Titlebook: Data Communications; An Introduction to C Robert Techo Book 1980 Springer Science+Business Media New York 1980 Area.addition.administration

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Modulation Methods,n Figure 5.1. Analog signals have continuously varying amplitudes while digital signals consist of discrete pulses. These signals, whether digital or analog, are called baseband signals. In Chapter 3 it was shown that baseband signals cannot be transmitted for any appreciable distance over a communi

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Transmission Impairments,nnel for data communications usage. In this chapter a summary is presented of the different types of impairments suffered by the communications channels and of the efforts to correct them. At all times it should be kept in mind that the net effect of these distortions is to reduce, or limit, the cap