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行動與無線通訊

行動與無線通訊. 第 10 章 無線通訊的多重存取 (multiple access) 技術. 本章的重要觀念. 多重存取 (multiple access) 技術是什麼 ? 有那些多重存取的技術 ? 各種無線通訊系統使用什麼樣的多重存取技術 ?. 頻率領域雙工 (FDD). MAC 技術. ALOHA Asynchronous ALOHA Slotted ALOHA CSMA CSMA/CA : collision avoidance CSMA/CD : collision detection Non-persistent P-persistent.

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行動與無線通訊

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  1. 行動與無線通訊 第10章 無線通訊的多重存取(multiple access)技術

  2. 本章的重要觀念 • 多重存取(multiple access)技術是什麼 ? • 有那些多重存取的技術 ? • 各種無線通訊系統使用什麼樣的多重存取技術 ?

  3. 頻率領域雙工(FDD)

  4. MAC技術 • ALOHA • Asynchronous ALOHA • Slotted ALOHA • CSMA • CSMA/CA : collision avoidance • CSMA/CD : collision detection • Non-persistent • P-persistent

  5. 存取控制技術的分類

  6. 有趣的隱藏節點問題

  7. 無線多重存取(multiple access)技術的簡單分類

  8. FDMA的基本原理

  9. TDMA的基本原理

  10. CDMA的基本原理

  11. 無線頻道的共用存取技術

  12. OFDM傳送端的處理(transmitter chain)

  13. OFDM中的tone

  14. 其他的多重存取技術 • Hybrid FDMA/CDMA (FCDMA) • Hybrid direct sequence/frequency hopped multiple access (DS/FHMA) • Time division CDMA (TCDMA) • Time division frequency hopping (TDFH)

  15. Q & A • 1 G與2 G行動無線系統的差別在那裡 ? • 骨幹化(trunking)與多重存取(multiple access)的涵義有何差異 ?

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