannakis, B. L. Hughes, “Double differential space-time block coding for time-selective fading channels,” IEEE Transactions on Communications, Volume 49, Issue 9, pp. 1529-1539, Sep 2001. [20]Michael Chryssomallis, “Smart Antennas,” IEEE Antennas and Propagation Magazine, Vol.42, No.3, June 2000. [21]何錦富, “A Study on Adaptive Beamforming Techniques in High-Speed Train Environment,” 國立台灣大學電信工程學研究所碩士論文, June 2005. [22]Kyung Won Park, Yong Soo Cho, “An MIMO-OFDM technique for high-speed mobile channels,” IEEE Communications Letters, Volume 9, Issue 7, pp. 604- 606, July 2005. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/33720 | - |
dc.description.abstract | 多輸入多輸出(Multiple-Input Multiple-Output, MIMO)系統能在劇烈變動的通訊環境,利用空間性分集特性改善接收品質,空間性分集的作法主要是時空碼技術,然而在超高速移動通道中,因受到都卜勒效應影響,通道狀態快速變化,令時空碼的基本假設無法成立,故我們研究的目的即在改進時空碼架構,解決時空碼無法在超高速移動下使用的問題,因高速鐵路系統具有所有超高速移動環境的特性,故研究場景設定在高速鐵路環境下。首先探討時空碼失效的原因,接者介紹DDST演算法,研究其針對高速移動設計的觀念,並將DDST作為效能比較標準,以利於觀察改進架構的改善程度。之後利用高鐵環境存在直視波路徑,以及固定路徑資訊兩項特性,設計改進架構,最後利用智慧型天線技術,讓時空碼效能突破自然因素的限制,得以在高速鐵路環境中,幫助系統克服不良通訊衰變。 | zh_TW |
dc.description.provenance | Made available in DSpace on 2021-06-13T05:45:02Z (GMT). No. of bitstreams: 1 ntu-95-R93942086-1.pdf: 1505794 bytes, checksum: e7210f42a55c80198b9bdcaa95e023d3 (MD5) Previous issue date: 2006 | en |
dc.description.tableofcontents | 第一章 緒論......................................................1
1.1 前言........................................................1 1.2 研究動機與目的..............................................3 1.3 通道模擬參數設定............................................3 1.3.1 都卜勒效應參數........................................3 1.3.2 多路徑衰減參數........................................5 1.3.3 Rayleigh衰減分佈及通道模型............................6 1.3.4 Ricean衰減分佈及通道模型.............................10 1.3.5 無線連接架構.........................................12 1.3.6 高速鐵路環境.........................................13 1.4 多輸入多輸出系統...........................................14 1.5 論文架構...................................................19 第二章 MIMO分集特性於超高速環境下的效能分析.............21 2.1 研究動機與目的.............................................21 2.2 分集效應...................................................22 2.2.1 分集種類.............................................22 2.2.2 分集階級.............................................22 2.3 接收端分集.................................................23 2.4 傳輸端分集.................................................25 2.4.1 時空籬柵碼..........................................25 2.4.2 正交性時空方塊碼.....................................27 2.4.3 差分性時空方塊碼 ....................................30 2.5 電腦模擬結果...............................................33 2.5.1 分集階級之模擬及討論.................................33 2.5.2 移動環境之模擬及討論.................................35 2.5.3 增加符元速率以符合假設...............................37 2.6 結論.......................................................38 第三章 時空碼架構於超高速移動環境下演算法之效能改進......39 3.1 研究動機與目的.............................................39 3.2 雙差分時空碼...............................................40 3.2.1 DDST演算法原理及架構介紹............................40 3.2.2 DDST在群集通道模型中的效能討論......................47 3.3 運用固定通道已知資訊.......................................50 3.3.1 接收訊號—都卜勒頻率補償.............................51 3.3.2 通道估測—都卜勒相位補償.............................53 3.4 敏感度討論.................................................59 3.4.1 角度敏感度...........................................60 3.4.2 都卜勒偏移估測誤差敏感度.............................61 3.5 結論.......................................................62 第四章 時空碼之改進架構效能瓶頸討論.........................65 4.1 研究動機及目的.............................................65 4.2 改進作法的效能瓶頸.........................................66 4.2.1 不完美直視波通道模型一...............................67 4.2.2 不完美直視波通道模型二...............................69 4.2.3 造成效能瓶頸的原因...................................71 4.3 利用智慧型天線突破瓶頸.....................................71 4.4 結論.......................................................78 第五章 全文總結與未來展望.....................................79 5.1 全文總結...................................................79 5.2 可行的發展方向.............................................83 參考文獻.......................................................85 | |
dc.language.iso | zh-TW | |
dc.title | 時空碼應用於多輸入多輸出超高速移動通道的可行性研究 | zh_TW |
dc.title | Feasible Study of Using STC Algorithms in MIMO Wireless Communications in Very High Mobility Environment | en |
dc.type | Thesis | |
dc.date.schoolyear | 94-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 魏學文(Shyue-Win Wei),鐘嘉德(Char-Dir Chung),葉丙成(Ping-Cheng Yeh) | |
dc.subject.keyword | 多輸入多輸出,時空編碼,空間性分集,超高速移動, | zh_TW |
dc.subject.keyword | MIMO,space-time coding,spatial diversity,very high mobility, | en |
dc.relation.page | 87 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2006-07-14 | |
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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