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This paper proposes a method for monitoring the difference in the ionosphere between a GBAS ground station and an airborne user from single frequency L1/E1 corrections and single frequency L5/E5a corrections. The absolute ionospheric delay at the ground station cannot be estimated from the corrections only. Therefore, the monitored test statistic is the difference of an ionospheric delay estimate...
Scalable and automated monitoring processes for testing, debugging, and operation of VNFs and service-chains are crucial components towards achieving the aims of network softwarization - i.e., cheaper, faster, and shorter service deployment and network management processes. In this paper we present a decentralized monitoring approach aimed at supporting automated deployment and operation of VNFs and...
A new isolated Drive-by-Microwave (DBM) gate driver with a high-speed voltage monitoring for over current detection is proposed, which is composed of a 2.4GHz GaN/Si DBM transmitter, DBM receiver chip and compact isolated couplers in a low-cost printed circuit board. The fabricated DBM gate driver demonstrates a 200 Mbps isolated data transmission and a GaN power switching device's driving with a...
Reconfiguration plays a vital role in resource utilization. The functional, interconnect testing of digital circuits is done using Boundary Scan Trainer (BST) kit. The faulty cores if replaced by spare ones in real time reduce the switching time. This procedure is implemented in wireless network system also. The proposed work focuses on wireless communication among nodes, grouping them as different...
Wireless power transfer (WPT) based on magnetic resonant coupling is a novel technology by which non-radiative and mid-range power transfer can be realized via the near field. WPT inevitably leads to a small-scale regional network with a certain amount of transmitters, receivers and repeaters. There is a great lack of related analysis approaches because of its high-frequency and near-field features,...
In this paper we present a software demonstrator, for a system built following the directions described in the IEEE 802.21 (Media Independent Handover) standard, capable of completing an independent vertical handover. We first bring in front the field's related work, and also propose methods of implementing the components described in the standard. The architecture and the functionalities of the demonstrator...
In order to meet the demands of complicated calculation and high real-time performance, a new implementation of multi-mode GNSS signal simulator controlled by computer is proposed. Navigation control parameters are calculated by computers. Then, they are sent to satellite signal generator via network interface to control signal generation. This combination displays strong advantages of parallel processing...
This paper describes a methodology for building a reliable internet core router that considers the vulnerability of its electronic components to single event upset (SEU). It begins with a set of meaningful system level metrics that can be related to product reliability requirements. A specification is then defined that can be effectively used during the system architecture, silicon and software design...
<para> We report a mode-locked antimonide-based semiconductor disk laser operating at 2 m, synchronously pumped with a pulsed source incorporating a 1.57- m diode laser, a lithium niobate intensity modulator, and an erbium-doped fiber amplifier. The method for producing the pump signal utilizes commercially available telecom components and allows for convenient selection of the mode-locking...
Video-streaming can now be offered on third-generation (3G) mobile networks. Most research efforts have focused on video download. This paper presents a detailed study of challenges faced for successfully deploying applications requiring life video upload. Both subjective and objective qualities as well as the effects of mobility are analyzed on real 3G networks. Consequently, video profiles are identified...
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