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With the recent roll-out of 100 Gbit Ethernet technology for high-performance computing applications and the technology for 100 Gbit wireless communication emerging on the horizon, it is just a matter of time until non-high performance computing applications will have to utilize these data rates. Since 10 Gbit/s protocol processing is already challenging for current server machines and simply upscaling...
While High-Performance Computing is ever more pervasive and effective, computing capability is currently only a small fraction of what is needed. Three fundamental issues limiting performance are computational efficiency, power density, and communication latency. All of these issues are being addressed through increased heterogeneity, but the last in particular by integrating communication into the...
In this paper, we consider the structure and main components of the digital radio receiving center in terms of reliability of hardware and software for digital signal processing. We talk about the methods of development, improvement and empowerment of testing tools and diagnostics hardware and software of the radio receiver center. The article presents the basic methods of testing and diagnostics...
We propose and evaluate RoCE (RDMA over Converged Ethernet) as a low-latency back-plane for horizontally scaled software router nodes. By exploring combinations of design choices in developing internal fabric for software routers, we select a set of parameters and packet I/O APIs that yield the lowest latency and highest throughput. Using the optimal settings derived, we measure and compare latency...
Safe navigation in non-familiar outdoor environments is a challenging activity for the blind and visually impaired (BVI) people. This work introduces a cloud-based outdoor assistive navigation system (COANS) for BVI people. The main goal of the system is to provide easy street navigation and help to make outdoor walk in non-familiar environment less stressful. Hardware part from the user-side includes...
People visiting a foreign city are often not comfortable with the public transport system. This paper describes a system designed help passengers not only to find a suitable route but also to identify the correct bus. Different ways for recognising buses are explained and examined for practicability in the city of Berlin. An actual test case for the best fitting scenario was created and tested in...
Energy consumption is a concern with mobile de-vices nowadays. Network interfaces are among the most power hungry components in these devices. In this paper, we describe the design and implementation of a client-centric protocol for energy efficiency. Inspired by earlier work, our protocol works by exploiting the TCP flow-control mechanism to shape incoming traffic into bursts in order to utilize...
Ambient Noise Imaging (ANI) has been an active area of research at the Acoustic Research Laboratory (ARL). The ARL under Tropical Marine Science Institute (TMSI) of National University of Singapore (NUS) had designed an ambient noise imaging array in 2003 and tested them in the field. To cater for a high data-rate of 1.6 Gbps, Fibre Channel Arbitrated Loop technology was employed. Although this arrangement...
While distance education is becoming increasingly popular, it suffers from the problem of a lack of real-time interactivity between the instructor and the students, as well as an absence of peer interaction between students. A technique used in face-to-face classrooms to improve student-teacher interaction and promote peer discussion among students is the use of clickers, or student response systems...
Cluster-based storage systems increasingly use commodity communication technologies, such as Fibre Channel over Ethernet (FCoE), for accessing stored data over the network. Data is striped over multiple storage nodes, and storage traffic often shares the network with non-storage traffic. In such conditions, storage clients can experience severely degraded performance, such as TCP throughput collapse...
AUTOSAR(AUTomotiveOpen System ARchitecture) is an open and standardized automotive software architecture, jointly developed by automobile manufacturers, suppliers and tool developers. The AUTOSAR standard will serve as a platform upon which future vehicle applications will be implemented and will also serve to minimize the current barriers between functional domains. To improve cost-efficiency and...
With the rapid growth of automotive electronics, the application requirements increase greatly, the hardware abounds continuously, as a result, software system becomes more and more complex. For this reason, some major OEMs found Automotive Open System Architecture (AUTOSAR), now including a large number of automotive, electronics, semiconductor and software companies. AUTOSAR's objectives are to...
The current Virtual Machine (VM) live migration research mainly focuses on transferring run-time memory state of VMs, but neglects the network state. This paper designs an Efficient and Reliable VIrtual Network (ERVIN) system, which applies several techniques: Central Information management Distributed Data transmission (CIDD), layer-two network virtualization, store and replay. It guarantees that...
There is a long line of research on measuring the quality of service (QoS) path characteristics of the Internet, such as available bandwidth, path capacity, packets reordering, delay and jitter. Most of the measurement techniques are based on active probing using pairs or trains of packets. The packets are either transmitted back-to-back or at a desired spacing (e.g., to achieve a certain rate). In...
This contribution presents the design and implementation of a SNTP client module suitable for IEC 61850 environments fully done in hardware. The module is able to provide synchronization and accurate time reference within a microsecond with respect to a SNTP server, in a extremely compact, cost-effective and low power device completely implemented in a low grade FPGA chip. Therefore it can be an ideal...
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