Abstract
A novel method for online tracking of the changes in the nonlinearity within both real-domain and complex-valued signals is introduced. This is achieved by a collaborative adaptive signal processing approach based on a hybrid filter. By tracking the dynamics of the adaptive mixing parameter within the employed hybrid filtering architecture, we show that it is possible to quantify the degree of nonlinearity within both real- and complex-valued data. Implementations for tracking nonlinearity in general and then more specifically sparsity are illustrated on both benchmark and real world data. It is also shown that by combining the information obtained from hybrid filters of different natures it is possible to use this method to gain a more complete understanding of the nature of the nonlinearity within a signal. This also paves the way for building multidimensional feature spaces and their application in data/information fusion.
Original language | English |
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Pages (from-to) | 105-115 |
Number of pages | 11 |
Journal | Journal of Signal Processing Systems |
Volume | 61 |
Issue number | 1 |
DOIs | |
Publication status | Published - Oct 2010 |
Externally published | Yes |
Keywords
- Adaptive signal processing
- Collaborative signal processing
- Convex optimisation
- Distributed signal processing
- EEG modelling
- Hybrid filtering
- Machine learning
- Wind modelling
ASJC Scopus subject areas
- Control and Systems Engineering
- Theoretical Computer Science
- Signal Processing
- Information Systems
- Modelling and Simulation
- Hardware and Architecture