Development of Cellular Technology develops very quickly, so the phone function is not in use as a communications course, with additions of features such as digital cameras, radio, high-resolution color LCD mobile phone into a sophisticated and smart devices.
Wireless Communications Mobile is a tool that is moving without a cable communications that were numbered with Mobile Divice. This wireless technology has grown rapidly in the last decade. The principle of this wireless communication using a separate radio channel to communicate with cell sites.
The phone is a combination of Radio Technology is mated with Phone Communication Technology. The phone was first discovered and invented by Alexander Graham Bell in 1876. while the wireless communication (wireless) discovered by Nikolai Tesla in 1880 and introduced by Guglielmo Marconi.
The roots of the development of digital wireless and cellular technology began in 1940 when car phones were introduced commercially. When compared with current developments are so rapid, in fact this technology is experiencing bottlenecks in development for about 60 years. This is in because the development of cheaper technologies such as transistors or semi-conductors is not well developed. After the temukannya transistors will be possible to more rapid development of technology.
With the development of wireless technologies emerging today is the cordless phone technology (wireless) including
AMPS (Advanced Mobile Phone System), GSM (Global System for Mobile System) and CDMA (Code Division Multiple Access).
source: reliable
