TABLE OF CONTENTS The maximum number of simultaneous users satisfying QoS requirements, a typical capacity definition in CDMA systems, should be evaluated in both single cell and multiple cell environments, as system capacity is a basic problem to research resource management and CAC. In this chapter, we tackle this issue in a CDMA system supporting multiclass services such that a simple upper-bounded hyperplane concept is formulated to visualize the capacity of a multimedia CDMA system. The tradeoffs between the level of system resources needed for a certain user and that needed for others are illustrated analytically within the concept of resource management.
In recent years, communication systems for multimedia services such as voice, image, and data have been researched and developed in the wired communication system. The demand for multimedia services is expected to increase in the wireless communication system as well. The CDMA scheme has been proposed for a next generation wireless system that will offer multimedia services. In the wireless communication system, the system capacity, resource management, and CAC are to be considered for facilitating multimedia communications among multiple users [1] [2] [3] [4] [5]. The system capacity is a basic problem to research resource management and CAC schemes.
In a CDMA system for multimedia services, each service is specified by QoS requirements such as a target BER and an information data rate. Different types of services are characterized by their different channel quality requirements or different information data rate requirements [5], [6].
In general, different...
