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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
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802.11 802.11a 802.11b 802.11g 802.11n Adaptive antenna system (AAS) Adaptive Antenna System (AAS) Delay spread Doppler spread Fading in wireless communications Frequency reuse Handoff protocols Intercell and intracell handover ISM bands M3QD4D WaS HeRe !! OFDM Paging system Simplex, half-duplex and full-duplex Types of cellular networks Types of spectrum sharing WiMax service classes
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Adaptive Antenna System (AAS)
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AAS stands for Adaptive Antenna System, which uses beam forming to enable a base station (BS) to direct signals to specific subscribing stations (SS), even though they may operate on the same subchannel(s). AAS uses an array of antennas at the BS to increase gain to an intended SS while nulling out interferences to and from other SSs and interference sources. AAS can be used for Spatial Division Multiple Access (SDMA), such that multiple SSs that are separate spatially can use the same set of subchannels to transmit data.
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Added: 16th February 2007 01:06:13 AM Modified: 16th February 2007 01:06:13 AM
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