The global wireless web

Expectations are that by the end of the first quarter of the next century, accessibility to the telephone will be universal. Virtually, the entire population will be free of the telephone cord and the home or office connection. To meet these expectations, more effective utilization of available cellular bandwidth is needed. As demand for higher performance and increased bandwidth grows, the need for compound semiconductors, which are already used in cordless telephone sets and in some networks, will also grow. This article presents an overview of wireless systems, and methods used for signal modulation coding and decoding, flexible satellites, and handset and hardware requirements will be discussed. Laced with the hardware discussion will be the uses of compound semiconductor devices and circuits.