Signalling

Throughout this tutorial, I am going to use one simple analogy, a piece of string tied to a doorknob or other fixed object. A human will be at the other end of the string, shaking it up and down or side to side. As you read through each of the following pages, keep this string and doorknob example in mind.

• Signals
  • Frequency
  • Amplitude
  • Phase
  • Strength
• Analog vs. Digital
• Media and Propagation
• Transmitters and Receivers
• Carrier Signals
• Broadband
• Baseband
• Sideband
• Out-of-Band
• Modulation
• Signal Constellations