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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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802.11
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802.11 is the first standard of wireless local area network (WLAN), defined for MAC layer operation and three physical layers: DSSS and FHSS in the 2.4GHz band, and diffuse infrared (DFIR). For FHSS, the hop rates are not specified, but most 802.11 equipment hops between 10 and 50 channels per second. The DSSS implementation in the United States specifies 11 fixed channels, starting at 2412 MHz and spaced every 5MHz. 802.11 WLAN provides either 1 or 2Mb/s raw data rates over distances up to about 100 m.
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Added: 25th October 2006 12:44:22 AM Modified: 25th October 2006 12:44:22 AM
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