The mobile
communications industry has evolved in 3 stages:
3 generations
of mobile phones have emerged so far, each successive generation more reliable
and flexible than the last:
Analog: You could only easily use analogue
cellular to make voice calls, and typically only in any one country.
Digital mobile phone systems added fax,
data and messaging capabilities as well as voice telephone service in many
countries.
Multimedia services add high speed data
transfer to mobile devices, allowing new video, audio and other applications
through mobile phones- allowing music and television and the Internet to be
accessed through a mobile terminal.
With each new
generation of technology, the services which can de deployed on them becomes
more and more wide ranging and truly limited only by imagination. We are
reaching that stage with 3G.
During the first
and second generations different regions of the world pursued different mobile
phone classicals, but are converging to a common classical for mobile multimedia
called Third Generation (3G) that is based on CDMA technology. Europe pursued
NMT and TACS for analog and GSM for digital, North America pursued AMPS for
analog and a mix of TDMA, CDMA and GSM for digital. 3G will bring these
incompatible classicals together, and the aim of this paper is to discuss the
optimal migration path for mobile network operators to get from their existing
2G digital systems to the 3G world.
The Third Generation of mobile communications
systems will soon by implemented. Following on the heals of analog and digital
technology, the Third Generation will be digital mobile multimedia offering
broadband mobile communications with voice, video, graphics, audio and other
information.
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