A first-principles model of time-dependent variations in transmission   through a fluctuating scattering environment
  Fading is the time-dependent variation in transmitted signal strength through a complex medium, due to interference or temporally evolving multipath scattering. In this paper we use random matrix theory (RMT) to establish a first-principles model for fading, including both universal and non-universal effects. This model provides a more general understanding of the most common statistical models (Rayleigh fading and Rice fading) and provides a detailed physical basis for their parameters. We also report experimental tests on two ray-chaotic microwave cavities. The results show that our RMT model agrees with the Rayleigh/Rice models in the high loss regime, but there are strong deviations in low-loss systems where the RMT approach describes the data well. 
Jen-Hao Yeh, Thomas M. Antonsen, Edward Ott, Steven M. Anlage
nlin.CD cond-mat.stat-mech stat.AP