A survey of the application of the spherical vector wave mode expansion approach to antenna-channel interaction modeling

Abstract

This paper provides an overview of recent advances in the modeling, analysis, and measurements of interactions between antennas and the propagation channel in multiple antenna systems based on the spherical vector wave mode expansion of the electromagnetic field and the antenna scattering matrix. It demonstrates the importance and usefulness of this approach to gain further insights into a variety of topics such as physics‐based propagation channel modeling, mean effective gain, channel correlation, propagation channel measurements, antenna measurements and testing, the number of degrees of freedom of the radio propagation channel, channel throughput, and diversity systems. The paper puts particular emphasis on the unified approach to antenna‐channel analysis at the same time as the antenna and the channel influence are separated. Finally, the paper provides the first bibliography on the application of the spherical vector wave mode expansion of the electromagnetic field to antenna‐channel interactions.

Semi‐Analytical Model of the Rician K‐Factor

“…Currently, there is no complete understanding of the propagation characteristics at the frequency bands of interest, that is, from 500 MHz to approximately 100 GHz for Massive MIMO. As is well-known, channel models are indispensable tools for evaluating, predicting, or optimizing the performance of wireless systems (Glazunov, 2014;Glazunov et al, 2012). However, it is in general not fully possible to know exactly what channel model is the typical or the most representative one.…”

Random coupling model for the radiation of irregular apertures

“…The RCM has been developed also for antenna-cavity interactions [Gradoni et al, 2014a[Gradoni et al, , 2014b. Alternative models are present in literature to cope with wireless channel modeling [Alayon Glazunov, 2014].…”