Πλοήγηση ανά Θέμα "Optical communication"
Αποτελέσματα 1-20 από 26
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5G-XHaul: A Novel Wireless-Optical SDN Transport Network to Support Joint 5G Backhaul and Fronthaul Services
(2019)The increased carrier bandwidth and the number of antenna elements expected in 5G networks require a redesign of the traditional IP-based backhaul and CPRI-based fronthaul interfaces used in 4G networks. We envision future ... -
Block error rate performance of OOK freespace optical links over gamma-gamma turbulence channels with generalised nonzero boresight pointing errors
(2018)The authors consider a point-to-point optical wireless communication link with on-off keying (OOK) modulation scheme. The propagation is deteriorated by the joint effects of gamma-gamma atmospheric turbulence and misalignment ... -
Cascaded Composite Turbulence and Misalignment: Statistical Characterization and Applications to Reconfigurable Intelligent Surface-Empowered Wireless Systems
(2022)Reconfigurable intelligent surfaces (RISs) empowered high-frequency wireless systems are expected to become the supporting pillar for several reliability and data rate hungry applications. Such systems are, however, sensitive ... -
Collision-free distributed MAC protocol for passive optical intra-rack data center networks
(2022)In this paper, we present a distributed medium access control (MAC) protocol and a network architecture suitable for optical intra-rack data center networks (DCNs). The intra-rack communication is performed using passive ... -
CONTENT project: Considerations towards a cloud-based internetworking paradigm
(2013)Although cloud computing and the Software Defined Network (SDN) framework are fundamentally changing the way we think about network services, multi-domain and multitechnology problems are not sufficiently investigated. ... -
First demonstration of service-differentiated converged optical sub-wavelength and LTE/WiFi networks over GEANT
(2015)A converged optical-wireless testbed is formed integrating TSON sub-wavelength networking in UK and the NITOS wireless solution in Greece. End-to-end service provisioning and flow differentiation are demonstrated across ... -
FSO links with spatial diversity over strong atmospheric turbulence channels
(2008)Free-space optical (FSO) communication has received much attention in recent years as a cost-effective, license-free and wide-bandwidth access technique for high data rates applications. The performance of FSO communication, ... -
High-speed optical cache memory as single-level shared cache in chip-multiprocessor architectures
(2015)We present an optical bus-based Chip Multiprocessor architecture where the processing cores share an optical single-level cache unit. Physically, the optical cache is implemented externally in a separate chip located next ... -
i-WABA: An efficient wavelengths arrangement and bandwidth allocation WDMA protocol for passive optical intra-rack data center networks
(2022)In this article, we effectively handle the continuously growing traffic within data centers (DCs) and we focus on the intra-rack communication. We propose a passive optical intra-rack DC network (DCN) that uses a set of ... -
Illumination, data transmission, and energy harvesting: The threefold advantage of VLC
(2017)Visible light communication (VLC) is a promising technology that meets illumination and information transmission requirements in an indoor environment. Because light waves convey energy, a VLC link may exploit that fact ... -
Mixed THz/FSO Relaying Systems: Statistical Analysis and Performance Evaluation
(2022)In this paper, the performance of a mixed Terahertz/free-space optical (THz/FSO) wireless transmission system is studied, where the joint effects of channel fading and pointing errors are considered for both THz and FSO ... -
New results on turbulence modeling for free-space optical systems
(2010)In this paper, we propose a statistical channel model, named as Double-Weibull, to describe the irradiance fluctuations in moderate and strong turbulence for free-space optical (FSO) systems. The proposed stochastic model ... -
Optical control connectivity and access technique study for a software-defined intra-rack data center network
(2021)In this paper, we propose a software defined network (SDN) architecture suitable for optical intra-rack data center networks (DCNs). Thus in an optical DCN, we distinguish the intra-rack communication from the inter-rack ... -
Optical Control Connectivity and Access Technique Study for a Software-Defined Intra-Rack Data Center Network
(2021)In this paper, we propose a software defined network (SDN) architecture suitable for optical intra-rack data center networks (DCNs). Thus in an optical DCN, we distinguish the intra-rack communication from the inter-rack ... -
Optically-Enabled Bloom Filter Label Forwarding Using a Silicon Photonic Switching Matrix
(2017)Simplified forwarding schemes relying on Bloom filter (BF)-based labels emerge as a promising approach for coping with the substantial increase in lookup table memory requirements associated with the growing number of ... -
Optimal Trade-Off between Depth and Coverage for a Vertical UOWC Link
(2020)The optimal trade-off between coverage and depth for a vertical underwater optical wireless communication (UOWC) link is thoroughly investigated in this letter. In the scenario under consideration, the optical transmitter ... -
Outage Probability of a Multisensor Mixed UOWC-FSO Setup
(2019)The performance of a network consisting of several underwater sensors communicating with a terrestrial destination is studied for the first time in terms of the outage probability. In the scenario under consideration, K ... -
Performance of an Underwater Optical Wireless Link with a Randomly Placed or Moving Receiver
(2021)The current work investigates the outage probability of a vertical diffused line-of-sight underwater optical wireless communication link where a fixed transmitter at the sea surface communicates with a receiver floated ... -
Performance of free-space optical communications over a mixture composite irradiance channel
(2017)The performance of a typical free-space optical link using a recently proposed composite model for turbulence and pointing error effects is studied. This model offers analytical tractability in the statistical description ... -
Scheduling Algorithms for Optical Packet Fabrics
(2003)Utilizing optical technologies to build packet fabrics for high-capacity switches and routers has several advantages in terms of scalability, power consumption, and cost. However, several technology related problems have ...