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The advent of ubiquitous computing and the proliferation of portable c- puting devices have raised the importance of mobile and wireless networking. Recently, there has been a tremendous interest in broadband wireless access systems, including wireless local area networks (WLANs), broadband wireless access,andwirelesspersonalareanetworks(WPANs). Thisdomainisasubject ofhugeresearchandmanystandardizationactivitiesareundertakenthroughout the world. Based on the most recent developments in the ?eld of wireless techno- gies related to WLAN, WPAN, wireless sensor networks (WSN) and wireless metropolitan area network (WMAN), this book gives a detailed description of the widespread or recently used standards like Wi-Fi, Bluetooth, ZigBee, and WiMAX. Our book aims at regrouping in a single volume up-to-date inf- mation related to these different technologies, which can be used separately or combined to provide speci?c applications. The emergence of these very promising systems is mainly due tog
