Chapter 3. Serial Communication Systems and Modulation Codes
James Prettyleaf
Short digital communications links have different hardware requirements and rules (protocols) than long data links do for a number of reasons. As distances increase, frequency-dependent losses in the transmission media attenuate and delay the spectral components transmitted by the data source. Interfering radiation from man-made or natural sources will also have more opportunities to couple into data communications links as the length of the interconnection increases.
To address the preceding issues, the hardware and communication protocols for intermediate and long-distance ...
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