How to increase the speed of 3G modem standard CDMA?

Somehow imperceptibly, on soft paws, it's timeHigh speeds and low tariffs for Internet connection. Now no one is surprised by access to the global network at speeds over 100 Megabit, especially in large cities. However, all this is realized with the help of wires: optical lines or usual wire harnesses - the essence is the same. But residents of remote areas and villages, where there are no cable providers, to connect to the Internet have to be satisfied with the proposals of wireless operators. Their fares are much higher, and speeds are lower. For example, one of the most advanced technologies CDMA Rev.B theoretically allows to provide access speed of only up to 14 Megabit, which for city dwellers is "yesterday's day". It is understandable that in such circumstances, every wireless Internet user would like to know how to increase the speed of a 3G modem.

This is what we are going to talk about today, and as aexample consider CDMA EVDO modems. Although there are several modifications of CDMA, differing primarily by the carrier frequency, the bases mentioned in this work are suitable for any user wishing to increase the speed of the 3G modem.

Anticipating the questions, let us touch upon a few theoreticalbases. First, any provider in the description of tariffs indicates the speed of access to the network, for example, up to 3.1 Mb / s. Users who connect to the wireless Internet for the first time often wonder why it's not that 3.1, but even 2 megabits can be achieved extremely rarely. There is no deceit: prefix "To" fully justifies itself, alas. However, nothing prevents to understand the issue and understand how to increase the speed of the 3G modem to the maximum possible, especially since it is possible for anyone who is given such a goal.

Secondly, the speed of wireless Internetwill never be stable: it "swims" from hour to hour. Each tower has a fixed speed of its own communication channel, although it is quite large. Subscribers who connect at a certain point in time, share this speed among themselves, like an orange. Accordingly, the first answer to the question of how to increase the speed of the 3G modem is to use a CDMA modem in the coverage area of ​​the least loaded station at the right time. In other words, the speed will be higher in areas with a low population density of an hour at three nights than in the center of a large city in business time.

Well, let's leave the theory alone and indicate what and whereIt is necessary to "twist" to achieve outstanding results. How to increase the speed of the 3G modem? Just! It is noticed that different models of modems show different speeds, all other things being equal. The implementation of the receiving-transmitting unit, the ergonomics of the placement of internal components to a great extent affect the result. For example, some models after 2-3 hours of operation are substantially heated and begin to fail, which is immediately noticeable on the speed graph. We check the working modem - it should be warm, but not hot.

Any USB 3G modem consumes from the portspecific current. And, usually it's 500 mA. For the USB 2.0 standard, this is the limit. Therefore, if a modem and any other device are connected to one USB hub, the power will not be enough, which will affect the work. Do you have more than half of the USB connectors? In this case, you need to purchase a hub-splitter with an external power supply. As an option: it is permissible to connect the modem via Y-cable. It has three ends: two are connected to the connectors on the computer, and the third goes to the modem.

If it's still not clear how to increase the 3G speedmodem, then we proceed in the cardinal way: we install an external antenna. The height at which it can be lifted is limited by the cable - its length should not exceed 10 m. On the cable it is not necessary to save, buy quality! By the way, do not forget to orient the antenna to the base station.

It is also useful to update the modem driver and optimize the connection with a special program.

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