The Experts below are selected from a list of 70545 Experts worldwide ranked by ideXlab platform

Seung H. Hong - One of the best experts on this subject based on the ideXlab platform.

  • implementation of a knx zigbee gateway for home automation
    International Symposium on Consumer Electronics, 2009
    Co-Authors: Woo Suk Lee, Seung H. Hong
    Abstract:

    The demand for wireless technology in home automation Systems has recently been increasing due to several advantages such as installation cost reduction, easy placement, easy extension, aesthetic benefits, and mobile device connectivity. Among the many wireless technologies available, ZigBee is one of the most useful for home automation. A wireless home Networking System can be configured using ZigBee alone. However, compatibility with conventional Networking Systems based on wired media is not supported. KNX is a mature protocol for wired media and is recognized as an international standard. In this paper, a KNX-ZigBee gateway is proposed for interfacing between KNX and ZigBee Systems, thereby enabling the integration of wired and wireless home automation Systems.

  • KNX - zigbee gateway for home automation
    4th IEEE Conference on Automation Science and Engineering CASE 2008, 2008
    Co-Authors: Woo Suk Lee, Seung H. Hong
    Abstract:

    The demand for wireless technology in home automation Systems has recently been increasing due to several advantages such as installation cost reduction, easy placement, easy extension, aesthetic benefits, and mobile device connectivity. Among the many wireless technologies, ZigBee is one of the most useful for home automation; a wireless home Networking System can be configured using ZigBee alone. Compatibility with conventional home Networking Systems that are based on wired media, however, is not supported. KNX is a mature protocol for wired media that is recognized as an international standard. This paper proposes a KNX-ZigBee gateway to interface between KNX and ZigBee Systems and thereby enable integration of wired and wireless home automation Systems.

Woo Suk Lee - One of the best experts on this subject based on the ideXlab platform.

  • implementation of a knx zigbee gateway for home automation
    International Symposium on Consumer Electronics, 2009
    Co-Authors: Woo Suk Lee, Seung H. Hong
    Abstract:

    The demand for wireless technology in home automation Systems has recently been increasing due to several advantages such as installation cost reduction, easy placement, easy extension, aesthetic benefits, and mobile device connectivity. Among the many wireless technologies available, ZigBee is one of the most useful for home automation. A wireless home Networking System can be configured using ZigBee alone. However, compatibility with conventional Networking Systems based on wired media is not supported. KNX is a mature protocol for wired media and is recognized as an international standard. In this paper, a KNX-ZigBee gateway is proposed for interfacing between KNX and ZigBee Systems, thereby enabling the integration of wired and wireless home automation Systems.

  • KNX - zigbee gateway for home automation
    4th IEEE Conference on Automation Science and Engineering CASE 2008, 2008
    Co-Authors: Woo Suk Lee, Seung H. Hong
    Abstract:

    The demand for wireless technology in home automation Systems has recently been increasing due to several advantages such as installation cost reduction, easy placement, easy extension, aesthetic benefits, and mobile device connectivity. Among the many wireless technologies, ZigBee is one of the most useful for home automation; a wireless home Networking System can be configured using ZigBee alone. Compatibility with conventional home Networking Systems that are based on wired media, however, is not supported. KNX is a mature protocol for wired media that is recognized as an international standard. This paper proposes a KNX-ZigBee gateway to interface between KNX and ZigBee Systems and thereby enable integration of wired and wireless home automation Systems.

M Dobbs - One of the best experts on this subject based on the ideXlab platform.

  • ice a scalable low cost fpga based telescope signal processing and Networking System
    Journal of Astronomical Instrumentation, 2016
    Co-Authors: Kevin Bandura, A N Bender, J F Cliche, T De Haan, M Dobbs
    Abstract:

    We present an overview of the ‘ICE’ hardware and software framework that implements large arrays of interconnected field-programmable gate array (FPGA)-based data acquisition, signal processing and Networking nodes economically. The System was conceived for application to radio, millimeter and sub-millimeter telescope readout Systems that have requirements beyond typical off-the-shelf processing Systems, such as careful control of interference signals produced by the digital electronics, and clocking of all elements in the System from a single precise observatory-derived oscillator. A new generation of telescopes operating at these frequency bands and designed with a vastly increased emphasis on digital signal processing to support their detector multiplexing technology or high-bandwidth correlators — data rates exceeding a terabyte per second — are becoming common. The ICE System is built around a custom FPGA motherboard that makes use of an Xilinx Kintex-7 FPGA and ARM-based co-processor. The System is ...

  • ice a scalable low cost fpga based telescope signal processing and Networking System
    arXiv: Instrumentation and Methods for Astrophysics, 2016
    Co-Authors: Kevin Bandura, A N Bender, J F Cliche, T De Haan, M Dobbs
    Abstract:

    We present an overview of the 'ICE' hardware and software framework that implements large arrays of interconnected FPGA-based data acquisition, signal processing and Networking nodes economically. The System was conceived for application to radio, millimeter and sub-millimeter telescope readout Systems that have requirements beyond typical off-the-shelf processing Systems, such as careful control of interference signals produced by the digital electronics, and clocking of all elements in the System from a single precise observatory-derived oscillator. A new generation of telescopes operating at these frequency bands and designed with a vastly increased emphasis on digital signal processing to support their detector multiplexing technology or high-bandwidth correlators---data rates exceeding a terabyte per second---are becoming common. The ICE System is built around a custom FPGA motherboard that makes use of an Xilinx Kintex-7 FPGA and ARM-based co-processor. The System is specialized for specific applications through software, firmware, and custom mezzanine daughter boards that interface to the FPGA through the industry-standard FMC specifications. For high density applications, the motherboards are packaged in 16-slot crates with ICE backplanes that implement a low-cost passive full-mesh network between the motherboards in a crate, allow high bandwidth interconnection between crates, and enable data offload to a computer cluster. A Python-based control software library automatically detects and operates the hardware in the array. Examples of specific telescope applications of the ICE framework are presented, namely the frequency-multiplexed bolometer readout Systems used for the SPT and Simons Array and the digitizer, F-engine, and Networking engine for the CHIME and HIRAX radio interferometers.

Vishal Anand - One of the best experts on this subject based on the ideXlab platform.

  • regional failure resilient virtual infrastructure mapping in a federated computing and Networking System
    IEEE\ OSA Journal of Optical Communications and Networking, 2014
    Co-Authors: Chunming Qiao, Jianping Wang, Vishal Anand
    Abstract:

    Network-wide virtualization is a promising technique that will enable future Internet to support a variety of network services and architectures over a shared optical network substrate. In network-wide virtualization, it is important to efficiently map a virtual infrastructure (VI) over a wide-area optical network and guarantee the survivability of such a VI against failures. In this paper, we study the regional failure-resilient VI mapping (RRVIM) problem, where a failure-dependent protection approach is used to enable efficient sharing of protection resources among different regional failure scenarios. We first formulate the minimum-cost RRVIM problem using mixed integer linear programming (MILP) and then propose four heuristic algorithms to solve the problem. The efficiency of the MILP and the heuristics is compared via extensive simulation experiments under various performance metrics.

  • survivable virtual infrastructure mapping in a federated computing and Networking System under single regional failures
    Global Communications Conference, 2010
    Co-Authors: Chunming Qiao, Vishal Anand, Xin Liu, Gang Sun
    Abstract:

    As virtualization becomes more and more popular, how to guarantee survivability of a virtual infrastructure (VI) over a wide-area optical network is increasingly important. In this paper, we approach the problem of survivable VI mapping (SVIM) from a few unique perspectives. One of the most distinguishing perspectives is that a large-scale regional failure could destroy one or more facility nodes to which some VI nodes are mapped. Accordingly, redundant facility nodes at different geographical locations and redundant optical connections have to be provisioned such that the VI can still be mapped after the failure. Another distinguishing perspective is that with failure-dependent protection, the SVIM problem can be decomposed into several instances of the basic non-survivable VI mapping (NSVIM) problem, whose solution permits effective sharing of the redundant resources among all failures. In this paper, we first formulate the minimum-cost SVIM problem using mixed integer linear programming (MILP). We then propose an efficient heuristic solution to NSVIM, based on which two novel heuristic SVIM algorithms called Separate Optimization with Unconstrained Mapping (SOUM) and Incremental Optimization with Constrained Mapping (IOCM). Simulations are performed to study and compare the performance of the MILP and heuristics.

Dong Xuan - One of the best experts on this subject based on the ideXlab platform.

  • e shadow lubricating social interaction using mobile phones
    IEEE Transactions on Computers, 2014
    Co-Authors: Jin Teng, Boying Zhang, Xiaole Bai, Dong Xuan
    Abstract:

    In this paper, we propose E-Shadow, a distributed mobile phone-based local social Networking System. E-Shadow has two main components: (1) Local profiles. They enable E-Shadow users to record and share their names, interests, and other information with fine-grained privacy controls. (2) Mobile phone based local social interaction tools. E-Shadow provides mobile phone software that enables rich social interactions. The software maps proximate users’ local profiles to their human owners and enables user communication and content sharing. We have designed and implemented E-Shadow on mobile phones. In our E-Shadow System, we allow users to perform dynamic and layered information publishing, making use of interpersonal relevance in space and time. Our System also provides a mechanism to help users perform direction-driven localization of an E-Shadow and match it with its owner. Experiments on real world Windows Mobile phones and large-scale simulations show that our System disseminates information efficiently and helps receivers find the direction of a specific E-Shadow with accuracy. We believe our E-Shadow concept and System can lead to a more tightly-knit temporary community in one’s physical vicinity.

  • e shadow lubricating social interaction using mobile phones
    International Conference on Distributed Computing Systems, 2011
    Co-Authors: Jin Teng, Boying Zhang, Xiaole Bai, Dong Xuan
    Abstract:

    In this paper, we propose E-Shadow, a distributed mobile phone-based local social Networking System. E-Shadow has two main components: (1) Local profiles. They enable EShadow users to record and share their names, interests, and other information with fine-grained privacy controls. (2) Mobile phone based local social interaction tools. E-Shadow provides mobile phone software that enables rich social interactions. The software maps proximate users' local profiles to their human owners and enables user communication and content sharing. We have designed and implemented E-Shadow on mobile phones. In our E-Shadow System, we allow users to perform dynamic and layered information publishing, making use of interpersonal relevance. Our System also provides a mechanism to help users perform direction-driven localization of an E-Shadow and match it with its owner. Experiments on real world Windows Mobile phones and large-scale simulations show that our System disseminates information efficiently and helps receivers find the direction of a specific E-Shadow with accuracy. We believe our E-Shadow concept and System can lead to a more tightly-knit temporary community in one's physical vicinity.