Experimental Analysis of Physical Interacting Objects of a Building at mmWave Frequencies

Understanding the evolution of multipath components (MPCs) in real radio channels is crucial to enhancing channel modeling and multipath-assisted positioning. This paper provides an experimental analysis of the behavior of MPCs originating from a standard building facade at millimeter wave (mmWave) frequencies. Utilizing a high-resolution channel parameter estimation method alongside a joint clustering and tracking technique, we identify physical interacting objects and analyze their lifetimes and quantities. The building wall under study is shown to have many distributed distinct backscattering points and reflection contributions due to the windows. Our findings shed light on the reflection and scattering patterns from standard building elements, highlighting the importance of including them in channel models, positioning methods, and ray tracing simulations.