A model reduction procedure for high level canonical PWL function

PEDRO JULIÁN; MARÍA BELÉN D'AMICO; ALFREDO DESAGES

Ginebra

Simposio; IEEE International Symposium on Circuits and Systems (ISCAS 2000); 2000

IEEE CAS Society

The canonical expression introduced in [1] has the degrees of freedom which are necessary to represent any PWL function defined over a compact rectangular set of arbitrary dimension subdivided by a simplicial boundary configuration with step grid \delta. However, in those cases where the domain dimension is large and the grid size is small, the number of parameters of the resulting canonical expression is, in general, very large. Accordingly, the propose of this paper is to present a method to reduce the number of parameters of a given PWL function based on the use of orthonormal bases of PWL functions [2].