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IEEE 802.11 Wireless LANs

Unit 11 IEEE Wireless LANsShyam ParekhShyam ParekhShyam ParekhShyam ParekhIEEE Wireless LANs References Standards Basics Physical Layer MAC Framing Details Management PCF QoS ( ) Security Take Away PointsTOC Wireless Networks: The Definitive Guide, M. Gast, O Reilly, 2002* ANSI/IEEE Std , 1999 Edition ANSI/IEEE Std ANSI/IEEE Std *Most drawings used in the lectures are from this bookTOC ReferencesIEEE 802 Standards & OSI Model Observe MAC is common to all Physical Layer (PHY) standards PHY is split into Physical Layer Convergence Procedure (PLCP) and Physical Medium Dependent (PMD)

802.11b 11 Mbps 2.4 GHz 802.11g 54 Mbps 2.4 GHz 802.11a 54 Mbps 5 GHz 802.11 2 Mbps 2.4 GHz Key Standards Max Rate Spectrum (U.S.) 2.4 – 2.5 GHz for all above except 802.11a (referred to as C-Band Industrial, Scientific, and Medical (ISM)) Microwave ovens and some cordless phones operate in the same band

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