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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/46650完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 張進福 | |
| dc.contributor.author | Tai-Wei Chang | en |
| dc.contributor.author | 張玳瑋 | zh_TW |
| dc.date.accessioned | 2021-06-15T05:21:00Z | - |
| dc.date.available | 2015-07-23 | |
| dc.date.copyright | 2010-07-23 | |
| dc.date.issued | 2010 | |
| dc.date.submitted | 2010-07-20 | |
| dc.identifier.citation | [1] K. C. Cheng and R. Prasad, “Cognitive Radio Networks,” John Wiley & Sons, 2009
[2] Harry L. Van Trees , “Optimum Array Processing, Part IV of Detection, Estimation, and Modulation Theory”, John Wiley & Sons, 2002 [3] Michael Chyssomallis, “Smart Antennas,” IEEE Antennas and Propagation Magazine, Vol 42, No.3, June 2000. [4] J.H.Winters, “Smart Antennas FOR Wireless Communications,” ppt., Dec.2003. [5] NTIA, “U.S.Frequency Allocation”, [online] http:// www.ntia.doc.gov/osmhome/allochrt.pdf [6] First Report and Order, Federal Communication Commision Std.FCC 02-48, Feb,2002 [7] C. M. Teng and K. C. Chen, “A Unfined Algorithm for Wireless MAC Protocols,” Proc. IEEE VTC, 2002 [8] S. Haykin, “Cognitive radio: brain-empowered wireless communications,”IEEE Journal on Selected Areas in Communications, vol. 23,No. 2, pp. 201–220, 2005, 0733-8716. [9] D. Carbric, S. M. Mishra, D. Willkomm, R. Brodersen and A. Wolisz,“A cognitive radio approach for usage of virtual unlicensed spectrum,” in 14th IST Mobile and Wireless Communications Summit, 2005. [10] S. Srinivasa and S. A. Jafar, “The Throught Potential of Cognitive Radio: A Theoretical Perspective,” IEEE Communication Magazines, pp.73-79, May 2007 [11] S. Haykin, “Adaptive Filter Theory”,4th edition, Prentice-Hall, Eagle wood cliffs, NJ,2002 [12] R. O. Schmidt, “Mutltiple Emitter Location and Signal Parameter Estimation,” IEEE Transactions on Antennas propagation, Vol. AP-34, No. 3, pp.276-80, Mar.1986 [13] H. Ren and C. I. Chang, “Target-Constrained Interfernce-minimized Approach to Subpixel Target Detection for Hyperspetral Images”, Opt.ENG.,2000 [14] N. Hoven and A. Sahai, “Power Scaling for Cognitive Radio,” in Proc. WirelessCom’05, pp250-255, Jun. 2005 [15] S.M. Mishra, R. Tandra and A. Sahai, “Coexistence With Primary Users of Different Scales,” in Proc. IEEE Dynamic SymPAN, pp.1458-167, Apr.2007 [16] A. Sahai, R.Tantra, S.M. Mishra and N.K.Hoven, “Fundamental Design Tradeoffs in Cognitive Radio Networks,” In Proc. Of the first International Workshop on Technology and Policy for Accessing Spectrum, (TAPAS), 2006 [17] L. Qiuan, X. F. Li, J. Attia and Z. Gajic, “Power Control for Cognitive Radio Ad Hoc Networks” in Proc. 15th IEEE Workshop on Local and Metropolitan Area Networks, 2007 [18] S. Huang, Z. Ding and X. Liu, “Non-Intrusive Cognitive Radio Networks Based on Smart Antenna Technology,” in IEEE Global Telecommunications Conference(GLOBECOM), 2008. [19] M. H. Islam, Y. C. Liang and A,T. Hoang, “Joint Power Control and Beamforming for Cognitive Radio Networks,” IEEE Transactions On Wirless Communication, Vol .27, No.7, JUL. 2008. [20] M. Boutin, “ A Novel Interference Safety Margin for Cognitive Radio MANET using Smart Antennas,” Journal on Communications, Vol.4, No.4, May.2009 [21] P.Kontkanen, P.Myllymaki, T. Roos, H. Terri, K. Valtonen, and H.Wettin, “Topics in Probabilistic Location Estimation in Wireless Networks” 15th IEEE International Symposium on Personal, Indoor And Mobile Radio Communications (PIMRC’04), Vol.2, no.2, pp.540-549 ,Feb. 2008 [22] M. Boutin, A. Benzakour, C.L. Despins and S. Affes, “Radio Wave Characterization and Modeling in Undergroung Mine Tunnels,” IEEE Transactions On Antennas And Propagation, Vol .27, No.7, JUL. 2008. [23] T. S. Rappaport, “Wireless Communications Principles and Practice,” Prentice Hall, 2nd Edition, 1996. | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/46650 | - |
| dc.description.abstract | 對於頻帶主要使用者和感知無線電使用者共存,而且同時傳輸的主題,引起研究興趣,在無線環境中智慧型天線使用指向式的方法避免干擾不在指向範圍內的節點,並藉由智慧型天線的指向增益節省功率而改善通訊系統品質。在共存系統中,因為感知無線電傳輸對避免在互相干擾的區域中通訊,所以不同傳輸對間所產生的干擾低於可容忍的臨界值,不同的傳輸對可以互相通訊,而將互相干擾之區域稱之禁止傳輸區域。
功率控制在消除干擾上也是十分重要,本論文中結合功率控制與智慧型天線,可行性研究中指出在禁止傳輸區域和特定的拓樸外,頻帶主要使用者與感知無線電使用者可同時傳送,使用功率控制更可解決有些在禁止傳輸區域中,所面對到的問題,讓成功解碼律增加。在此研究中也談到了通道不對等和位置不確定性的所造成問題。 | zh_TW |
| dc.description.abstract | The co-existence and simultaneous transmission for primary users and cognitive radio users in the cognitive network attract the researching interesting. The smart antenna technology has been widely adopted in wireless environment to prevent the interference outside the expected transmission direction together with advantage of power saving by antenna directional gain to improve the system communication quality. That is intuitively witness that the different transmission pairs can communicate once when those interference among transmission pairs below the tolerance threshold since cognitive radio users do not transmit in the mutual interfering area, called restricted area .
Power control is another popular mechanism to reduce the interference. In this thesis we combine the concepts of smart antenna and power control. The feasibility study demonstrates the simultaneous transmission scenario among primary users and cognitive radio users when they locate at spectacular topology or not within the restricted area. Power control can further solve some problems which met in restrict area to increase the successful decodable rate. The channel mismatch and location uncertainty are also studied in this research. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-15T05:21:00Z (GMT). No. of bitstreams: 1 ntu-99-R97942058-1.pdf: 2410352 bytes, checksum: ea7fc0a6a24254fec3d4b5bbc88b82ce (MD5) Previous issue date: 2010 | en |
| dc.description.tableofcontents | 目 錄
誌 謝 iii 中文摘要 iv 英文摘要 v 圖目錄 IV 表目錄 IX 第一章緒論 1 1.1研究背景 1 1.2智慧型天線 2 1.2.1智慧型天線優點 2 1.2.2智慧型天線的分類 3 1.3 感知無線電網路 4 1.3.1 感知無線電系統由來 4 1.3.2 感知無線電系統 6 1.3.3 感知無線電系統接取方式 9 1.3.4 感知無線電系統頻帶使用方式 10 1.4 研究動機 11 1.5論文架構 11 第二章 感知無線電使用者在智慧型天線架構下和頻帶主要使用者共存之可行性 13 2.1 天線陣列基本架構及數學模型 13 2.2 陣列天線排放 15 2.2.1 均勻線性排列天線(一維線性排列天線) 16 2.2.2 平面排列天線(二維線性排列天線) 17 2.2.3 環形排列天線 18 2.3 利用MUSIC演算法作訊號源角度估測 18 2.3.1 MUSIC數學分析 19 2.3.2 訊號源角度估測應用在感知無線電系統 21 2.4 MVDR波束成形技術及利用此做出禁止傳輸區域 22 2.4.1 MVDR波束形成數學分析 23 2.5 使用多波束成形在非禁止傳輸區域搜尋與其效能表現 30 2.6 在感知無線電使用者上設計禁止傳輸區域的大小 34 2.7比較感知無線電使用全向性天線和智慧型天線之效能 41 2.8頻帶主要使用者為傳送對感知無線電使用者設計禁止傳輸區域 43 2.8.1禁止傳輸區域在已知頻帶使用者傳送對之資訊情境下 44 2.8.2禁止傳輸區域在僅知頻帶使用者傳送對其中之一資訊情境 46 2.9頻帶主要使用者為傳送對情境下感知無線電使用者傳送對之運作 47 2.9.1感知無線電使用者傳送對搜尋及資料傳輸在已知頻帶主要使用者傳送對之資訊情境下 47 2.9.2感知無線電使用者傳送對搜尋及資料傳輸在僅知頻帶主要使用者傳送對其中一人之資訊 52 2.10 本章小結 56 第三章 感知無線電使用者和頻帶主要使用者共存之下,感知無線電使用者之功率控制技術在智慧型天線架構下 59 3.1在感知無線電使用者和頻帶主要使用者共存下功率控制技術應用 59 3.2感知無線電接收端使用功率控制在已完成全功率搜尋後 60 3.2.1感知無線電接收端功率控制在已知頻帶主要使用者傳送對之資訊之情境 60 3.2.2感知無線電接收端功率控制在僅知頻帶主要使用者傳送對之一資訊之情境 66 3.3感知無線電傳送對使用功率控制在搜尋其他使用者和傳送資料 67 3.3.1感知無線電傳送端功率控制在已知頻帶主要使用者傳送對之資訊之情境 67 3.3.2感知無線電傳送端功率控制在僅知頻帶主要使用者傳送對之一資訊之情境 73 3.4本章小結 77 第四章 在通道資訊不一致及位置不確定的情況下對感知無線電使用者和頻帶主要使用者共存之影響 79 4.1 相關文獻 79 4.2通道資訊不一致對共存系統之影響 80 4.2.1 通道衰減增益不對等對共存系統影響 80 4.2.2 路徑衰減指數不對等對共存系統影響 85 4.3位置不確定性對共存系統之影響 89 4.4 本章小結 96 第五章 總結 99 5.1研究貢獻 99 5.2未來研究方向及展望 101 參考文獻 102 | |
| dc.language.iso | zh-TW | |
| dc.subject | 位置不確定性 | zh_TW |
| dc.subject | 感知無線電系統 | zh_TW |
| dc.subject | 智慧型天線 | zh_TW |
| dc.subject | 功率控制 | zh_TW |
| dc.subject | 共存系統 | zh_TW |
| dc.subject | 通道不對等 | zh_TW |
| dc.subject | Cognitive Radio Networks | en |
| dc.subject | Location Uncertaity | en |
| dc.subject | Channel Mismatch | en |
| dc.subject | Coexistence System | en |
| dc.subject | Power Control | en |
| dc.subject | Smart Antennas | en |
| dc.title | 功率控制技術在感知無線電網路中使用智慧型天線 | zh_TW |
| dc.title | Power Control Technique in Cognitive Radio Networks Using Smart Antennas | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 98-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 魏學文,金力鵬,黃政吉 | |
| dc.subject.keyword | 感知無線電系統,智慧型天線,功率控制,共存系統,通道不對等,位置不確定性, | zh_TW |
| dc.subject.keyword | Cognitive Radio Networks,Smart Antennas,Power Control,Coexistence System,Channel Mismatch,Location Uncertaity, | en |
| dc.relation.page | 104 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2010-07-20 | |
| 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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