What do We Mean by "Systems Modeling?"
A system is a group of interdependent items which together carry out a set of functions over time to produce desired results given a set of inputs.
A DSP system is a system whose function is to process digital signals
For RASSP, we require the description of a system to include the behavior of the system in addition to the structural or physical description
Algorithmic, or
Uninterpreted (e.g., modeled by a queuing network or Petri net), or
Interpreted as functions