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Modem Presentation
Course: EE 194, Fall 2009School: Glasgow Caledonian...
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EE194 Software Defined Radio 802.11b Modem Presentation Theory of Operation Frequency Range: 2.4Ghz ISM Band 2.4 to 2.497 GHz Up to 14 partially overlapping channels available 3 non-overlapping channels Modulation and Data Rates: Direct sequence spread spectrum (DSSS) 1 Mb/s Differential binary <a href="/keyword/phase-shift-keying/" >phase shift keying</a> (DBPSK) 2...
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EE194 Software Defined Radio 802.11b Modem Presentation Theory of Operation Frequency Range: 2.4Ghz ISM Band 2.4 to 2.497 GHz Up to 14 partially overlapping channels available 3 non-overlapping channels Modulation and Data Rates: Direct sequence spread spectrum (DSSS) 1 Mb/s Differential binary <a href="/keyword/phase-shift-keying/" >phase shift keying</a> (DBPSK) 2 Mb/s Differential quadrature <a href="/keyword/phase-shift-keying/" >phase shift keying</a> (DQPSK) 5.5 and 11 MB/s Quadrature <a href="/keyword/phase-shift-keying/" >phase shift keying</a> (QPSK) Performance Metrics Speed Up to 11 Mbit/s Dynamic rate scaling Range: 45m indoors 90m outdoors Transmit Power 1-200 mW Applications Wireless Local Area Networks Network Bridging Wireless VoIP Implementation Single chips incorporating MAC layers, baseband processors, and CPUs are available from many vendors including TI, Broadcom, and Intel. References Wikipedia: Wi-Fi http://en.wikipedia.org/wiki/Wifi IEEE 802.11 Technical Tutorial Introduction IEEE 802.11 Architecture http://www.qsl.net/n9zia/wireless/pdf/802.11.pdf
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