Look, Ma, no wires!
Wireless communications take place much more often than we think, and a wide range of broadband wireless data transmission technologies are used in various frequency ranges. Broadband wireless signals occupy frequency bands that may be shared with microwave, satellite, radar, and ham radio use, for example. We use these technologies for television transmissions, cellular phones, satellite transmissions, spying, surveillance, and garage door openers. This section focuses on how wireless technologies are used in LAN environments.
When two people are talking, they are using wireless communication because their vocal cords are altering airwaves, which are signals that travel with ...