The Experts below are selected from a list of 1992 Experts worldwide ranked by ideXlab platform

Masao Nakagawa - One of the best experts on this subject based on the ideXlab platform.

  • adaptive equalization system for visible light wireless communication utilizing multiple white led Lighting Equipment
    IEEE Transactions on Wireless Communications, 2009
    Co-Authors: Toshihiko Komine, Jun Hwan Lee, Shinichiro Haruyama, Masao Nakagawa
    Abstract:

    White LEDs were invented the 1990's. Since then they have been extensively researched and applied in various ways. Compared with conventional Lighting devices, the white LED has lower power consumption, lower voltage requirements, longer lifetime, smaller size, faster response, and cooler operation. The white LED will eventually replace incandescent or fluorescent lights in offices and homes. We have proposed an indoor visible light wireless communication system that utilizes multiple white LED Lighting Equipment. In this system, the Equipment is used not only for illuminating rooms but also for an optical wireless communication system. The system has significantly higher power levels than infrared wireless communication systems, since it also functions as the main Lighting Equipment. One problem is we tend to install many Lighting sources on a ceiling in order to illuminate the room as evenly as possible. While the number of sources permits site diversity transmission over LOS links, the optical path difference between the multiple sources triggers intersymbol interference (ISI), which significantly degrades system performance. This paper overcomes the ISI problem by proposing an adaptive equalization system. We elucidate the most effective training sequence interval for channel estimation in a mobile environment. And we show that the adaptive equalization system with the effectual interval alleviates the influence of shadowing.

Gravitate Super Admin - One of the best experts on this subject based on the ideXlab platform.

Michael J Flannagan - One of the best experts on this subject based on the ideXlab platform.

  • real world frequency of use of automotive Lighting Equipment
    Leukos, 2008
    Co-Authors: Mary Lynn Buonarosa, James R Sayer, Michael J Flannagan
    Abstract:

    AbstractThis study provides information about average annual use of the following automotive Lighting Equipment by U.S. drivers: low- and high-beam headlamps, turn signals, and stop, back-up, parking, sidemarker, and tail lamps. The data were collected as part of a naturalistic field study of crash warning systems. Eighty-seven randomly selected drivers from southeastern Michigan were provided with instrumented research vehicles (11 identical 2003 Nissan Altimas) for periods averaging 26 days and instructed to drive the vehicles as their personal vehicles.The results are presented for each lamp type in terms of the average annual hours of use and minutes used per 100 km driven. These findings are discussed in relation to the rated life of various lamps and the average life of vehicles in the U.S.License plate, parking, sidemarker, and tail lamps were the most frequently used automotive Lighting Equipment, averaging just over 100 hours per year. The least used lamps were back-up lamps, which were used less...

  • Real-world frequency of use of Lighting Equipment
    2008
    Co-Authors: James R Sayer, Mary Lynn Buonarosa, Michael J Flannagan
    Abstract:

    This study provides information about average annual use of the following automotive Lighting Equipment by U.S. drivers: low- and high-beam headlamps, turn signals, back-up, license plate, parking, sidemarker, stop, and tail lamps. The data were collected as part of a naturalistic field study of crash warning systems. Eighty-seven randomly selected drivers from southeastern Michigan were provided with instrumented research vehicles (11 identical 2003 Nissan Altimas) for periods averaging 26 days and instructed to drive the research vehicle in place of their personal vehicle. The results are presented for each lamp type in terms of the average annual hours of use and minutes used per 100 km driven. These findings are discussed in relation to the rated life of various bulbs and the median life of vehicles in the U.S.

Toshihiko Komine - One of the best experts on this subject based on the ideXlab platform.

  • adaptive equalization system for visible light wireless communication utilizing multiple white led Lighting Equipment
    IEEE Transactions on Wireless Communications, 2009
    Co-Authors: Toshihiko Komine, Jun Hwan Lee, Shinichiro Haruyama, Masao Nakagawa
    Abstract:

    White LEDs were invented the 1990's. Since then they have been extensively researched and applied in various ways. Compared with conventional Lighting devices, the white LED has lower power consumption, lower voltage requirements, longer lifetime, smaller size, faster response, and cooler operation. The white LED will eventually replace incandescent or fluorescent lights in offices and homes. We have proposed an indoor visible light wireless communication system that utilizes multiple white LED Lighting Equipment. In this system, the Equipment is used not only for illuminating rooms but also for an optical wireless communication system. The system has significantly higher power levels than infrared wireless communication systems, since it also functions as the main Lighting Equipment. One problem is we tend to install many Lighting sources on a ceiling in order to illuminate the room as evenly as possible. While the number of sources permits site diversity transmission over LOS links, the optical path difference between the multiple sources triggers intersymbol interference (ISI), which significantly degrades system performance. This paper overcomes the ISI problem by proposing an adaptive equalization system. We elucidate the most effective training sequence interval for channel estimation in a mobile environment. And we show that the adaptive equalization system with the effectual interval alleviates the influence of shadowing.

Gregoris Mentzas - One of the best experts on this subject based on the ideXlab platform.

  • A Framework for Integrated Proactive Maintenance Decision Making and Supplier Selection
    2017
    Co-Authors: Alexandros Bousdekis, Nikos Papageorgiou, Babis Magoutas, Dimitris Apostolou, Gregoris Mentzas
    Abstract:

    The increasing use of sensors in manufacturing enterprises has led to the need for real-time data-driven information systems capable of processing huge amounts of data in order to provide meaningful insights about the actual and the predicted business performance. We propose a framework for real-time, event-driven proactive supplier selection driven by Condition Based Maintenance (CBM). The proposed framework was tested in a real in automotive Lighting Equipment scenario.

  • APMS (1) - A Framework for Integrated Proactive Maintenance Decision Making and Supplier Selection
    Advances in Production Management Systems. The Path to Intelligent Collaborative and Sustainable Manufacturing, 2017
    Co-Authors: Alexandros Bousdekis, Nikos Papageorgiou, Babis Magoutas, Dimitris Apostolou, Gregoris Mentzas
    Abstract:

    The increasing use of sensors in manufacturing enterprises has led to the need for real-time data-driven information systems capable of processing huge amounts of data in order to provide meaningful insights about the actual and the predicted business performance. We propose a framework for real-time, event-driven proactive supplier selection driven by Condition Based Maintenance (CBM). The proposed framework was tested in a real in automotive Lighting Equipment scenario.