  This paper is concerned with H2 control of discrete-time linear systems with
dynamics determined by an independent and identically distributed (i.i.d.)
process. A definition of H2 norm is first discussed for the class of systems.
Then, a linear matrix inequality (LMI) condition is derived for the associated
performance analysis, which is tractable in the sense of numerical computation.
The results about analysis are also extended toward state-feedback controller
synthesis.
