ABSTRACT
Wireless access is generically defined as the use of radio to provide access to the telephone (telecommunications) network (Calhoun, 1992). The main enabler is the electromagnetic spectrum, which can be used to carry encoded information from point to point and sustain a conversation between two people, or two computers for that matter. The greatest growth is projected in the Asia Pacific markets, where literally billions of people are still without access to telephony. The service provided by telecommunications operators is access to communications services. Wireless communications are carried on waves of electromagnetic energy from one place to another, and the way in which the electromagnetic spectrum behaves largely defines the technologies that are used for wireless communications.
