Abbreviated "What is this? And how you can use it ?Simple attaching one adapter from your router into your existing electrical system, you can turn every power outlet into a possible network connection."
I'll explain;
The possibility of transferring several types of data, but only a few people at the mention of this concept think of transmission of data over the power grid, T. i. Powerline networking. Normally, users perform data transfers via a wired Ethernet or wireless network Wi-Fi. Nevertheless, the principle of data transmission network, electricity is not new and is sometimes also used for the transmission of radio signals. It is true that the youngest of these, as the supervisory body Homeplug Alliance, the first formal standard is adopted only in 2001. The first generation of interfaces yielded fairly modest theoretical transmission speeds up to 14 Mb / s, the second is the border with the help of Intellon chip companies rose on the acceptable 85 Mbit / s. At the end of 2005, followed by the next generation, subtitled AV, which allows speeds up to 200 Mb / s, which has become more attractive to a wider range of users. Currently, however, beginning to exercise a standard HomePNA 3.1, enabling speeds up to 320 Mb / s, which should be enough for HDTV television signal transmission.
For whom and when it should be considered such a network? In particular, when the flat cable is routed in the network and do not want to "change" premises installations, and when the obstacles in the way the signal is not possible to transfer data over wireless networks at lower cost. In these cases, a commissioned the existing electrical wiring. Especially when we know that the deployment of such networks very simple. All you need do is to put his jack of the computer interface, from which we draw regular network cable to network card. Then repeat the process with plug or other device or. computer that you want to connect. And that's it. The network would now have been operating, unless it is necessary to further configure the router. Otherwise, the very rationale for this kind of transmission power networks easy. Available frequency spectrum of the electric power grid is divided into a number of carrier frequencies at which the device and then transmit the data. If there is a certain frequency interference, such as noise or voltage shock, the system simply switches to another.
According to current standard AV currently possible in one house or apartment connected to sixteen Powerline interface, which for most had more than enough. But we know that on such networks can be quite badly affected by the presence of a strong consumer of electricity in the network, since at a transfer rate due to noise may fall dramatically. It is also possible to connect multiple dwellings, such as two adjacent, since communication only works to the main electric fuse box. On the other hand, networks such as itself quite well protected from intrusions, in addition, newer devices provide an additional 128-bit AES encryption.
What are the speed of such systems in practice? In the current generation now, those up to 200 Mb / s, but in practice this is unfortunately far from being achieved. Thus, the speed usually about 30 Mb / s, in rare cases up to 40 Mb / s. As it is still enough to play 720p HD video and still somehow force movies at 1080p. Although, these are in some cases already have the ability to appear less abnormality or image sticking. But we must be careful when purchasing to entice us older versions of the low prices, because they usually only reach speeds of 8-10 Mb / s, which is far from enough for advanced use.
Prices of newer (and better) interfaces both start at around 60 € about 80 $. So before you buy worth considering whether this type of network is the only solution. But it is certainly convenient to larger distances, such as the various floors of apartment buildings if there wireless signal does not reach, but we do not want installing long cables.
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