This paper addresses the problem of fault-tolerant mul-ticast routing in wormhole-routed multicomputers. We present a new pseudo-Hamiltonian path-based routing methodology for constructing deadlock-free multicast routing algorithms requiring no virtual channels. This technique is applied to construct the rst fault-tolerant multicast routing algorithm for the mesh that requires no virtual channe...

This paper reports on an ongoing project’s research on the utilization of virtual reality (VR) technologies in a fully immersive 360° laser projection system, the Elbe Dom, to support the analysis of barley grain development. Three-dimensional barley grain models transferred into a virtual environment enable technical staff to collaboratively explore biological datasets and thus obtain accurate...

We present an overview of some principles of synthetic vision and audition for digital autonomous actors in virtual worlds. After a short review of the state-of-the-art we focus on some aspects of synthetic vision and virtual world constraints. Then, we present a simple real time structured sound renderer. This sound renderer is used as audition channel for synthetic and real actors and synchro...

10 n asynchronous transfer mode (ATM) networks, multiplexing and switching are performed on 53-byte cells which are transported across the network on virtual channel connections (VCCs) [1]. A virtual path connection (VPC) is a labeled path which can be used to transport, process, and manage a bundle of VCCs. Two levels of cell forwarding are defined: virtual path (VP) and virtual channel (VC), ...

In this contribution two new closed loop transmission schemes over wireless MIMO channels with only partial channel knowledge at the transmitter are presented. Utilizing Space Time Block Codes (STBCs) with additional preand post signal processing provides nT independent virtual channels, where nT is the number of transmit antennas. In most cases we consider nT = 4. The first scheme is based on ...

This paper proposes DAMQSV and DAMQS algorithms for systems on chip applications that require an interconnection network. The proposed schemes are based on a DAMQ buffer hardware design. DAMQSV and DAMQS are excellent schemes to optimize buffer management providing a good throughput when the network has a larger load. They can utilize significantly less buffer space without sacrificing the netw...

We consider multicode and multirate transmission scenarios in a DS-CDMA system operating in an asynchronous fashion in a multipath environment. Oversampling w.r.t. the chip rate is applied to the cyclostationary received signal and multisensor reception is considered, leading to a linear multichannel model. Channels for different users are considered to be finite-impulse response (FIR) and of p...

A new approach to ow control in high speed communication network is proposed where the problem of ow control within a virtual circuit is modeled as a dynamic system with time delays and disturbances. In the proposed ow controller design, we apply: (1) a modiied Smith predictor to predict the backlog in each channel along a virtual circuit; (2) fuzzy CMAC neural networks to predict the time-vary...

Network-on-Chip (NoC) paradigm has been proposed as an alternative bus-based schemes to achieve high performance and scalability in System-on-Chip (SoC) design. Performance analysis and evaluation of on-chip interconnect architectures are widely considered. Time latency and throughput are two very critical parameters which play vital role to improve the system performance. In this work, these t...

Covert channels evade isolation mechanisms between multiple parties in the cloud. Especially cache covert channels allow the transmission of several hundred kilobits per second between unprivileged user programs in separate virtual machines. However, caches are small and shared and thus cache-based communication is susceptible to noise from any system activity and interrupts. The feasibility of...