  The communication for the control of distributed energy generation (DEG) in
microgrid is discussed. Due to the requirement of realtime transmission, weak
or no explicit channel coding is used for the message of system state. To
protect the reliability of the uncoded or weakly encoded messages, the system
dynamics are considered as a `nature encoding' similar to convolution code, due
to its redundancy in time. For systems with or without explicit channel coding,
two decoding procedures based on Kalman filtering and Pearl's Belief
Propagation, in a similar manner to Turbo processing in traditional data
communication systems, are proposed. Numerical simulations have demonstrated
the validity of the schemes, using a linear model of electric generator dynamic
system.
