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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CHAPTER SIX<br />
6. Conclusion<br />
Wireless communications have been available for more than ten years. Today, 3G, Wi-Fi<br />
<strong>and</strong> WiMax are the most popular <strong>and</strong> <strong>wi</strong>dely discussed st<strong>and</strong>ards. Telecommunication industries<br />
hope that 3G can bring them new fortune, because 3G has improved enough to support e-mail<br />
<strong>and</strong> small data download. Therefore telecommunication industries want to occupy more <strong>of</strong> the<br />
market share <strong>of</strong> <strong>wi</strong>reless Internet access by using 3G technology. But compared to Wi-Fi <strong>and</strong><br />
WiMax, it is still too slow. Moreover, <strong>wi</strong>th the new coming Wi-Fi st<strong>and</strong>ard, IEEE 802.11n,<br />
WLAN becomes more powerful than before <strong>and</strong> can overcome many past limitations, such as<br />
coverage, stability <strong>and</strong> speed. It is slowly catching up <strong>wi</strong>th the capacities <strong>of</strong> <strong>wi</strong>red networks. A<br />
Wired network’s advantage is its reliability, but its biggest disadvantage is path design. In a city,<br />
to <strong>wi</strong>re a line to a house or a building is easy; however in remote or rural areas it is a huge issue.<br />
Thus WiMax is emerging as a possible solution.<br />
Parameters<br />
Table 6-1 3G, Wi-Fi <strong>and</strong> WiMax Overall Comparison<br />
St<strong>and</strong>ard<br />
3G Wi-Fi WiMax<br />
Coverage (a single tower) 2 (< 1 km) 3 1 (1 ~ 5 km)<br />
Data Rate 3 (< 300 kbps) 1 (~ 25Mbps) 2<br />
Throughput 3 2 1<br />
Mobility <strong>and</strong> h<strong>and</strong>-<strong>of</strong>f 1 3 (WiFly) 2 (WiBro)<br />
1: Very good, 2: Good, 3: Bad<br />
Table 6-1 is a comprehensive result <strong>of</strong> Table 5-11 <strong>and</strong> 5-12. 3G, Wi-Fi <strong>and</strong> WiMax. They<br />
have individual <strong>and</strong> unique fundamental technologies, but their capacities are partially<br />
overlapped. 3G can be a way to access the Internet <strong>and</strong> Wi-Fi <strong>and</strong> WiMax can provide VoIP<br />
service as an alternative for the traditional phone-call. However in Table 6-1, it can be found that<br />
for Internet service, 3G is too slow for real-time service, such as downloading larger <strong>fi</strong>les or<br />
watching online-TV. For phone-call service, VoIP’s quality is not as good as 3G; it is because <strong>of</strong><br />
the design issue. 3G is telecommunication technology <strong>and</strong> Wi-Fi <strong>and</strong> WiMax are Internet<br />
technologies. They were designed for different purposes. Even though these technologies are<br />
overlapped in the application <strong>fi</strong>eld, it is impossible for them to replace each other at this point.<br />
The overlap can be treated simply as a backup. It is better to let a cell-phone just be a cell-phone.<br />
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