  Cyber Physical Systems (CPSs) are the result of convergence of computation,
networking, and control of physical process. In this paper, we consider an
industrial CPS consisting of several control plants and Rate Constrained (RC)
users that communicate via a single cell OFDMA network. The problem of jointly
determining the sampling instant of each control plant and allocating power and
sub-carrier, in the CPS, is formulated. The problem is a multi objective
optimization with aims of determining the next maximum allowable sampling
instant of each control plant and minimizing the power consumption in uplink
and downlink, considering the dynamics and desired performance of control
plants, the quality of service requirement of RC users, power and sub-carrier
constraints. To solve the multi objective optimization problem, a novel
approach is proposed which decomposes the optimization problem into two smaller
loosely coupled problems. we show the effectiveness of the proposed approach
through simulation results.
