TABLE OF CONTENTS Christoph M. Walke
In recent years, STAP techniques for deployment in mobile radio systems have earned intense scientific interest. Apart from applications such as mobile station (MS) localisation for location-based services, the two major objectives of STAP in mobile radio communications are the reduction of required transmission powers by exploitation of antenna or spatial diversity gains and the use of spatial multiplexing, i.e. the provision of spatial communication channels based on the spatial inhomogeneity of the propagation medium. Both objectives will be examined in detail in this chapter.
The examinations are based on a state-of-the-art cellular mobile radio system with isotropic antennas at the MS and a uniform linear antenna array with N isotropic elements at each base station (BS). The area that is to be covered by the radio system is assumed to be seamlessly paved with cells of hexagonal shape, with one fixed BS in the centre of each cell providing radio coverage for an average of K MS in each cell. The overall available transmission bandwidth B s can either be used in each cell of the system or be shared among r cells constituting a frequency cluster (see Chapter 19 of Reference 9), with r denoting the size of a cluster...
