Random Coupling Model for interconnected wireless environments

An analogy is made between indoor wireless channels and lossy irregular cavities, for which a statistical physics perspective is more appropriate. A statistical model (the Random Coupling Model) for describing the coupling in and out of irregular cavities is used to study the field fluctuations in interconnected environments. It is imagined that the coupling between environments is established by apertures. Monte Carlo simulations are presented for the transfer function between terminals operating in two- and three-cavity chains. The theory confirms numerical and experimental observations of other investigators on nested reverberation chambers. In particular, it is argued that linear chains of N interconnected enclosures can emulate a N-Rayleigh scattering process. Results are of interest for creating laboratory fading channels beyond isolated electromagnetic environments.