What is the Difference Between 802.11B, 802.11G, and 802.11N? Print

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The Institute of Electrical and Electronics Engineers (IEEE) certified a new standard, 802.11g, by merging two incompatible wireless networking standards 802.11b (goes far but not fast) and 802.11a (goes fast but not far). The new "g" standard has a 150-foot range, and the top speed is 54 Mbps (as opposed to 11 Mbps that we had with the "b" standard).


Among its key innovations, 802.11n adds technology called multiple-input multiple-output (MIMO), a signal processing and smart antenna technique for transmitting multiple data streams through multiple antennas.  This results in up to five times the performance and up to twice the range compared to the earlier 802.11g standard.


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