0 The development of wireless technology (wireless)

The development of wireless technology (wireless) data communication in the era of an increasingly globalizing rapidly and this has brought the community through several stages of technology development as well.
The first generation (1G) wireless technology development is characterized by the development of an analog system with low speed (low speed) and sound as the main object. Two examples of wireless technology development in this first stage is the NMT (Nordic Mobile Telephone) and AMPS (Analog Mobile Phone System). 
 The second generation (2G) wireless technology standard used as a commercial with a digital format, low speed - high. Example: GSM and CDMA2000 1xRTT. Before entering into the development of third generation technology (3G), many people often insert a single stage of development, Generation 2.5 (2.5 G) wireless data communications technology that is digital, high speed (up to 150 Kbps). The technology includes 2.5 G is a category of data-based services such as GPRS (General Packet Radio Service) and EDGE (Enhance Data rate for GSM Evolution) in the GSM domain and PDN (Packet Data Network) in the CDMA domain.
Meanwhile, the next development stage is the third generation, high speed digital generation, capable of transferring data at high speed (high-speed) and multimedia applications, to broad band (broadband). Example: W-CDMA (also known as UMTS) and CDMA2000 1xEV-DO.
The next generation is the development of 3G is a 4G (fourth generation). The official name of this 4G technology by IEEE (Institute of Electrical and Electronics Engineers) is "3G and beyond". Before 4G, High-Speed Downlink Packet Access (HSDPA) which is sometimes referred to as 3.5G technology has been developed by the WCDMA the same as CDMA2000 EV-DO development. HSDPA is a protocol that provides mobile phone network evolution path for Universal Mobile Telecommunications System (UMTS) that would provide greater data capacity (up to 14.4 Mbit / sec-way down).