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| ???org.dspace.app.webui.jsptag.ItemTag.dcfield??? | Value | Language |
|---|---|---|
| dc.contributor.advisor | 張進福(Jin-Fu Chang) | |
| dc.contributor.author | Ho-Peng Hung | en |
| dc.contributor.author | 洪和鵬 | zh_TW |
| dc.date.accessioned | 2021-06-14T16:46:48Z | - |
| dc.date.available | 2013-08-04 | |
| dc.date.copyright | 2008-08-04 | |
| dc.date.issued | 2008 | |
| dc.date.submitted | 2008-07-31 | |
| dc.identifier.citation | 1.Agrawal, D. P. Introduction to wireless and mobile systems 2nd.
2.Andrews, J. G. Fundamentals of WiMAX. 3.Cao, G., & Singhal, M. (1999). An adaptive distributed channel allocation strategy for mobilecellular networks. Performance, Computing and Communications Conference , pp. 36-42. 4.Catreux, S., Erceg, V. G., & D. Heath, R. J. (2002). Adaptive modulation and MIMO coding for broadband wireless datanetworks. Communications Magazine, IEEE . 5.Chang., R. W. (1966). Synthesis of band-limited orthogonal signals for multi-channel. Bell System Tech. J. 6.Chin, L.-P., Chang, J.-F., & Huang, C.-M. (1997, 1). Performance of a two-layer LEO satellite communication network. Aerospace and Electronic Systems, IEEE Transactions , pp. 225-231. 7.Cimini, L. J. (1985). Analysis and simulation of a digital mobile channel using orthogonal frequency-division multiplexing. IEEE Trans. Commun . 8.http://www.intel.com/IDF/. (n.d.). http://www.intel.com/IDF/. 9.IEEE 802.16 Work Task Group. (n.d.). 10.Kurose, J. F., & Ross, K. W. Computer networking 3rd. 11.Lee, J. S., & Miller, L. E. (1998). CDMA Systems Engineering Handbook. Artech House . 12.Le-Pond, C. (1995). Performance Ananlysis of Integrated Mobile Communication Systems. 13.Molisch, A. F. Wireless Communications. 14.Nee, R. v., & Prasad., R. OFDM for Wireless Multimedia. 15.Nuaymi, L. WiMAX. John Wiley& Sons, Ltd. 16.Pahlavan, K., Krishnamurthy, P., Hatami, A., & Ylianttila, M. (2000). Handoff in hybrid mobile data networks. Personal Communications, IEEE , pp. 34-47. 17.Stuber, G. L. Principles of mobile communication. 18.Tripathi, N., Reed, J., & VanLandinoham, H. (1998). Handoff in cellular systems. Personal Communications, IEEE , pp. 26-37. 19.WiMAX Forum. (2006). Mobile WiMAX Part I: A Technical Overview and Performance Evaluation. 20.Zeng, Q.-A., & Agrawal, D. (2001). Modeling of handoffs and performance analysis of wireless datanetworks. Parallel Processing Workshops, 2001. International Conference , pp. 491-496. 21.Zhang, D., Wei, G., & Zhu, J. (2002). Performance of hard and soft handover for CDMA system. Vehicular Technology Conference, 2002. Proceedings. VTC 2002-Fall. 2002 IEEE 56th , pp. 1143-1147. 22.周建銘. 【技術專欄】IEEE 802.16j 之移動式中繼站簡介. 23.唐雄燕. 無線寬頻存取技術及應用. 24.許獻聰教授. (n.d.). http://www.ce.ncu.edu.tw/teacher.php?dr=STSheu. 25.傅宜康. 【技術專欄】IEEE 802.16j Relay 技術簡介. 26.黃子漢. (n.d.). 無線通信百年演進史. Retrieved from http://www.cqinc.com.tw/grandsoft/cm/027/atr2617.htm. | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/40406 | - |
| dc.description.abstract | 本研究的目的在於探討在WiMAX 802.16e 與802.16j 共構環境下之系統效能提升，我們考慮二階層式系統（Two-Layer System）以增加系統容量、提高資源使用率（Utilization）傳輸速率（Data Transmission Rate）與通話成功率（Call completion Rate）。考慮802.16j細胞完全覆蓋802.16e的細胞下，我們以速度將用戶分類為二個群組：高移動速度用戶由涵蓋範圍較大的802.16e基地台服務，而移動速度較慢的用戶如行人則由802.16j基地台服務，藉此減少換手（Handoff）次數以避免其產生之種種問題。Overflow策略、Channel Reservation策略以及混合式策略（Hybrid Method）亦對提高系統效能。
本論文的貢獻為： 1． 提出在WiMAX 802.16e 與802.16j 共構環境下產生系統最大容量最之頻率分配。 2． Overflow策略、Channel Reservation策略能有效提高系統效能如與通話成功率（Call completion rate）與資源使用率（Utilization）。 3． 提出混合式策略（Hybrid Method）以期效能有更進一步的改善。 | zh_TW |
| dc.description.abstract | The objective of this thesis is to study the performance improvement under the co-existence of 802.16e and 802.16j WiMAX systems. The two-layered architecture is adapted to investigate the performance measurements including the system capacity, call successful rate, and channel utilization. Under the environment of full coverage of 802.16j cells in 802.16e, the cells of 802.16e cover larger area and designed to serve high speed users. On the other hand, cells of 802.18j cover smaller areas are designed to server pedestrian and low speed user so as to reduce the handover failure rate. The overflow, channel reservation, and the hybrid algorithms are also studied for further improvement.
Our main contributions are as follow 1. Proposed the frequency assignment under co-existence of 802.16j and 802.16e following constrain of 802.16 specifications to achieve the maximum capacity. The frequency pattern and adaptive modulation are also taken into consideration. 2. The overflow and channel reservation algorithms are studied to improve the performance including call successful rate, and channel utilization. 3. The hybrid algorithm is proposed for further improvement. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-14T16:46:48Z (GMT). No. of bitstreams: 1 ntu-97-R95942121-1.pdf: 6595769 bytes, checksum: dedb8a36ee8fd2273914fb1982397f65 (MD5) Previous issue date: 2008 | en |
| dc.description.tableofcontents | 口試委員會審定書 i
誌謝 ii 摘要 iii Abstract iv 圖目錄 vii 表目錄 x 第一章 緒論 1 1.1 前言 1 1.2 近代無線通訊發展概述 1 1.3 WiMAX技術 7 1.3.1 WiMAX的背景 7 1.3.2 WiMAX技術簡介 11 1.3.3 OFDM技術簡介（OFDM） 15 1.3.4 正交分頻多重存取技術簡介（OFDMA） 20 1.3.5 IEEE 802.16j Relay技術 21 1.4 研究動機 24 1.5 論文架構 24 第二章 WiMAX 802.16e與802.16j共構環境下系統描述 27 2.1 蜂巢式無線通訊系統概念 （Cellular Wireless Communication System） 27 2.2 Walfish-Ikegami Model 29 2.3 同通道干擾（Co-channel Interference） 31 2.4 適應性編碼調變 （Adaptive Modulation and Coding） 35 2.5 細胞規劃（Cell Planning） 38 2.6 電腦模擬 （Computer Simulation） 40 2.6.1 基本模型 40 2.6.2 演算法（Algorithm） 42 2.6.3 摺疊(Wrap Around) 技術 45 2.7 電腦模擬 （Computer Simulation） 50 2.8 本章小結 （Conclusion） 54 第三章 Overflow and Channel Reservation 57 3.1 前言 57 3.2 Overflow 58 3.2.1 演算法（Algorithm） 59 3.2.2 電腦模擬（Simulation） 63 3.3 Channel Reservation 66 3.3.1 演算法（Algorithm） 66 3.3.2 電腦模擬（Simulation） 70 3.5 本章小結（Conclusion） 73 第四章 混合式方式（Hybrid Method） 77 4.1 前言 77 4.2 演算法（Algorithm） 77 4.3 電腦模擬（Simulation） 81 4.4 本章小結（Conclusion） 88 第五章 全文總結與未來展望 89 5.1 各章節回顧 89 5.2 未來研究方向 91 REFERENCE 92 | |
| dc.language.iso | zh-TW | |
| dc.title | 基於WiMAX 802.16e與802.16j共構環境下效能提升之研究 | zh_TW |
| dc.title | A Study of Performance Improvement on the 802.16e/ 802.16j Co-existence WiMAX System | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 96-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 魏學文(Shyue-Win Wei),金力鵬(Le-Pond Chin) | |
| dc.subject.keyword | 全球互通微波存取,資源保留策略,效能, | zh_TW |
| dc.subject.keyword | WiMAX,Performance, | en |
| dc.relation.page | 93 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2008-07-31 | |
| 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 |
| Appears in Collections: | 電信工程學研究所 | |
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| File | Size | Format | |
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| ntu-97-1.pdf Restricted Access | 6.44 MB | Adobe PDF |
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