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3.5G

3.5G. 62114 xxx 51806 xxx 指導老師 : xxx. 大綱 1. 何謂 3.5G 2. 網路的演變過程 3. 與其他上網方式差異 4. 3.5G 網路連線好處 5. 3.5G 的應用 6. 3.5G 的未來 7. 心得 8. 參考資料來源. 3.5G 是什麼.

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3.5G

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  1. 3.5G 62114xxx 51806 xxx 指導老師: xxx

  2. 大綱 • 1. 何謂3.5G • 2. 網路的演變過程 • 3. 與其他上網方式差異 • 4. 3.5G網路連線好處 • 5. 3.5G的應用 • 6. 3.5G的未來 • 7. 心得 • 8. 參考資料來源

  3. 3.5G是什麼 • 3.5G(3½G)亦稱為HSDPA高速下行封包接入（High Speed Downlink Packet Access的縮寫HSDPA）是一種行動通訊協議。該協議在WCDMA下行鏈路中提供封包數據業務，在一個5MHz載波上的傳輸速率可達8-10 Mbit/s（如採用MIMO技術，則可達20 Mbit/s）。在具體實現中，採用了自適應調變編碼 (AMC)、多輸入多輸出(MIMO)、混合自動重傳請求（HARQ）、快速調度、快速小區選擇等技術。

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