PCS system design issues in the presence of microwave OFS

There are many important technical issues concerning the design of the next generation personal communication services (PCS) systems. These issues include microcell and macrocell propagation prediction models, multiple access technologies, and interference between PCS users and microwave Operational Fixed Service (OFS) users. The purpose of this paper is to show that microcells PCS system design contributes less interference power to the OFS users than conventional system design. Robust microcell and macrocell propagation models, such as GTD and COST-231, and PCS/OFS field measurement and interference computation techniques can be used effectively to aide the PCS system design process. The propagation models use a combination of terrain, morphology, and building database for macrocell and microcell predictions and signal strength measurements for accuracy optimization. In addition, a case study is provided to exemplify the discussed supposition that microcell (base stations well below the surrounding buildings clutter with low transmitter power) system design minimizes microwave OFS interference and their immediate relocation. Practical interference calculations between different wireless systems are also discussed.