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Chapter 8

1. Complex Exponential and Sinusoidal Amplitude Modulation (You Can Hear the Music on the Amplitude Modulation Radio -Everclear) Systems with the general form $ y(t) = x(t)c(t) $ where $ c(t) $ is the carrier signal and $ x(t) $ is the modulating signal. The carrier signal has its amplitude multiplied (modulated) by the information-bearing modulating signal.
   1. Complex exponential carrier signal: $ c(t) = e^{\omega_c t + \theta_c} $
   2. Sinusoidal carrier signal: $ c(t) = cos(\omega_c t + \theta_c ) $
2. Recovering the Information Signal $ x(t) $ Through Demodulation
   1. Synchronous
   2. Asynchronous
3. Frequency-Division Multiplexing (Use the Entire Width of that Frequency Band!)
4. Single-Sideband Sinusoidal Amplitude Modulation (Save the Bandwidth, Save the World!)
5. AM with a Pulse-Train Carrier Digital Airwaves
   1. $ c(t) = \sum_{k=-\infty}^{+\infty}\frac{sin(k\omega_c \Delta /2)}{\pi k}e^{jk\omega_c t} $
   2. Time-Division Multiplexing "Dost thou love life? Then do not squander time; for that's the stuff life is made of." -Benjamin Franklin)

Recommended Exercises: 8.1, 8.2, 8.3, 8.5, 8.8, 8.10, 8.11, 8.12, 8.21, 8.23