| 1. |
- Scozzari, A., et al.
(author)
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The process from a redundant and general sensor concept : towards an optimal sensor strategy for the assessment of drinking water quality
- 2008
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In: IEEE Instrumentation and Measurement Technology Conference, IMTC 2008. - 9781424415403 ; , s. 836-841
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Conference paper (other academic/artistic)abstract
- The paper focuses on the assumption that a sensor system for personal use has the optimal employment if coherent with the human perception system and provides redundant information by complementing sensors. Therefore, we provide argument for this thesis by demonstrating two examples within the quality indication of drinking water; two different electronic tongue sensors with similar operational principles have been used for making security assessments of drinking water in different environments, from tap, raw water and bottle. ©2008 IEEE.
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| 2. |
- Wisell, David, et al.
(author)
-
Behavioral Power Amplifier Modeling Using the LASSO
- 2008
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In: 2008 IEEE INSTRUMENTATION AND MEASUREMENT TECHNOLOGY CONFERENCE. - 9781424415403 ; , s. 1864-1867, s. 1864-1867
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Conference paper (peer-reviewed)abstract
- In this paper we use regularization; in the form of the LASSO, as identification procedure in order to find the parameters of the parallel Hammerstein model for behavioral power amplifier modeling. It is shown that the LASSO chooses a subset of the parameters of the parallel Hammerstein model in a systematic way and thereby reduces the number of model parameters while maintaining the performance. The values of the parameters are also smaller than when the ordinary least-squares algorithm is used for the parameter extraction since the LASSO imposes a limit on the L1-norm of the parameters Thus, the problem with larger and sometimes very large, parameters that is often encountered in behavioral power amplifier modeling is avoided Experimental results from measurements on a power amplifier intended for the 3G WCDMA system is provided to support the theory.
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