  This paper presents a statistical block fading channel model for multiuser
massive MIMO system. The proposed channel model is evolved from correlation
based stochastic channel model (CBSCM) but in addition to the properties of
CBSCM, it has capability of capturing channel variations along time or
frequency and along space simultaneously. It has a simplified analytical
expression, still being able to simulate underlying physical phenomena which
otherwise need a complex geometry based stochastic channel model (GBSCM). The
channel model is verified with reported measurement data of channel for massive
MIMO. Spatial determinism in channel, the basic cause of unfavorable
propagation, is modeled into controlling parameters of channel model. Channel
model uses only three controlling parameters; one parameter describes variation
in channel along resource block (along time or frequency) and remaining two
parameters describe spatial variation in channel. Modeling of simultaneous
variation along time and space belongs to a very common scenario where mobility
of mobile terminal and angular power distribution at base station receiver, are
key parameters. Additionally, simulation results reveal the hidden advantages
of spatial determinism in channel for multiuser massive MIMO.
