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Showing results for tags '802.11ac'.
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The 802.11ac protocol has a number of enhancements that have been implemented in multiple phases. Wider Channel Widths 80 MHz channels (contiguous) 160 MHz channels (contiguous or two non-contiguous 80 MHz slices) 256-QAM (Quadrature amplitude modulation) Provides a 33% increase in throughput over the 64-QAM used in 11n Downlink Multi-user MIMO Allows 1 AP to transmit unique data to multiple stations simultaneously Up to 8 spatial streams Compared to a maximum of 4 spatial streams in 11n Up to 8 spatial streams in both single-user and multi-user modes No more than 4 spatial streams per station in multi-user mode Other Enhancements Single sounding & feedback format for beam forming (as opposed to multiple, incompatible formats in 11n) Coexistence mechanisms Independent virtual carrier sense in sub-channels