在超寬頻無線隨意網路中使用陣列天線 黃信遠、武維疆
E-mail: [email protected]
摘 要
超寬頻( UWB )無線電( IR )吸引人的特性如提供隨意網路( ad hoc network )的多重存取很好的適應性。本篇論文我們著力在 發展以中央存取控制( MAC )為基礎的TH-UWB無線隨意網路系統，並且更進一步地增加空間複用( spatial reuse )和系統的 效能，本篇論文所考慮的存取模式結合了TH-UWB和分空間多重存取( SDMA )技術，許多設計的參數廣泛的被用來分析系 統的效能來符合(滿足)服務品質的需求。
關鍵詞 : 隨意網路、服務品質、中央存取控制、超寬頻Beamforming、跳時超寬頻。
目錄
封面內頁 簽名頁 授權書．．．．．．．．．．．．．．．．．．．．．．．．．iii 中文摘要．．．．．．．．．．．．
．．．．．．．．．．．．iv 英文摘要．．．．．．．．．．．．．．．．．．．．．．．．v 致謝．．．．．．．．．
．．．．．．．．．．．．．．．．．vi 目錄．．．．．．．．．．．．．．．．．．．．．．．．．．vii 圖目錄．．．
．．．．．．．．．．．．．．．．．．．．．．ix 表目錄．．．．．．．．．．．．．．．．．．．．．．．．．xi 第 一章 緒論．．．．．．．．．．．．．．．．．．．．．．1 1.1 研究動機．．．．．．．．．．．．．．．．．．1 1.2 研究方法．．．．．．．．．．．．．．．．．．2 1.3 內容大綱．．．．．．．．．．．．．．．．．．2 第二章 UWB通訊系統與Ad Hoc系統．．．．．．．．．．3 2.1 UWB之定義．．．．．．．．．．．．．．．．3 2.2 UWB IR 通訊系統特性．．．．．．．．．．．．．7 2.3 UWB的應用．．．．．．．．．．．．．．．．．11 2.4 脈波調變．．
．．．．．．．．．．．．．．．．13 2.4.1 脈波波形．．．．．．．．．．．．．．．14 2.4.2 Time-Hopping PAM調變 方式．．．．．．．15 2.5Ad Hoc系統．．．．．．．．．．．．．．．．．18 2.5.1 Ad Hoc 系統優點．．．．．．．．
．．．．20 第三章在超寬頻隨意網路使用陣列天線．．．．．．．．．．21 3.1訊號模式．．．．．．．．．．．．．．
．．．．21 3.2實際應用陣列天線之無線終端系統．．．．．．．24 3.3理論應用之陣列天線之無線終端系統之分析．．
．29 3.4陣列輔助之連結建立程序．．．．．．．．．．33 第四章數值分析與效能評估．．．．．．．．．．．．．．
．36 4.1模擬參數設定．．．．．．．．．．．．．．．．36 4.2增加目標用戶工率和主動連結(用戶)對接收機之影 響．．
．．．．．．．．．．．．．．．．．．37 4.3增加目標用戶工率和主動連結(用戶)對Outage probability之影響．．．．．
．．．．．．．．．39 4.4增加QoS和接收端對系統最大可容忍干擾(MSI)之影響．．．．．．．．．．．．．．．．．．
．．．41 4.5增加主動連結數對Failure rate之影響．．．．．．43 第五章結論．．．．．．．．．．．．．．．．．．．
．．．45 參考文獻．．．．．．．．．．．．．．．．．．．．．．．．46 圖目錄 圖2.1 功率訊號頻譜圖．．．．．．．
．．．．．．．．．．．3 圖2.2 UWB與傳統的窄頻訊號、寬頻訊號之比較．．．．．．．5 圖2.3 UWB與現有無線通訊系 統之公用頻帶示意圖．．．．．．5 圖2.4 UWB設備的發射功率限制示意圖．．．．．．．．．．．7 圖2.5 UWB應用範圍
．．．．．．．．．．．．．．．．．．11 圖2.6 PPM與PAM之調變差異 ．．．．．．．．．．．．．．14 圖2.7 高斯脈 波示意圖 ．．．．．．．．．．．．．．．．．15 圖2.8 一符元之TH BPPM UWB訊號．．．．．．．．．．．．16 圖2.9 在單一使用者下之TH-BPAM脈衝的例子．．．．．．．17 圖2.10 在單一使用者下之TH-BPPM脈衝的例子．．．．
．．．18 圖2.11無線蜂巢式系統和無線ad hoc之比較．．．．．．．．19 圖3.1 一個位元之TH BPAM訊號．．．．．．．
．．．．．23 圖3.2 接收端架構 ．．．．．．．．．．．．．．．．．．．24 圖3.3 連結建立圖(一) ．．．．．．．．．
．．．．．．．．33 圖3.4 連結建立圖(二) ．．．．．．．．．．．．．．．．．34 圖3.5 連結建立圖(三) ．．．．．．．
．．．．．．．．．．34 圖4.1 目標用戶之SNR對SINR之影響．．．．．．．．．37 圖4.2 主動連結(用戶)對SINR之影響
．．．．．．．．．38 圖4.3 目標用戶SNR對Outage probability之影響．．．．39 圖4.4 主動連結(用戶)對於Outage
probability之影響．．．40 圖4.5 最小所需求的Qos對於MSI之影響．．．．．．．41 圖4.6 接收端天線數目對系統MSI之影 響．．．．．．．．．42 圖4.7 主動連結(用戶)對於Failure rate之影響．．．．．．．43 圖4.8 主動連結(用戶)對於Failure rate之影響．．．．．．．44 表目錄 表2.1 耗電量比較表．．．．．．．．．．．．．．．．．．．9
參考文獻
[1]K. S. Gilhousen, I. M. Jacobs, R. Padovani, and L. A. Weaver, “Increased capacity using CDMA for mobile satellite communications,” IEEE Trans. Select. Areas Commun., vol. 8, pp. 503-514, May 1990.
[2]K. S. Gilhousen, I. M. Jacobs, R. Padovani, A. J. Viterbi, and L. A. Weaver, “On the capacity of a cellular CDMA system,” IEEE Trans.
Vech. Technol., vol. 40, no. 2, pp. 303-312, May 1991.
[3]M. Z. Win, R. A. Scholtz, “Impulse radio: How it works,” IEEE Commun. Letters, vol. 2, pp. 36-38, Feb. 1998.
[4]M. Z. Win, R. A. Scholtz, “Ultra-Wide Bandwidth Time-Hopping Spread-Spectrum Impulse Radio for Wireless Multiple-Access Communications,” IEEE Trans. Commun., vol 48, no. 4, Apr. 2000.
[5]Fernando Ramirez-Mireles, “Performance of ultra wideband SSMA using time hopping and M-ary PPM,” IEEE Journal on Select. Areas in Commun., vol. 19, pp. 1186-1196, June 2001.
[6]M. Z. Win and R. A. Scholtz, “Characterization of ultra-wide bandwidth wireless indoor channels: a communication-theoretic view,” IEEE Journal on Select. Area in Commun., pp. 1613-1627, vol. 20, no. 9, Dec. 2002.
[7]V. Lottici, A. D’Andrea, and U. Mengali, “Channel estimation for ultra-wideband communications,” IEEE Journal on Select. Areas in Commun., pp. 1638-1645, vol. 20, no. 9, Dec. 2002.
[8]D. C. Laney, G. M. Maggio, F. Lehmann, and L. Larson, “Multiple access for UWB impulse radio with pseudochaotic time hopping,” IEEE Journal on Select. Areas in Commun., pp. 1692-1700, vol. 20, no 9, Dec. 2002.
[9]D. Porcino, W. Hirt, “Ultra-wideband radio technology: potential and challenges ahead,” IEEE Rail Conference, pp. 201-204, no. 6-8, April.
2004.
[10]FCC, “Revision of Part 15 of the Commission’s Rules Regarding Ultra-Wideband Transmission System,” First Report and Order, ET Docket pp.98-153, Feb. 2002.
[11]C. Fowler, J. Entzminger, J. Vorum, “Report: Assessment of Ultra-Wideband Technology,” OSD/DARPA Ultra-Wideband Rader Review Panel, R-6280, 1990.
[12]Gian Mario Maggio, “An introduction to UWB,” CWC/UCSD & STMicroelectronics, Dec. 2002.
[13]M. Ghavami, Ultra wideband signals and systems in communication engineering, John Wiley & Sons, Inc., 2004.
[14]M. Z. Win and R. A. Scholtz, “On the robustness of ultra-wide bandwidth signals in dense multipath environments,” IEEE Commun. Lett., vol. 2, pp. 51-53, Feb. 1998.
[15]R. Fisher et al., “DS-UWB Physical Layer Submission to 802.15 Task Group 3a,” IEEE 802.15-04/0137r3, Motorola, Inc. et al., Jul. 2004.
[16]A. Batra et al., “Multi-band OFDM Physical Layer Proposal,” IEEE 802.15-03/267r6, Texas Instruments et al., Sept. 2003.
[17]A. Batra et al., “MultiBand OFDM Physical Layer Proposal for IEEE 802.15 Task Group 3a” MBOA-SIG, Sept. 2004.
[18]J. Foerster, E. Green, S. Somayazulu, and D. Leeper, “Ultra-Wideband Technology for Short- or Medium-Range Wireless Communications,
” Intel technology Journal, Q2, pp. 1-11, 2001.
[19]M. Ghavami, Ultra wideband signals and systems in communication engineering, John Wiley & Sons, Inc., 2004.
[20]Gian Mario Maggio, An introduction to UWB, CWC/UCSD & STMicroelectronics, December, 2002.
[21]M. L. Welborn, “System considerations for ultra-wideband wireless networks,” IEEE Radio and Wireless Conference, pp. 5-8, 2001.
[22]R. A. Scholtz, “Multiple access with time-hopping impulse modulation,” Proc. MILCOM’93, vol. 2, pp. 447-450, 1993.
[23] C. E. Perkins, Ad Hoc Networking. Addison Wesley Professional,December2000.
[24] M. Ilyas, ed., The Handbook of Ad hoc Wireless Networks. CRC Press, December 2002.
[25]M. Z. Win and R. A. Scholtz, “Ultra wide bandwidth time-hopping spread-spectrum Impulse Radio for wireless multiple access communications” IEEE Trans. on Communications, vol.48, no.4, pp. 679-691, April 2000.
[26] R. A. Horn and C. R. Johnson, Matrix analysis, Chap. 6, Cambridge University press 1985.
