Note for Data Communication and Computer Network - DCCN By amIndian
- Data Communication and Computer Network - DCCN
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William Stallings Data and Computer Communications 7th Edition Chapter 4 Transmission Media
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Overview • Guided - wire • Unguided - wireless • Characteristics and quality determined by medium and signal • For guided, the medium is more important • For unguided, the bandwidth produced by the antenna is more important • Key concerns are data rate and distance
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Design Factors • Bandwidth —Higher bandwidth gives higher data rate • Transmission impairments —Attenuation • Interference • Number of receivers —In guided media —More receivers (multi-point) introduce more attenuation
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Electromagnetic Spectrum
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