ABSTRACT
This chapter has two main purposes. First, it focuses on basic communications concepts that will provide us with knowledge concerning the manner by which wireless LANs transport information. The information it covers ranges in scope from a basic discussion of frequency, bandwidth, and wavelength to modulation methods and antenna design and performance parameters. The second portion of this chapter focuses on the terminology associated with wireless LANs. In addition, as we explore the operation of various wireless LAN devices, we probe deeper into the technology that makes them work. Now that we have a game plan for where we are headed, let’s go there, first turning our attention toward obtaining knowledge of basic communications concepts.
