WSSUS model
The WSSUS 'model' provides a statistical description of the transmission behavior of wireless channels. "Wide-sense stationarity" means the second-order moments of the channel are stationary, which means that they depends only on the time difference, while "uncorrelated scattering" refers to the delay τ due to scatterers.
Modelling of mobile channels as WSSUS has become popular among specialists. The model was introduced by Phillip A. Bello in 1963.
A commonly used description of time variant channel applies the set of Bello functions and the theory of stochastic processes.
Primary documents
- Bello, Phillip A.,, IEEE Transactions on Communications Systems, vol. 11, iss. 4, pp. 360–393, December 1963.