Technical Program

Paper Detail

Session:Signal Reconstruction and Filter Design
Time:Tuesday, May 18, 14:40 - 15:00
Presentation: Lecture
Topic: Signal Processing Theory and Methods: System Modeling, Representation, & Identification
Authors: Miki Haseyama; Hokkaido University 
 Daiki Matsuura; Hokkaido University 
Abstract: A GA-based realization method of the optimal finite-precision system is proposed. The optimal realizations of the finite-precision systems are defined as those that minimize the error between the frequency characteristics of the original infinite-precision system and its finite-precision represented one and can be shown as the solutions of a nonlinear programming problem. Therefore, in this paper, GA-based optimization strategy is presented to provide an efficient method for solving this problem. The proposed realization method of the optimal finite-precision system is based on not only the GA but also an SA to prevent the GA from going into local minima. Some numerical examples and comparison simulations with the traditional quantization methods, such as rounding off, rounding up, and rounding down, and another SA-based method are given to verify the high performance of the proposed method.

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