This is the third in a series of computer science lessons about wireless communication and digital signal processing. In these lessons you’ll learn about the nature of electromagnetic radiation, digital modulation and multiplexing techniques, and how to get the best out of mobile communication systems such as LTE, 5G and WiFi. This lesson takes a closer look at the radio frequency bands of the electromagnetic spectrum. You will learn how these RF bands are used by various industries including marine, submarine, aviation, science, engineering, medicine and broadcasting. You will also learn that the higher frequency bands are particularly important for mobile communications and WiFi. The impact of frequency on how far a radio signal can travel and how much data it can carry, is discussed. The impact of the amount of power that a radio signal contains, and how power is measured, is also mentioned.

Chapters:
00:00 Radio frequency bands
06:46 WiFi frequencies
08:27 Radio signal power