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Also known as Very High Throughput (VHT), 802.11ac is currently an IEEE draft amendment that set out to break the 1 Gbps barrier, to improve Wi-Fi's spectral efficiency, and to expand on the capabilities introduced by 802.11n - MIMO radios, wider channel bandwidths, and faster Wi-Fi. 802.11n drastically improved capacity and reliability, which enabled the use of a number of new Wi-Fi applications that were previously too important for unpredictable wireless links. 802.11ac will continue to drive that trend, encouraging the preference for wireless over wired connections at the network edge. 11ac will also enable another surge in the growth of the WLAN. However, VHT deserves further discussion before the authors get caught in the flurry of eager marketing.
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