Tremendous achievements of wireless world is providing more enjoyable lifestyle to us. Especially, watching HD movies via stream is edge corner now for end users like me.
Mobile trend is growing rapidly. Following figure shows the interesting statical result from JohnHughes blog.
Because of the importance of smart phones, we are facing with enhancing wireless mobile telecommunication technologies day by day.
We are planning to explain actual speed rates of each technologies by starting with GPRS technologies briefly.
2G technologies could not reach the Mbps speed rates unfortunately except EGPRS-2. EDGE has 237 kpbs DL speed theoretically. it varies between 120Kbps to 384Kbps practically for per user. Other name of EDGE is 2.75G.
With the introducing WCDMA, we have met superior speed rates. above picture demonstrates the performances of 3G and 4G techs.
Thi biggest issue for high speed wireless networks is the lack of bandwidth. We can say it also as range of usable frequencies. So we put following pictures from speedtest.net to compare pratical and theoretical results for user speed rates.
4G VERIZON USA
4G AVUSTRALIA
4G TMO EURO
Note: I checked the users fro this test and one user speed rate was 980.92 Mb/s within 188 total tests . I subtracted that one and recalculated the speed test and it was ~10Mbps like in Verizon USA.
Speed of Wireless techs has a lot of obstacles like total user, location and velocity, many type of interferences, total users etc. But we can say , humanity has got very good achievements about it during this decade and we can easily say that 4G is really great even though it can not be able to reach to wireline speeds at least these years.
REFERENCES
http://www.gsma.com/
http://autoblog.johnhughes.com.au
http://www.speedguide.net/faq_in_q.php?qid=366
http://www.radio-electronics.com/
http://www.speedtest.net
http://www.wisegeek.com/what-is-evdo.htm
http://www.zdnet.com
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