Smart Phone and Next Generation Mobile Computing

106 Smart Phone and Next-Generation Mobile Computing

satellites, as well as some global environmental monitoring satel-

lites. Part of the UHF and SHF bands are used for military satellite

communication.

•

Radio frequency remote control, such as remote keyless entry sys-

tems and garage door openers. These short-range wireless system

commonly used for automobiles operates at 27 MHz, 128 MHz,

418 MHz, 433 MHz, and 868 MHz in the United States; 315 MHz

and 915 MHz in Europe; and 426 MHz and 868 MHz in Japan.

3.2 Wireless Communication Primer

For our in-depth discussion of the many sophisticated mobile wireless

network technologies, a basic understanding of wireless communi-

cations is necessary. Here, a primer of concepts within the domain

of wireless communication ...