A DEVS-based framework for simulation optimization: Case study of Link-11 gateway parameter tuning

Discrete event system specifications (DEVS) is a mathematical formalism based on system theoretic principles, which has evolved with state-of-technologies implementation over the past few decades. In this paper, we discuss a DEVS framework to solve parameter optimization problems. As a case study, we consider the Link-11 gateway that has been developed by the Joint Interoperability Test Command (JITC) is to provide interoperability between Link-11 network and TCP/IP network. The performance of Link-11 gateway is highly sensitive to the sampling rate of soundcards since the frame time of Link-11 signal is very short. Unfortunately, the sampling rate is not as accurate as it is specified by the manufacture of soundcards. A solution is to search for an optimized parameter that can be used to adjust the sampling rate. We apply an optimization technique to search for optimal sampling rate in modeling and simulation environment, DEVSJAVA. The DEVS-based framework can facilitate efficient global optimal parameter search capability and reduce execution time benefiting from its parallel and variable structure implementation.