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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Terms<br />
Table 5-8 The Comparison <strong>of</strong> WiBro <strong>and</strong> WiMax.<br />
St<strong>and</strong>ards<br />
Operation B<strong>and</strong><br />
B<strong>and</strong><strong>wi</strong>dth<br />
WiMax<br />
(IEEE 802.16-2005)<br />
2 – 11 GHz for <strong>fi</strong>xed<br />
10 – 66 GHz for mobile<br />
1.75 MHz, 3.5 MHz, 7 MHz,<br />
14 MHz, 1.25 MHz, 5 MHz,<br />
10 MHz, 15 MHz, 8.75 MHz<br />
92<br />
WiBro<br />
2.3 – 2.4 GHz<br />
10 MHz<br />
Multiplexing Burst TDM/TDMA/OFDMA OFDMA<br />
Duplexing TDD <strong>and</strong> FDD TDD<br />
Modulation QPSK, 16-QAM, 64-QAM<br />
QPSK, 16-QAM, 64-<br />
QAM<br />
Channel Coding CC, CTC, RS, LDPC CTC<br />
Data Rate 1 – 75 Mbps<br />
QoS mode<br />
5.3.4. Analysis<br />
UGS, rtPS, nrtPS, BS;<br />
ARQ/H-ARQ<br />
UL: 6.1 Mbps<br />
DL: 18.4 Mbps<br />
rtPS, nrtPS, BS;<br />
ARQ/H-ARQ<br />
Power Saving Sleep Mode, Idle Mode Sleep Mode<br />
Coverage Maximum 10 km Urban 1 km<br />
Mobility 120 km/hr 60 km/hr<br />
Other Techs AAS, AMC, MIMO AAS, AMC, MIMO<br />
WiBro has been in use for one year. However the number <strong>of</strong> users is not as high as predicted.<br />
At the end <strong>of</strong> June 2007, there were twenty thous<strong>and</strong> registered users <strong>and</strong> the goal is two hundred<br />
thous<strong>and</strong> by the end <strong>of</strong> 2007. If WiBro wants to reach this goal, it has to increase by 170,000<br />
users in half year! According to a recent study from IDC Korea, the subscribers <strong>wi</strong>ll reach<br />
130,000 at the end <strong>of</strong> 2007, 600,000 in 2008, 1.4 million in 2009 <strong>and</strong> 3.9 million in 2011. If there<br />
are various supplemental applications <strong>and</strong> devices available in the market, the number <strong>wi</strong>ll grow<br />
to 800,000 in 2008 <strong>and</strong> 5 million in 2011. This prediction may be too optimistic compared to the<br />
current situation. [84][85]