Actually I do
not understand very well about CDMA, but here I will always try to learn and
share with you about what I've learned. I'll share a little about the
characteristics of CDMA BTS to do with the signal or internet speed you get.
All that would tip-unjungnya associated with the position of determining
achievement. The better position you get the better speed you will get.
Lots of
wireless broadband internet users / mobile broadband internet to the chagrin of
the quality obtained. Not only Smartfren only. If you are searching on Google
with the keywords that disfigure an operator there must be a blog or a forum to
discuss it.
Many users are
asking, in his ads have promised speed up to 3.1 Mbps to 14.7 Mbps even up, but
why the speed that I got did not achieve much, boro-boro, people can not have
half of it? Pledge up to 3.1 Mbps speed but I got under 1 Mbps. How ya quality,
really like this degenerate?
Remember! You
are a user of wireless broadband that uses radio / RF as medium of instruction,
not to be confused with cable internet users. Users of mobile broadband /
wireless broadband interference prone to occur. Location, weather, user
density, building thick, modems are used, they become a source of broadband
wireless internet interference. But beneath the user's wireless broadband
interference is perfect for those of you who have a high mobility, often
sedentary, nomadic.
Below I
provide a screenshot of how you can determine the position of the achievements,
the more you get closer to the base stations that you get high speed.
Blue graph
while the graph for EVDO Rev.B yellow for EVDO Rev.A. That is a picture
kasarannya speed would you get based on location, where the signal to the user
there is no interruption or is not blocked by buildings. The more remote your
location with a smaller base stations also speed you get.
While the CDMA
network using frequencies in the 800 Mhz and 1900 Mhz. There are both
differences in the resulting digital sound frequency 1900 MHz is much more
clearly than the 800 Mhz. But the 1900 MHz range is also shorter than the 800
Mhz. 800 Mhz frequency can reach up to 5-6 km, while 1900 MHz is only capable
of up to 2 Km. If you already know where you are much closer to the BTS or BTS
then you can predict your own.
Then there is
the case, in the picture above my location is at the median rate, but why do I
get speed like in the Cell edge rate? As I said above, the maximum speed can be
obtained from the signal until the user does not experience problems such as
high-rise buildings, mountains, buildings and others. We see the following
picture :
Direct ray
signal means that up to the user unobstructed. While the reflected ray signal
means that up to the user through the reflection of the form of buildings,
mountains, or other buildings. So if your site is surrounded by tall buildings,
why can signal to you? That's because the signal is reflected by the buildings
themselves, rather than penetrate. So while the direct ray is much better than
the reflected ray. If the location you are in the direct rays of the speed you
get will be better than the location of the reflected rays are on.
Then someone
asks me again, my location there are no high buildings, the signal is good, but
why speed is still slow? We see again the following picture :
There are
weaknesses in the CDMA base station signal coverage will be strongly influenced
by how many users. The more users who use the internet at the same time it also
narrowed the range. If we again see the first image above, you could initially
be in the position of Peak rate, but as we get the user (the same with your
operator) then your position might be in the median rate. Again this affects
the quality of the internet.
Then there is
the question again, I was a bit of user location, but why do I get the speed is
still slow? From where you know the user at the location you were little? You
have a survey? Ditanyain to people one on one, or ask you to pack camat?
Okay, let's
say you are correct, the user at the location you were little, and some have
said, Internet users in my area but dense but why do I get internet speed is
still high huh? The capacity of each BTS would differ, this is all that
determines the respective ISP. If at one location is considered necessary to
upgrade the capacity of the BTS for a growing user may then be performed. If a
location has not felt the need to upgrade considerations may even spend the
money only, it is not upgradeable.
Once again
here I am still learning so maybe do not know much about it. However, hopefully
a little explanation about the characteristics of the CDMA base stations are
able to give my knowledge to you, and hopefully you can accept the current
state of your internet.
Image credit
by Kaskus.us
May be useful for you
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