Deep mathematical analysis of noise in communication channels, signal-to-noise ratio (SNR) calculation, and system performance analysis in the presence of noise.

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Rather than presenting formulas as absolute truths, Schwartz guides the reader through the physical constraints of nature. For instance, when analyzing the capacity of a noisy channel, the book builds a bridge toward Claude Shannon’s theorems. Consider the fundamental relationship of a signal passing through a noisy channel where the received signal is modeled as:

Amplitude modulation principles and envelope detection.

Some of the key concepts in information transmission, modulation, and noise include: