Modeling of the DECT outdoor radio channel

While originally planned for indoor use, more and more outdoor applications of DECT (Digital Enhanced Cordless Telecommunication) systems are emerging. In this paper a new wave propagation model based on imaging theory is introduced, which is especially adapted for low base station antenna heights. Comparisons with measurements and other ray tracing methods are used to evaluate the prediction accuracy and computational complexity. The advantages of ray optical models for the planning of outdoor DECT systems are demonstrated by path loss and delay spread predictions. Angle of transmission and angle of arrival diagrams are evaluated to optimize the coverage area using directive antennas