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Wireless LANs
In just the past few years, wireless LANs have come to occupy a significant niche in the local area network market. Increasingly, organizations are finding that wireless LANs are an indispensable adjunct to traditional wired LANs, to satisfy requirements for mobility, relocation, ad hoc networking, and coverage of locations difficult to wire. This chapter provides a survey of wireless LANs. We begin with an overview that looks at the motivations for using wireless LANs and summarize the various approaches in current use. The next section examines the three principal types of wireless LANs, classified according to transmission technology: infrared, spread spectrum, and narrowband microwave.
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