Simple approximation of power azimuth spectrum for multipath propagation environment

This paper presents simple approximation of the power azimuth spectrum (PAS) that can extend the capabilities of propagation models used in simulation studies for multipath propagation environment. Described angular distribution of power is the first presented analytical form that maps PAS based on the transmission characteristics of the environment. Closeform expression describes three main subset components: delay components, locally scattered components and direct path component. Thus, presented PAS model is called the delayed and local components model (DLCM). The statistical properties of received signals and multi-elliptical propagation model are used to define individual components of analytical form for this model. Results for DLCM are compared with other models as well as with experimental results available for different propagation scenarios. Comparative analysis shows very close agreement of developed model with experimental data and also better fit compared to the existing PAS models.