Exploració per autor "Spadaro, Salvatore"
Ara es mostren els items 97-116 de 166
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Machine learning assisted EDFA gain ripple modelling for accurate QoT estimation
(The Institution of Engineering and Technology, 2019)
Text en actes de congrés
Accés obertWavelength dependent EDFA gain ripple has an impact on connection's OSNR performance. We propose a machine learning regression model to estimate the end to end gain ripple penalty and to increase QoT estimation accuracy. -
Machine learning-based in-band OSNR estimation from optical spectra
(2019-12-15)
Article
Accés obertMeasuring the optical signal to noise ratio (OSNR) at certain network points is essential for failure handling, for single connection but also global network optimization. Estimating OSNR is inherently difficult in dense ... -
Migration planning from elastic optical networks to spectrally-spatially flexible optical networks
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Text en actes de congrés
Accés obertWe focus on a migration planning from elastic to spectrally-spatially flexible optical networks by upgrading regular with SDM-capable ROADMs. Our most promising strategy reveals that by migrating 30% of the regular ROADMs ... -
Modeling EDFA gain ripple and filter penalties with machine learning for accurate QoT estimation
(Institute of Electrical and Electronics Engineers (IEEE), 2020-05-01)
Article
Accés obertFor reliable and efficient network planning and operation, accurate estimation of Quality of Transmission (QoT) before establishing or reconfiguring the connection is necessary. In optical networks, a design margin is ... -
Modeling filtering penalties in ROADM-based networks with machine learning for QoT estimation
(2020)
Text en actes de congrés
Accés obertMonitoring 3dB bandwidth and other spectrum related parameters at ROADMs provides information about quality of their filters. We propose a machine-learning model to estimate end-to-end filtering penalty for more accurate ... -
Modelling and performance evaluation of a national scale switchless based network
(Springer, 2000)
Text en actes de congrés
Accés restringit per política de l'editorialIn a packet switching based scenario, optical technologies can not completely overcome the problem of insufficient network capacity, due to limitations produced by the presence of electronic switches and regenerators in ... -
Modelling multi-vendor transponders performance and optimizing launch power
(Institute of Electrical and Electronics Engineers (IEEE), 2020)
Text en actes de congrés
Accés obertWe propose physical layer model extensions that capture the performance variations of multivendor transponders and use those with appropriate algorithms to optimize connections’ launch powers. We estimated potential SNR ... -
Multi-tenant software-defined hybrid optical switched data centre
(2015-08-01)
Article
Accés obertWe introduce a holistic solution for software-defined optical data centres (DC). Hybrid optical circuit/packet switching technologies are employed in the data plane, while a software-defined networking (SDN) controller ... -
On Avoiding-Minimizing Burst Collisions in Optical Burst-Switched Networks without Wavelength Conversion
(IEEE, 2009-06-28)
Comunicació de congrés
Accés obertIn this paper, a new MAC protocol for OBS networks is introduced, described and evaluated. Into operation, DAOBS avoids burst collisions in the core of the network by controlling the way OBS nodes access the optical channel. ... -
On the benefits of probabilistic constellation shaping in Flex-Grid/MCF dynamic optical backbone networks
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Text en actes de congrés
Accés obertIn this paper, we propose a novel methodology for estimating the worst-case spectral efficiency (b/s/Hz) of end-to-end paths across a Multi-Core Fiber (MCF)-enabled Flex-Grid optical network, accounting for physical link ... -
On the benefits of resource disaggregation for virtual data centre provisioning in optical data centres
(2017-07-15)
Article
Accés obertVirtual Data Centre (VDC) allocation requires the provisioning of both computing and network resources. Their joint provisioning allows for an optimal utilization of the physical Data Centre (DC) infrastructure resources. ... -
On the benefits of RINA over programmable optical networks for dynamic and smart resource management
(2015)
Text en actes de congrés
Accés restringit per política de l'editorialIn this paper, we describe the basics of the Recursive InterNetwork Architecture (RINA) and its advantages as a packet transport technology over programmable optical networks. In particular, its seamless integration over ... -
On the complexity of configuration and orchestration for enabling disaggregated server provisioning in optical composable data centers
(Optical Society of American (OSA), 2022-12-01)
Article
Accés obertDue to the limitations of traditional data center (DC) architectures, the concept of infrastructure disaggregation has been proposed. DC resources are separated into multiple blades to be exploited independently. As a ... -
On the performance of dynamic source aggregation of sub-wavelength connections in EONs
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialIn elastic optical networks, heterogeneous traffic demands are typically supported by a single type of bandwidth-variable transmitters, which is not always spectrum and cost efficient. In light of this, we recently proposed ... -
On the scalability of dynamic Flex-Grid/SDM optical core networks
(2018-09-04)
Article
Accés obertFuture optical core networks realizing Flex-Grid and Space Division Multiplexing (Flex-Grid/SDM) will be key to effectively cope with the rapid growth of the Internet traffic, thanks to their superior capacity and spectrum ... -
Optical power budget enhancement in 50-90 Gb/s IM-DD PONs with NOMA-CAP and SOA-Based amplification
(2020-05-15)
Article
Accés obertWe report experimental results of a semiconductor optical amplifier (SOA) for optical amplification in a 50-90 Gb/s IM-DD optical access system using non-orthogonal multiple access multiplexing combined with multi-band ... -
Optimal allocation of virtual optical networks for the future internet
(Institute of Electrical and Electronics Engineers (IEEE), 2012)
Text en actes de congrés
Accés obertOptical network infrastructures can be partitioned into multiple parallel, dedicated virtual networks for a physical infrastructure sharing purpose. However, different transport technologies may impact in both the amount ... -
Optimal design of cost-effective OXC and ROADM nodes to maximize the throughput of mesh-based u-DWDM metro-access networks
(Springer, 2023-06-22)
Article
Accés obertMetro-access networks will play a primary role in future network fabrics, enabling connectivity among different actors such as 5G-based radio stations, edge datacenters, businesses, and home users. To provide such heterogeneous ... -
Optimal VDC service provisioning in optically interconnected disaggregated data centers
(2016-07)
Article
Accés obertVirtual data center (VDC) is a key service in modern data center (DC) infrastructures. However, the rigid architecture of traditional servers inside DCs may lead to blocking situations when deploying VDC instances. To ... -
Optimal virtual slice composition toward multi-tenancy over hybrid OCS/OPS data center networks
(Institute of Electrical and Electronics Engineers (IEEE), 2015-10-01)
Article
Accés obertMulti-tenancy is a key feature of modern data centers. It allows for the existence of multiple independent virtual infrastructures, called virtual slices, on top of the same physical infrastructure, each of them specially ...
