THE MULTIGRAPH AND STRUCTURAL ADAPTIVITY

In this paper, structurally adaptive and dynamically reconfigurable sy stems are presented as important ingredients in the design and develop ment of robust large-scale signal processing systems for operation in complex, nonstationary environments. The multigraph programming and ex ecution environment (MPEE) simplifies the design and implementation of such systems because of its graph-based computational model, support for dynamic scheduling, multiprocessor programming capabilities, model -based approach to system design, and graphic editors. Using MPEE is i llustrated by a structurally adaptive system example that highlights b oth the capabilities of the MPEE and the nature of structurally adapti ve and dynamically reconfigurable systems. This example, a signal extr action system, also shows how to deal with transients produced by abru pt changes in filter characteristics of filters during run-time.