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研究生: 游象廣
Xiang-Guang Yu
論文名稱: 正交分頻多工系統之細胞涵蓋範圍估測之研究
指導教授: 陳永芳
Yung-Fang Chen
口試委員:
學位類別: 碩士
Master
系所名稱: 資訊電機學院 - 通訊工程學系在職專班
Executive Master of Communication Engineering
畢業學年度: 94
語文別: 中文
論文頁數: 60
中文關鍵詞: 範圍估測
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  • 目前數位通信系統技術與服務已經在全世界被廣泛的使用,如今面對使用者對數據傳輸的速度需求日增的情況下,而產生效能更佳IEEE 802.16-2004系統;它是使用正交分頻多工(Orthogonal Frequency Division Multiple, OFDM)的工作模式。而正交分頻多工系統是一種有效率的方式,能夠同時達到高傳輸率並且對抗碼際干擾,其具有多個載波,當通道面對各式各樣的環境時,而頻率選擇性衰落及多路徑的影響,使其傳輸距離也各也差異,本論文是對IEEE 802.16-2004 的系統上,因電波傳播的特性將影響發射機及接收機之間的通訊品質,所以我們在本篇論文中,主要探討發射端與接收端在各種環境的電波傳播數據上去估測和分析涵蓋範圍。然而我們如何去估測在這特定的環境中,傳播涵蓋距離和特定的發射功率,可供多少使用者使用,也將詳細說明。


    Digital communication technology and service have been widely used and applied around the globe. An increasing demand of greater transmission rates by users has resulted in IEEE 802.16-2004 systems with better efficiency. The systems employ OFDM (Orthogonal Frequency Division Multiplexing), which is a promising technology and is able to combat ISI. In this research we focus on the IEEE 802.16-2004 systems. The characteristics of propagation affect highly the quality of communication between the transmitter and the receiver. Therefore, in this research, we focus on estimating the coverage in the transmission data of electric waves between the transmitter and the receiver in various environments. At the same time, we go into details how to estimate coverage, transmission power, and the number of users in various operational environments.

    第一章 緒論 1 1-1 前言 1 1-2 論文章節概要 2 第二章 IEEE 802.16-2004 簡介 3 2-1 IEEE 802.16-2004 規範標準 4 2-2 WiMAX、Wi-Fi與3G的比較 5 2-2-1 WiMAX與Wi-Fi比較 5 2-2-1 WiMAX與3G的比較 7 2-3 IEEE 802.16 PHY(物理層) 8 第三章 系統模型 9 3-1 IEEE 802.16-2004傳輸系統模型建構 9 3-1-1 傳送訊號模型 10 3-1-2 通道數學模型 11 3-1-3 接收訊號數學模型 12 3-2 傳播模式的敘述 13 3-2-1 自由空間路徑損失 13 3-2-2 多路徑衰減 (Multipath fading) 14 3-2-3 視線傳播(LOS)與非視線傳播(NLOS) 14 3-2-4 Walfish-Ikegami 的街道型路徑損失 16 3-3 估測距離數學模型 17 3-3-1 接收功率數學模型 18 3-3-2 熱雜訊功率(Thermal Noise Power)數學模型 19 第四章 模擬與分析 20 4-1 通道模型參數 21 4-2 AWGN 通道模擬 26 4-2-1 AWGN 通道模擬1---BER 為 27 4-2-2 AWGN 模擬2---BER 為 33 4-2-3 AWGN 模擬3---BER 為 38 4-3 SUI 通道模擬 41 4-3-1 SUI-1 通道模擬 41 4-3-2 SUI-2 通道模擬 44 4-3-3 SUI-3 通道模擬 46 4-3-4 SUI-4 通道模擬 49 4-3-5 SUI-5 通道模擬 51 4-3-6 SUI-6 通道模擬 54 第五章 結論 58 參考文獻 60

    參考文獻
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    [10] IEEE 802.16 Broadband Wireless Access Working Group
    http://ieee802.org/16

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