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各位大大 我有一些術語不懂麻煩說明依下

頻寬

串接傳輸

同步

半雙工

以上4個術語的定義是什麼??

串音 模色散的解釋和應用??

Update:

補充一下:

要怎說明傅立葉理論並區分信號在時域與頻域的表達方式ㄋ??

說明下列技術的操作原理:

A. FSK

B. QPSK

C. QAM

分析電信電纜中電阻匹配的涵義??

說明光經由光纖傳播的情形??

分析結構佈線(Structured Wiring)不同的元件??

以上的問題都是 通訊原理的問題 麻煩大大們幫我解答^0^!

1 Answer

Rating
  • 1 decade ago
    Favorite Answer

    1. 頻寬: bandwidth 指一個通訊頻道(channel)單位時間能傳輸的資訊量, 通常用bps (bit/sec)為單位.

    2. 串接傳輸: serial communication 指使用串列方式傳輸資訊的方法.

    3. 同步: synchronize 指發送端與接收端透過某種方式使彼此的時間或時序相同.

    4. 半雙工: half-duplex 表示此通道同一時間只允許某一方向的傳輸. (全雙工 full-duplex就示同時可以雙向傳輸)

    5. 串音: cross-talk 指一個通道的資訊因為某種方式而改變了其他通道的資訊.

    6. 模色散: a distortion mechanism occurring in multimode fibers and other waveguides, in which the signal is spread in time because the propagation velocity of the optical signal is not the same for all modes. Other names for this phenomenon include modal dispersion, multimode dispersion, modal distortion, intermodal distortion, intermodal dispersion, and intermodal delay distortion.

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