研究生: |
潘俊如 Jyun-Ru Pan |
---|---|
論文名稱: |
MIMO-WiMAX無線通道模擬器之研究 On Channel Simulator for MIMO-WiMAX |
指導教授: |
鐘太郎
Tai-Lang Jong |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
電機資訊學院 - 產業研發碩士積體電路設計專班 Industrial Technology R&D Master Program on IC Design |
論文出版年: | 2008 |
畢業學年度: | 96 |
語文別: | 中文 |
論文頁數: | 50 |
中文關鍵詞: | 多天線傳輸通道模擬器 |
外文關鍵詞: | MIMO channel simulator |
相關次數: | 點閱:1 下載:0 |
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WiMAX主要是針對移動式用戶提供長距離高速的無線傳輸,以目前越來越需要高傳輸效率的無線通訊環境,MIMO(multi-input multi-output)多輸入多輸出或是MISO(multi-input single-output)多輸入單輸出的天線傳輸模式已逐漸在發送端甚至接收端使用。以MISO為例,可以使用最單純的雙輸入單輸出2-input 1-output搭配STC(space-time coding)時空碼來達到清楚的在接收端分解出兩個不同天線傳遞的訊號,以增加傳輸效率;其效果近似於同時間可以傳輸兩筆相同的資料,因為兩個不同天線在傳輸過程中所受到的通道效應影響如:頻率偏移(Frequency Offset)、路徑損失(Path Loss)、白色高斯雜訊(AWGN)等應不會相差太多,因而提高解碼正確率。在本論文中,我們將詳細探討這些效應之間的相互關係,並建立一套多天線下的WiMAX無線通訊模擬系統,包括編碼傳送、通道及接收解碼,並將各種效應做成具GUI介面的通道模擬系統,以方便使用者輸入通道參數進行模擬,裨讓使用者可據以找出可以將多重天線更善加利用的方法。
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