A comparison of wi-fi and wimax with case studies - Florida State ...
A comparison of wi-fi and wimax with case studies - Florida State ...
A comparison of wi-fi and wimax with case studies - Florida State ...
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2.3. Development<br />
3G has been in development for couple years already. During this period <strong>of</strong> time, the<br />
telecommunication industry almost crashed in Europe. 3G is a promising technology, but the<br />
over-expectation made the European telecommunication industries spend too much money on<br />
the license <strong>of</strong> b<strong>and</strong> operation, set up infrastructures <strong>and</strong> marketing. The result was that many<br />
companies cannot recoup their pr<strong>of</strong>its, <strong>and</strong> many <strong>of</strong> them had to give up the license <strong>and</strong> projects<br />
in order to lower the debt or litigate <strong>wi</strong>th government. These facts caused the development <strong>of</strong> 3G<br />
slowed down greatly in Europe. The most successful <strong>case</strong> in Asia is Japan. There are two<br />
companies running the business, NTT DoCoMo <strong>and</strong> KDDI. The NTT DoCoMo uses WCDMA<br />
<strong>and</strong> KDDI uses CDMA2000. Taiwan initialed the 3G service in 2005. In North America 3G is in<br />
sprout stage. Around the world, there are total 29 countries has 3G network so far. Figure 2-1<br />
shows the evolution steps <strong>of</strong> 3G. [69][77]<br />
Figure 2-1 The Evolution <strong>of</strong> 3G<br />
The popularization <strong>of</strong> 3G has several factors, such as the user’s habits, market positioning,<br />
applications, <strong>and</strong> infrastructures. 3G has two opponents which are Wi-Fi <strong>and</strong> WiMax. They<br />
could be partners or enemies <strong>and</strong> it all depends on applications <strong>and</strong> market positioning. These<br />
<strong>wi</strong>reless st<strong>and</strong>ards have their own advantages. 3G has bigger coverage <strong>and</strong> support mobility, but<br />
has lower data rate, <strong>and</strong> Wi-Fi has higher data rate, but smaller coverage <strong>and</strong> does not support<br />
7