Wireless networking is the new face of networking. Wireless networking have been around for many years. Cell phones are also a type of wireless communication and are popular today for people talking to each other worldwide.
Wireless networking are not only less expensive than more traditional wired networking but also much easier to install. An important goal of this site is to provide you adequate knowledge for installing a wireless network and get certified in wireless networks as well as.
Perhaps you already useing wireless networking in your local coffee shop, at the airport, or in hotel lobbies, and you want to set up a small office or home network. You already know how great wireless networking is, so you want to enjoy the benefits where you live and work. It is truly transformational to one's lifestyle to decouple computing from the wires! If you are looking to set up a wireless network, you've come to the right place. We will show you the best way to set up wirless network easily. Many people are looking to find out how to use wireless networking at home.
In this wireless networking section we provides An Absolute Beginner's Guide in the perfect format for easily learning what you need to know to get up to speed with wireless network without wasting a lot of time.
The organization of this site, and the special elements that we have described in this section will help you get the information you need quickly, accurately, and with clarity. In this section you will find inspiration as well as practical information. we believe that Wireless networks is a modest technology that has the power to have a huge and positive impact. This is wonderful material, and it's lots of fun! So what are you waiting for? It's time to Go for wireless networking.
Radio frequencies (RF) are generated by antennas that propagate the waves into the air.
Antennas fall under two different categories:
directional and omni-directional.
Directional antennas are commonly used in point-to-point configurations (connecting two distant buildings), and sometimes point-to-multipoint (connecting two WLANs).
An example of a directional antenna is a Yagi antenna: this antenna allows you to adjust the direction and focus of the signal to intensify your range/reach.
Omni-directional antennas are used in point-to-multipoint configurations, where they distribute the wireless signal to other computers or devices in your WLAN. An access point would use an omni-directional antenna. These antennas can also be used for point-to-point connections, but they lack the distance that directional antennas supply
The International Telecommunication Union-Radio Communication Sector (ITU-R) is responsible for managing the radio frequency (RF) spectrum and satellite orbits for wireless communications: its main purpose is to provide for cooperation and coexistence of standards and implementations across country boundaries.
Two standards bodies are primarily responsible for implementing WLANs:
WLANs use three unlicensed bands:
A hertz (Hz) is a unit of frequency that measures the change in a state or cycle in a wave (sound or radio) or alternating current (electricity) during 1 second.
Direct Sequence Spread Spectrum (DSSS)
uses one channel to send data across all frequencies within that channel. Complementary Code Keying (CCK) is a method for encoding transmissions for higher data rates, such as 5.5 and 11 Mbps, but it still allows backward compatibility with the original 802.11 standard, which supports only 1 and 2 Mbps speeds. 802.11b and 802.11g support this transmission method.
OFDM (Orthogonal Frequency Division Multiplexing)
increases data rates by using a spread spectrum: modulation. 802.11a and 802.11g support this transmission method.
MIMO (Multiple Input Multiple Output)
transmission, which uses DSSS and/or OFDM by spreading its signal across 14 overlapping channels at 5 MHz intervals. 802.11n uses it. Use of 802.11n requires multiple antennas.
|Data Rate||54 Mbps||11 Mbps||54 Mbps||248 Mbps (with 2×2 antennas)|
|Throughput||23 Mbps||4.3 Mbps||19 Mbps||74 Mbps|
|Frequency||5 GHz||2.4 GHz||2.4 GHz||2.4 and/or 5 GHz|
|Compatibility||None||With 802.11g and the original 802.11||With 802.11b||802.11a, b, and g|
|Number of Channels||3||Up to 23||3||14|
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