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Institution

Philips

CompanyVantaa, Finland
About: Philips is a company organization based out in Vantaa, Finland. It is known for research contribution in the topics: Signal & Layer (electronics). The organization has 68260 authors who have published 99663 publications receiving 1882329 citations. The organization is also known as: Koninklijke Philips Electronics N.V. & Royal Philips Electronics.


Papers
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Proceedings ArticleDOI
11 Jun 2001
TL;DR: It is claimed that link adaptation, which performs both dynamic fragmentation and PHY rate selection depending on the wireless channel condition between the transmitter and receiver, is an attractive way to improve the goodput performance of an IEEE 802.11a wireless LAN.
Abstract: IEEE 802.11a is a new high-speed physical layer (PHY) defined for the 5 GHz U-NII bands as a supplement to the existing IEEE 802.11 wireless LAN (WLAN) standard. We give an overview of the IEEE 802.11a orthogonal frequency domain multiplexing (OFDM) PHY with eight different PHY rates as well as the distributed coordination function (DCF) of the IEEE 802.11 MAC, then derive the goodput performance analytically for peer-to-peer communication under the DCF. Based on the numerical results, we claim that link adaptation, which performs both dynamic fragmentation and PHY rate selection depending on the wireless channel condition between the transmitter and receiver, is an attractive way to improve the goodput performance of an IEEE 802.11a wireless LAN. Finally, we propose a system architecture to perform link adaptation.

243 citations

Patent
22 Oct 2013
TL;DR: In this article, a lighting unit consisting of a blue light, a green light, and a red light was proposed, which was configured to provide red light with a broad band spectral light distribution.
Abstract: The invention provides a lighting unit comprising a source of blue light, a source of green light, a first source of red light comprising a first red luminescent material, configured to provide red light with a broad band spectral light distribution, and a second source of red light comprising a second red luminescent material, configured to provide red light with a spectral light distribution comprising one or more red emission lines. Especially, the first red luminescent material comprises (Mg,Ca,Sr)AlSiN 3 :Eu and/or (Ba,Sr,Ca) 2 Si 5 - x Al x O x N 8-x :Eu, and the second red luminescent material comprises K 2 SiF 6 :Mn.

242 citations

Patent
08 Dec 1999
TL;DR: In this article, a liquid confinement structure is used to support the projection of a patterned beam from a projection system to a substrate table, and a second inlet is formed in a face of the structure.
Abstract: A lithographic projection apparatus includes a liquid confinement structure extending along at least a part of a boundary of a space between a projection system and a substrate table. The liquid confinement structure is positioned adjacent a final surface of the projection system and includes a first inlet configured to supply a liquid, through which a patterned beam is to be projected, to the space, and a second inlet configured to supply gas and formed in a face of the structure. The face is arranged to oppose a surface of the substrate and the second inlet is located radially outward, with respect to an optical axis of the projection system, of the space and has a porous member to evenly distribute gas flow over an area of the second inlet.

242 citations

Journal ArticleDOI
P. Delsarte1, Y. Genin1
TL;DR: The classical Levinson algorithm for computing the predictor polynomial relative to a real positive definite Toeplitz matrix is shown to be redundant in complexity and can be broken down into two simpler algorithms, either of which needs only to be processed.
Abstract: The classical Levinson algorithm for computing the predictor polynomial relative to a real positive definite Toeplitz matrix is shown to be redundant in complexity. It can be broken down into two simpler algorithms, either of which needs only to be processed. This result can be interpreted in the framework of the theory of orthogonal polynomials on the real line as follows: the symmetric and antisymmetric parts of the predictors relative to the sequence of Toeplitz matrices constitute two families of polynomials orthogonal on the interval [- 1,1] with respect to some even weight functions. It turns out that the recurrence relations for these orthogonal polynomials can be used efficiently to compute the desired predictor. The resulting "split Levinson algorithm" requires roughly one-half the number of multiplications and the same number of additions as the classical Levinson algorithm. A simple derivation of Cybenko's method for computing the Pisarenko frequencies is obtained from the recurrence relations underlying the split Levinson algorithm.

242 citations

Proceedings ArticleDOI
30 Mar 1998
TL;DR: This paper presents a low-power asynchronous implementation of the 80C51 microcontroller, realized in a 0.5 /spl mu/ CMOS process and it shows a power advantage of a factor 4 compared to a recent synchronous implementation in the same technology.
Abstract: This paper presents a low-power asynchronous implementation of the 80C51 microcontroller. It was realized in a 0.5 /spl mu/ CMOS process and it shows a power advantage of a factor 4 compared to a recent synchronous implementation in the same technology. The chip is fully bit compatible with the synchronous implementation, and timing compatible for external memory access. The circuit is a compiled VLSI-program, using Tangram as VLSI-programming language and the Tangram tool-set to compile the design automatically to a standard-cell netlist. This design approach proves to be powerful enough to describe the microcontroller and derive an efficient implementation. Further, it offers the designer the possibility to explore various alternatives in the design space.

242 citations


Authors

Showing all 68268 results

NameH-indexPapersCitations
Mark Raymond Adams1471187135038
Dario R. Alessi13635474753
Mohammad Khaja Nazeeruddin12964685630
Sanjay Kumar120205282620
Mark W. Dewhirst11679757525
Carl G. Figdor11656652145
Mathias Fink11690051759
David B. Solit11446952340
Giulio Tononi11451158519
Jie Wu112153756708
Claire M. Fraser10835276292
Michael F. Berger10754052426
Nikolaus Schultz106297120240
Rolf Müller10490550027
Warren J. Manning10260638781
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20235
202239
2021898
20201,428
20191,665
20181,378