Efficient Synchronization for Nonuniform Communication Architectures

2002 ◽  
Author(s):  
Z. Radovic ◽  
E. Hagersten
Keyword(s):  
Communication Architectures

scholarly journals Quantum teleportation with imperfect quantum dots

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
F. Basso Basset ◽  
F. Salusti ◽  
L. Schweickert ◽  
M. B. Rota ◽  
D. Tedeschi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Teleportation ◽  
Bell State ◽  
Spectral Filtering ◽  
State Measurement ◽  
Communication Architectures ◽  
The One ◽  
Experimental Findings ◽  
Photon Source ◽  
Remarkable Progress

AbstractEfficient all-photonic quantum teleportation requires fast and deterministic sources of highly indistinguishable and entangled photons. Solid-state-based quantum emitters—notably semiconductor quantum dots—are a promising candidate for the role. However, despite the remarkable progress in nanofabrication, proof-of-concept demonstrations of quantum teleportation have highlighted that imperfections of the emitter still place a major roadblock in the way of applications. Here, rather than focusing on source optimization strategies, we deal with imperfections and study different teleportation protocols with the goal of identifying the one with maximal teleportation fidelity. Using a quantum dot with sub-par values of entanglement and photon indistinguishability, we show that the average teleportation fidelity can be raised from below the classical limit to 0.842(14), adopting a polarization-selective Bell state measurement and moderate spectral filtering. Our results, which are backed by a theoretical model that quantitatively explains the experimental findings, loosen the very stringent requirements set on the ideal entangled-photon source and highlight that imperfect quantum dots can still have a say in teleportation-based quantum communication architectures.

Evaluation of Communication Architectures for Switched Real-Time Ethernet

2014 ◽  
Vol 63 (1) ◽  
pp. 218-229 ◽  
Author(s):  
Gonzalo Carvajal ◽  
Chun Wah Wu ◽  
Sebastian Fischmeister
Keyword(s):  
Real Time ◽  
Communication Architectures

scholarly journals Inter-UAV Routing Scheme Testbeds

Drones ◽  
2020 ◽  
Vol 5 (1) ◽  
pp. 2
Author(s):  
Georgios Amponis ◽  
Thomas Lagkas ◽  
Panagiotis Sarigiannidis ◽  
Vasileios Vitsas ◽  
Panagiotis Fouliras
Keyword(s):  
Signal To Noise Ratio ◽  
Real Life ◽  
Simulation Software ◽  
Propagation Models ◽  
Routing Schemes ◽  
Routing Scheme ◽  
Related Information ◽  
Efficient Control ◽  
Communication Architectures ◽  
Scheme Evaluation

With the development of more advanced and efficient control algorithms and communication architectures, UAVs and networks thereof (swarms) now find applications in nearly all possible environments and scenarios. There exist numerous schemes which accommodate routing for such networks, many of which are specifically designed for distinct use-cases. Validation and evaluation of routing schemes is implemented for the most part using simulation software. This approach is however incapable of considering real-life noise, radio propagation models, channel bit error rate and signal-to-noise ratio. Most importantly, existing frameworks or simulation software cannot sense physical-layer related information regarding power consumption which an increasing number of routing protocols utilize as a metric. The work presented in this paper contributes to the analysis of already existing routing scheme evaluation frameworks and testbeds and proposes an efficient, universal and standardized hardware testbed. Additionally, three interface modes aimed at evaluation under different scenarios are provided.

scholarly journals A Method for Routing Packets Across Multiple Paths in NoCs with In-Order Delivery and Fault-Tolerance Gaurantees

VLSI Design ◽  
2007 ◽  
Vol 2007 ◽  
pp. 1-11 ◽  
Author(s):  
Srinivasan Murali ◽  
David Atienza ◽  
Luca Benini ◽  
Giovanni De Micheli
Keyword(s):  
Power Consumption ◽  
Network Performance ◽  
Multipath Routing ◽  
Experimental Studies ◽  
Packet Delivery ◽  
Network Bandwidth ◽  
Routing Strategy ◽  
Communication Architectures ◽  
Multiple Paths ◽  
Single Path

Networks on Chips (NoCs) are required to tackle the increasing delay and poor scalability issues of bus-based communication architectures. Many of today's NoC designs are based on single path routing. By utilizing multiple paths for routing, congestion in the network is reduced significantly, which translates to improved network performance or reduced network bandwidth requirements and power consumption. Multiple paths can also be utilized to achieve spatial redundancy, which helps in achieving tolerance against faults or errors in the NoC. A major problem with multipath routing is that packets can reach the destination in an out-of-order fashion, while many applications require in-order packet delivery. In this work, we present a multipath routing strategy that guarantees in-order packet delivery for NoCs. It is based on the idea of routing packets on partially nonintersecting paths and rebuilding packet order at path reconvergent nodes. We present a design methodology that uses the routing strategy to optimally spread the traffic in the NoC to minimize the network bandwidth needs and power consumption. We also integrate support for tolerance against transient and permanent failures in the NoC links in the methodology by utilizing spatial and temporal redundancy for transporting packets. Our experimental studies show large reduction in network bandwidth requirements (36.86% on average) and power consumption (30.51% on average) compared to single-path systems. The area overhead of the proposed scheme is small (a modest 5% increase in network area). Hence, it is practical to be used in the on-chip domain.

scholarly journals TRUST MANAGEMENT OF COMMUNICATION ARCHITECTURES OF INTERNET OF THINGS

2019 ◽  
Vol 2019 (02) ◽  
pp. 121-130 ◽  
Author(s):  
Dr. Wang Haoxiang
Keyword(s):  
Internet Of Things ◽  
Information Exchange ◽  
Trust Management ◽  
The Internet ◽  
Trust System ◽  
Proposed Model ◽  
Communication Architectures ◽  
Block Chain ◽  
Seamless Connection ◽  
The Internet Of Things

The Internet of things is the basic paradigm with the cluster of techniques that ensure innovations in the service rendered in various applications. It aims to develop a seamless connection between the tangible objects around and the information network in turn to provide a well-structured servicing to its users. Though the IOT service seems to be promising, the risks still prevail in the form of privacy and the security in user acceptance in utilizing the internet of things services, and its application. This makes the trust management very important for the internet of things. So the paper puts forth the distributed block chain involved trust system to manage the conveyance infrastructures of the internet of things paradigm. The evaluation of the proposed model evinces the enhanced security provided for the nodes of the IOT as well as its information exchange.

scholarly journals Highly scalable intelligent sensory application and time domain matrix for safety-critical system design

2018 ◽  
Vol 14 (4) ◽  
pp. 155014771774110
Author(s):  
Taikyeong Ted Jeong
Keyword(s):  
Fault Detection ◽  
Detection Algorithm ◽  
Network Interface ◽  
Critical System ◽  
Communication Architecture ◽  
Interface Card ◽  
Safety Critical ◽  
Verification Methods ◽  
Communication Architectures ◽  
And Performance

The designs of highly scalable intelligent sensory application—Ethernet-based communication architectures—are moving toward the integration of a fault recovery and fault-detection algorithm on the automotive industry. In particular, each port on the same network interface card design is required to provide highly scalable and low-latency communication. In this article, we present a study of intelligent sensory application for the Ethernet-based communication architecture and performance of multi-port configuration which is mainly used in safety-enhanced application such as automotive, military, finance, and aerospace, in other words, safety-critical applications. Our contributions and observations on the highly scalable intelligent behavior: (1) proposed network interface card board design scheme and architecture with multi-port configuration are a stable network configuration; (2) timing matrix is defined for fault detection and recovery time; (3) experimental and related verification methods by cyclic redundancy check between client–server and testing platform provide comparable results to each port configurations; and (4) application program interface–level algorithm is defined to make network interface card ready for fault detection.

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