Overview of WiMAX standards and applications

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WiMAX: Applications, 2007, pp. 15 - 33
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© 2008 by Taylor & Francis Group, LLC. The demand for broadband services is growing sharply today. The traditional solutions to provide high-speed broadband access is to use wired access technologies, such as cable modem, digital subscriber line (DSL), Ethernet, and fiber optic. However, it is too difficult and expensive for carriers to build and maintain wired networks, especially in rural and remote areas. Broadband wireless access (BWA) technology is a flexible, efficient, and cost-effective solution to overcome the problems. The global deregulation of radio spectrum also encourages the development of BWA technologies. WiMAX is one of the most popular BWA technologies today, which aims to provide highspeed broadband wireless access for wireless metropolitan area networks (WMANs). The air interface standard, IEEE 802.16, commonly referred to as WiMAX, is a specification for broadband wireless communication standards developed forWMANs, which supports fixed, nomadic, portable, and mobile broadband accesses and enables interoperability and coexistence ofBWAsystems from different manufacturers in a cost-effective way. Compared to the complicated wired network, aWiMAX system only consists of two parts: the WiMAX base station (BS) and WiMAX subscriber station (SS), also referred to as customer premise equipments. Therefore, it can be built quickly at a low cost. Ultimately, WiMAX is also considered as the next step in the mobile technology evolution path. The potential combination ofWiMAX andCDMA standards is referred to as 4G. This chapter gives an overview of theWiMAX standards and applications.
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