Technology advances and new frequency allocations for personal communication services (PCS) are creating numerous business and technical opportunities. An important requirement for exploiting opportunities is the ability to track the dramatic changes in wireless technology, which is a principal focus of this book. It places particular emphasis on the areas of signal processing, propagation and spread spectrum, and emerging communication systems. It also contains new results on adaptive antennas for capacity improvements in wireless communication systems, as well as state-of-the-art information on recent technical developments. Also included are several chapters which discuss the impact of defence conversion on the wireless industry, and related competitive issues. The first part of the book contains several tutorial chapters on key areas in wireless communications; the second focuses on digital signal processing and spread spectrum, two means of creating interference and multipath robust communications; the third concerns propagation aspects of wireless communications; the fourth discusses the performance of emerging wireless systems; and the fifth describes the opportunities and pitfalls of defence conversion from the perspective of several US defence firms that have successfully made the transition to commercial wireless.