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An introduction to the concept of data transmission and reception, first through bandlimited baseband channels and passband channels.

We will develop the idea of data transmission by first considering simple channels. In additional modules, we will considermore practical channels; baseband channels with bandwidth constraints and passband channels.

Simple additive white gaussian channels

X t carries data, N t is a white Gaussian random process.

The concept of using different types of modulation for transmission of data is introduced in the module Signalling . The problem of demodulation and detection of signals is discussed in Demodulation and Detection .

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Source:  OpenStax, Digital communication systems. OpenStax CNX. Jan 22, 2004 Download for free at http://cnx.org/content/col10134/1.3
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