SYMBOLIC MODEL DEVELOPMENT FACILITIES FOR EVALUATION OF MSE ACCESS NETWORKS

IN APPLYING MODELING AND SIMULATION TECHNIQUES TO MODERN COMMUNICATIONS SYSTEMS PROBLEMS, THE APPLICATION ENGINEER IS FACED WITH EVER INCREASING COMPLEXITIES OF THE COMMUNICATION SYSTEM ITSELF, THE COMPLEXITY OF THE STUDY OF INTEREST, THE DATABASES FOR INPUT AND OUTPUT, AND THE DEBUGGING ACTIVITIES. GRAPHICS ARE PROVIDING THE NEW DIMENSIONS TO KEEP THESE COMPLEX OPERATIONS AT MANAGEABLE LEVELS. THIS PROJECT ALLOWS THE COMPLETE GRAPHIC DEVELOPMENT OF MODELS AND SIMULATIONS. THE GENERAL SIMULATION SYSTEM PROVIDES COMMUNICATIONS SYSTEMS ENGINEERS WITH THE ABILITY TO RAPIDLY BUILD COMPLEX MODELS, RUN SIMULATIONS, AND PRODUCE RESULTS VERY QUICKLY. PSI IS PROPOSING THAT INTERACTIVE SYMBOLIC MODEL DEVELOPMENT BE APPLIED TO THE MSE SYSTEM ACCESS NETWORKS TO DEMONSTRATE A SIGNIFICANT ENGINEERING DESIGN TOOL ENHANCEMENT FOR COMMUNICATIONS SYSTEMS. THE SIMULATION DEVELOPER CREATES THE HIGHEST LEVEL GRAPHIC DESCRIPTION OF THE MODEL TO BE BUILT, NAMING KEY INPUT, OUTPUT, AND INTERNAL FUNCTIONS AND USING STANDARD ICONS AS REQUIRED. AT ANY TIME, A HIERARCHICAL PUSHDOWN PROCESS IS INITIATED TO FURTHER DESCRIBE SUBMODELS, AND THEIR INPUT, OUTPUT, AND INTERNAL FUNCTIONS. THIS HIERARCHICAL PUSHDOWN OF MODELS CAN BE CONTINUED THROUGH SEVERAL LEVELS UNITL THE PHYSICAL PROCESS IS BEST DESCRIBED BY THE GRAPHIC PRIMITIVES OF THE SIMULATION LANGUAGE WHICH ARE AUTOMATICALLY COMPILABLE.