Chapter 7. Radio Frequency Essentials
Although it is one thing to understand the basic components of the 802.11 physical layers (PHYs), it is an entirely different task to understand when and where you can deploy wireless LANs (WLANs) and what limitations and regulations govern their deployment. As mentioned in Chapter 3, “802.11 Physical Layer Technologies,” the use of unlicensed frequencies is one of the major enabling factors that has allowed WLANs in nearly every business segment. This chapter examines the rules that you need to know when planning your wireless deployment. It is also important to know the challenges that the radio designer faces, and although this chapter will not help you design an 802.11 radio, it will help you understand ...
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