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13 May 2002
TL;DR: An Extended Kalman Filter, EKF and a Recursive Prediction Error Method, RPEM based on a time-varying nonlinear Hammerstein model are proposed and can be applied to the problem of acoustic echo cancelation.
Abstract: An Extended Kalman Filter, EKF and a Recursive Prediction Error Method, RPEM based on a time-varying nonlinear Hammerstein model are proposed. These algorithms can be applied to the problem of acoustic echo cancelation. The performance of the suggested methods is compared to time-varying Cramer-Rao lower bounds, CRB's which are also derived.
01 Jan 2016
TL;DR: In this article, the authors derived a technique by means of which the calculation of radiation from arbitrarily shaped aperture antennas can be greatly simplified compared to the conventional approach, where the null field region of an equivalence problem is typically filled with a conductor, effectively short-circuiting the aperture and the electric surface current density everywhere, then radiates in the presence of the conductor and the Green's function associated with each particular antenna configuration has to be derived.
Abstract: A technique is derived by means of which the calculation of radiation from arbitrarily shaped aperture antennas can be greatly simplified compared to the conventional approach. In the conventional approach the null field region of an equivalence problem is typically filled with a conductor, effectively short-circuiting the aperture and the electric surface current density everywhere. The remaining aperture magnetic surface current density, which is known, then radiates in the presence of the conductor and the Green’s function associated with each particular antenna configuration has to be derived, usually a very cumbersome process. In the proposed technique a conductor is again placed within S, but with an infinitesimal small distance between the conductor and S. The image of the electric current density on S is shown to be induced on the conductor and the free space radiation integrals can now be used to solve the radiation problem. Examples are presented to prove the new technique and to demonstrate the mechanics of the equivalence principle when applied to aperture antenna problems.
06 Jun 2005
TL;DR: This paper presents an evaluation of parallel performance of a computational fluiddynamics solver on PC-clusters that uses unstructured grids and is parallelized bydomain decomposition using domain decomposition.
Abstract: This paper presents an evaluation of parallel performance of a computational fluiddynamics solver on PC-clusters. The solver uses unstructured grids and is parallelized bydomain decomposition using ...
TL;DR: In this paper, the triboelectric current noise spectral density is evaluated for shielded cables in body-borne wired network subjected to mechanical stresses. And the efficiency of the methodology is demonstrated by measuring the current noise in two shielded cables subjected to bending.
Authors
Showing all 760 results
| Name | H-index | Papers | Citations |
|---|---|---|---|
| Christer Larsson | 64 | 272 | 12916 |
| Björn Johansson | 62 | 637 | 16030 |
| David C. Viano | 48 | 232 | 8283 |
| Thomas Schiex | 47 | 138 | 11031 |
| Robin Hanson | 28 | 114 | 3519 |
| Per Lötstedt | 28 | 109 | 2960 |
| Brigitte Mangin | 26 | 48 | 2652 |
| Lars Hanson | 19 | 117 | 1138 |
| Carl Gustafson | 17 | 34 | 1035 |
| Magnus Carlsson | 16 | 37 | 808 |
| Per-Johan Nordlund | 14 | 26 | 2738 |
| David Allouche | 14 | 26 | 680 |
| Mark A. Saab | 13 | 16 | 1153 |
| Andreas Gällström | 13 | 34 | 402 |
| Hans Hellsten | 12 | 37 | 549 |