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Institution

NEC

CompanyTokyo, Japan
About: NEC is a company organization based out in Tokyo, Japan. It is known for research contribution in the topics: Signal & Layer (electronics). The organization has 33269 authors who have published 57670 publications receiving 835952 citations. The organization is also known as: NEC Corporation & NEC Electronics Corporation.


Papers
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Patent
Yasuhiko Matsunaga1
29 Aug 2013
TL;DR: Disclosed is a communication system in which information about the number of active users in each cell can be shared between base stations as discussed by the authors, where a first base station transmits operation information on the first cell to the second base station through the inter-base-station interface.
Abstract: Disclosed is a communication system in which information about the number of active users in each cell can be shared between base stations A communication system according to the present exemplary embodiment includes a first base station controlling a first cell and a second base station connected to the first base station through an inter-base-station interface, wherein the first base station transmits operation information on the first cell to the second base station through the inter-base-station interface, wherein the operation information on the first cell includes information about a load on the first cell and information about the number of active users in the first cell

137 citations

Journal ArticleDOI
TL;DR: In this article, a straight single-line defect optical waveguide in photonic crystal slabs is designed by the finite difference time-domain method and fabricated into a silicon-on-insulator (SOI) wafer.
Abstract: Straight single-line defect optical waveguides in photonic crystal slabs are designed by the finite difference time-domain method and fabricated into a silicon-on-insulator (SOI) wafer. By employing an airbridge structure, clear light propagation for both polarizations is observed without any leakage along the waveguide. This experimental result is well explained by photonic bands of pure guided modes. Minimum propagation loss is estimated to be 11 dB/mm. This value is lower than that reported so far for three-line-defect waveguides with an SOI slab structure and almost comparable to that for an index confinement waveguide with a rectangular Si core. This propagation loss is dominated by the scattering loss by some irregularities. However, photonic crystal waveguides have the possibility of an essential lower scattering loss than in the index confinement waveguide because of the inhibition of radiation modes by the photonic bandgap.

137 citations

Journal ArticleDOI
Osamu Sugino1, Atsushi Oshiyama1
TL;DR: The obtained Jahn-Teller distortion, the electronic structures, and the hyperfine coupling tensors are in good agreement with experimental data, indicating the validity of the one-electron theory, contrary to the prevailing picture based on model calculations.
Abstract: We have performed large-scale total-energy electronic-structure calculations within the local-density approximation for the negatively charged vacancy in Si. The obtained Jahn-Teller distortion, the electronic structures, and the hyperfine coupling tensors are in good agreement with the experimental data available, indicating the validity of the one-electron theory, contrary to the prevailing picture based on model calculations.

136 citations

Patent
Tetsuya Kokubun1
21 Dec 2004
TL;DR: In this article, a method for providing the layout design of semiconductor integrated circuits that is capable of promoting the reduction of the circuit pattern area is provided, where hole patterns are disposed at the mesh point which is an intersecting point of mutually orthogonal virtual grid lines and another hole pattern is not disposed at adjacent mesh point that is the mostly closed mesh point having the hole pattern thereon.
Abstract: A method for providing the layout design of semiconductor integrated circuit that is capable of promoting the reduction of the circuit pattern area is provided. A hole pattern is disposed at the mesh point which is an intersecting point of mutually orthogonal virtual grid lines and another hole pattern is not disposed at the adjacent mesh point that is the mostly closed mesh point having the hole pattern thereon.

136 citations

Patent
21 Oct 1993
TL;DR: In this article, an interface housing which has a fiber spool to store slack in the fiber trunks and a card cage to interface the trunk mounted on the door of the housing is described.
Abstract: An interface housing which has a fiber spool to store slack in the fiber trunks and a card cage to interface the trunk mounted on the door of the housing. The door is hinged on one side of the housing so that, when the door swings open, the entire card cage and fiber spool are clear of the housing and readily accessible and releases the PCB lock. A ribbon connector connects the back plane of the card cage to an interface terminal board on the wall of the housing to which external wire-wrap and/or RJ48X connections may be made. Backup batteries in a tray are disposed along the bottom of the housing and secured in place with a cover. When the housing door swings shut, the fiber optic spool fits in front of back-up batteries in the tray and the card cage fits over the batteries.

136 citations


Authors

Showing all 33297 results

NameH-indexPapersCitations
Pulickel M. Ajayan1761223136241
Xiaodong Wang1351573117552
S. Shankar Sastry12285886155
Sumio Iijima106633101834
Thomas W. Ebbesen9930570789
Kishor S. Trivedi9569836816
Sharad Malik9561537258
Shigeo Ohno9130328104
Adrian Perrig8937453367
Jan M. Rabaey8152536523
C. Lee Giles8053625636
Edward A. Lee7846234620
Otto Zhou7432218968
Katsumi Kaneko7458128619
Guido Groeseneken73107426977
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20238
202220
2021234
2020518
2019952
20181,088