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| Paper: | SPTM-P9.4 |
| Session: | Nonlinear Systems and Signal Processing |
| Time: | Thursday, May 20, 13:00 - 15:00 |
| Presentation: |
Poster |
| Topic: |
Signal Processing Theory and Methods: Nonlinear Systems and Signal Processing |
| Title: |
COMPARISON OF DISCRETE-TIME APPROXIMATIONS FOR CONTINUOUS-TIME NONLINEAR SYSTEMS |
| Authors: |
Heinz Koeppl; Graz University of Technology | | |
| | David Schwingshackl; Infineon Technologies AG | | |
| Abstract: |
The work addresses the problem of approximating the sampled input-output (i/o) behavior ofcontinuous-time nonlinear systems using discrete-time Volterra models.For an exactly band-limited nonlinear system for which a Volterrarepresentation exists, the discrete-time Volterra model exactly corresponds to the sampledcontinuous-time Volterra kernels. Physical systems, as they are causal, arenever exactly band-limited. Thus, a modeling error is introduced.By relaxing the causality condition and allowinga small processing delay, it is shown through simulation that moreaccurate discrete-time Volterra models compared to sampled continuous-timeVolterra models can be generated. |
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