![]() As in the 802.11a / b / g network connection, each 802.11n device uses the built-in Wi-Fi channel to transmit. MIMO helps increase the range and throughput of wireless networks.Īn additional technique used by 802.11n involves increasing channel bandwidth. 802.11n supports up to 4 streams simultaneously. The term MIMO (Multiple Input, Multiple Output) refers to the ability of 802.11n and similar technologies to coordinate multiple radio signals simultaneously. As a result, some vendors have provided hybrid network devices for 802.11a / b, but these products merely implement these two standards in parallel (each connected device must use either, cannot simultaneous use of both).Ĩ02.11n uses many parallel wireless antennas to transmit and receive data. With this frequency, 802.11a signals are also more difficult to penetrate walls and other obstructions.īecause 802.11a and 802.11b use different frequencies, these two technologies cannot be compatible with each other. The frequency of 802.11a is higher than that of 802.11b, thus making the scope of this system narrower than that of 802.11b networks. Because of the higher cost, 802.11a is often used in enterprise networks, and 802.11b is more suitable for the home network market.Ĩ02.11a supports bandwidth up to 54 Mbps and signals in a specified frequency spectrum around 5GHz. However, in fact, 802.11a and 802.11b are created simultaneously. Because 802.11b is widely used too fast compared to 802.11a, some people believe that 802.11a was created after 802.11b. While 802.11b is still being developed, IEEE created a second extension to the 802.11 standard called 802.11a. ![]() However, by installing devices 802.11b away from such devices can reduce this interference phenomenon.ĭisadvantages of 802.11b - the lowest maximum speed Household appliances may interfere with the radio frequency that 802.11b has captured. 802.11b devices can be interfered with wireless devices (extended), microwaves or other devices using the same 2.4 GHz frequency range. Suppliers like to use this frequency to reduce production costs. This standard supports bandwidth up to 11Mbps, equivalent to traditional Ethernet.Ĩ02.11b uses unregulated radio signal frequency (2.4 GHz) like the original 802.11 standard. IEEE expanded on the original 802.11 standard in July 1999, creating the 802.11b standard. For that reason, the original 802.11 standard wireless products were no longer produced. However, 802.11 only supports the maximum network bandwidth of up to 2Mbps - too slow for most applications. This standard is called 802.11 after the name of the group is set up to monitor its development. In 1997, the Institute of Electrical and Electronics Engineers (IEEE) introduced a first standard for WLAN.
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