The RAMP (Research Accelerator for Multiprocessors) project is developing infrastructure to support high-speed emulation of large scale, massively parallel multiprocessor systems using FPGA platforms. In this paper, we describe our proposal for a RAMP Design Framework (RDF), which has a number of challenging goals. The framework must support both cycle-accurate emulation of detailed parameteriz...

This paper describes the implementation of a real-time UMTS demonstrator developed within the framework of the IST ARROWS (Advanced Radio Resource Management On Wireless Services) project. Among the main goals of the ARROWS demonstrator are the evaluation of radio resource management strategies in a UMTS network and the analysis of the impact that these strategies have on the end-to-end behavio...

In this paper we present a methodology for the evaluation of networked systems communicating using WLAN technology. We show a case study of goal-oriented cooperating robots, for which our approach is particularly useful. Developing robots is expensive; hence emulation can be employed in the first part of the development cycle to study robot software implementations in realistic conditions at a ...

Network emulators play an important role when researchers want to evaluate the performance of newly designed protocols or network mechanisms instead of deploying them in real networks, because network emulators can provide appropriate network situations, (for example, delay, bottleneck bandwidth and packet loss) needed for experiments through easy control ‘knobs’. In this paper, we have impleme...

Network security devices are becoming more sophisticated and so are the testing processes. Traditional network testbeds face challenges in terms of fidelity, scalability and complexity of security features. In this paper we propose a new methodology of testing security devices using network virtualization techniques, and present an integrated solution, including network emulation, test case spe...

Field-programmable gate arrays (FPGAs) are excellent devices for high-performance computing, system-on-chip realization, and rapid system prototyping. While FPGAs offer flexibility and performance, they continue to lag behind application specific integrated circuit (ASIC) performance and power consumption. As manufacturing technology improves and IC feature size decreases, FPGAs may further lag...

I demonstrate a source of bias in the common implementation of the dyadic event history model as applied to policy diffusion. This bias tends to severely overstate the extent to which policy changes depend on explicit emulation of other states rather than on a state’s internal characteristics. This happens because the standard implementation conflates policy emulation and policy adoption: since...

Network emulation brings together the strengths of network simulation (scalability, modeling flexibility) and real-world software prototypes (realistic analysis). Unfortunately network emulation fails if the simulation is not real-time capable, e.g., due to large scenarios or complex models. So far, this problem has generally been addressed by providing massive computing power to the simulation...

Emulation has been proposed as a preservation strategy for longevity of digital objects. An advantage of emulation is the relative platform independency. Emulation with a high degree of platform independency requires a Universal Virtual Computer (UVC), as described by Lorie. This paper describes the realization of the enhanced UVC developed for the National Library of the Netherlands. The prese...

This research proposes the use of hardware emulation for inverter plants for the first time. This results in a new low cost, safe and robust solution for teaching control strategies for power electronics inverter circuits, composed of a digital controller (DSP or FPGA) connected to the inverter “hardware emulation circuit”. The inverter dynamical behavior is emulated by cheap operational amplif...