MMT1-Lec2 - Computer Networks 1 (Mng My Tnh 1) Lectured by:...

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Computer Networks 1 (M ng Máy Tính 1) Lectured by: Nguy n Đứ c Thái
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Lecture 2: Communication Media Reference : Chapter 2 - “ Computer Networks ”, Andrew S. Tanenbaum, 4th Edition, Prentice Hall, 2003.
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3 Content ± Theoretical basis for data communication ± Guided transmission media ± Wireless transmission ± Digital subscriber lines ± Internet over TV cables
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4 The Theoretical Basis for Data Communication Fourier Analysis Bandwidth Bandwidth-Limited Signals Maximum Data Rate of a Channel
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5 Fourier Series
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6 Bandwidth ± Signals lose power during transmission ± Different transmission facilities diminish different Fourier components with different amounts -> distortion of signals ± Usually, high frequency components will be diminished ± Bandwidth : range of frequencies can be transmitted without being strongly attenuated
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Bandwidth-Limited Signals (1) A binary signal and its root-mean-square Fourier amplitudes. (b) – (c)
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MMT1-Lec2 - Computer Networks 1 (Mng My Tnh 1) Lectured by:...

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