Browsing by Subject "Comunicacions òptiques"
Now showing items 1-20 of 587
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1Gbps full-duplex links for ultra-dense-WDM 6.25GHz frequency slots in optical metro-access networks
(2016-01-11)
Article
Open Access1Gbps full-duplex optical links for 6.25GHz ultra dense WDM frequency slots are demonstrated and optimized for cost-effective metro-access networks. The OLT-ONU downlinks are based on 1Gbps Nyquist-DPSK using MZM and ... -
1Gb/s service planning on standard PON technologies
(2017-06)
Audiovisual
Open AccessTutorial impartit dins del marc del 2nd International Workshop on Elastic Networks Design and Optimisation (ELASTICNETS 2017). -
5G transport network blueprint and dimensioning for a dense urban scenario
(Institute of Electrical and Electronics Engineers (IEEE), 2017)
Conference report
Restricted access - publisher's policyIn this paper, we provide a quantitative evaluation of the deployment aspects and dimensioning of the 5G transport architecture in a representative European city. In particular, we select an example dense urban city scenario ... -
7.5 Gb/s direct DFB phase modulation with 8-DPSK for 6.25 GHz spaced coherent UDWDM-PONs
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Conference report
Restricted access - publisher's policyWe demonstrate an 8-DPSK directly phase-modulated DFB with intradyne detection in a 50 km, 6.25 GHz channel spaced UDWDM-PON. A bit rate of 7.5 Gb/s is achieved with Rx sensitivity of -31 dBm at BER=10-3. -
ABNO-driven content distribution in the telecom cloud
(2017-11-01)
Article
Open AccessAs current traffic growth is expected to strain capacity of today¿s metro network, novel content distribution architectures where contents are placed closer to the users are being investigated. In that regard, telecom ... -
A case of acquisition, transmission and use of information to control a manufacturing process
(Universitat Politècnica de Catalunya, 2009-10-08)
Master thesis
Open Access -
Access services availability and traffic forecast in PON deployment
(IEEE, 2011)
Conference report
Restricted access - publisher's policyIn this paper, offered and new broadband services for residential customers are considered in Passive Optical Networks (PONs). The user bit rates together with QoS requirements are evaluated for the availability of ... -
Achievable data rate of coordinated multi-point transmission for visible light communications
(Institute of Electrical and Electronics Engineers (IEEE), 2017)
Conference report
Restricted access - publisher's policyThis paper studies the sum data rate that a Visible Light Communication (VLC) system with multiple users canachieve when phosphor-converted white LED panels are usedto provide illumination and communication simultaneously. ... -
Achieving energy efficiency: an energy-aware approach in SDN
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Conference report
Restricted access - publisher's policyAchieving energy efficiency has recently become an essential aim of networking research due to the ever increasing power consumption and CO2 emissions generated by large data networks. For this problem, the emerging paradigm ... -
A Comparison of Nonlinear Media for All-Optical Signal Processing
(Universitat Politècnica de Catalunya / Technical University of Denmark. Fotonik Department / Politecnico di Torino. Dipartimento di elettronica, 2013-07-31)
Master thesis (pre-Bologna period)
Open Access[ANGLÈS] This thesis is focused on benchmarking different nonlinear media that are currently used for all-optical signal processing. The materials survey has been based on both low linear losses and highly nonlinear ... -
Active PCE demonstration performing elastic operations and hitless defragmentation in flexible grid optical networks
(2015-02-01)
Article
Restricted access - publisher's policy -
Adaptive burst admission and forwarding in OBS networks
(IEEE, 2009-07-31)
Conference report
Open AccessThis paper addresses the problem of controlling the performance of optical burst switching (OBS) networks in presence of non-stationary traffic demands. We propose a joint burst admission control and forwarding mechanism ... -
Advanced Methods for the Measurement of Chromatic Dispersion at Optical Frequencies
(Universitat Politècnica de Catalunya, 2015-02-16)
Master thesis
Open AccessCurrently, most networks are hybrid, combining fiber with copper wire, but the goal is for them to be completely of fiber. Like any other transmission medium, using fiber has some drawbacks, being chromatic dispersion one ... -
Advanced techniques for optical access networks based on OFDM
(Universitat Politècnica de Catalunya, 2012-10-05)
Master thesis
Open AccessThis Master Thesis aims to review and study the different alternatives for application of OFDM technologies to optical fibre networks and assess their potential as the basis of the next generation PON. New proposals based ... -
Advances in wireless community networks with the community-lab testbed
(2016-07)
Article
Open AccessBeyond traditional telecom providers, citizens and organizations pool their own resources and coordinate in order to build local network infrastructures to address the digital divide in many parts of the world. These ... -
A feedback-based hybrid OBS/OCS architecture with fast-over-slow capability
(2011)
Conference lecture
Open AccessDynamic bandwidth allocation in response to the bandwidth requirements of new emerging applications is an essential demand for future optical networks. Hybrid switching architectures combining the benefits of different ... -
Agile reconfigurable and traffic adapted all-optical access-metro networks
(2009)
Conference report
Restricted access - publisher's policyThe emerging high bandwidth and on-demand user applications require improvements in capacity, configurability and resiliency in next generation optical access networks to incrementally expand on the basis of customers ... -
A GMPLS/OBS network architecture enabling QoS-aware end-to-end burst transport
(2010-07-01)
External research report
Open AccessThis paper introduces a Generalized Multi-Protocol Label Switching (GMPLS)-enabled Optical Burst Switched (OBS) network architecture featuring end-to-end QoS-aware burst transport services. This is achieved by setting up ... -
Algebraic bright and vortex solitons in defocusing media
(2011-08-15)
Article
Restricted access - publisher's policyWe demonstrate that spatially inhomogeneous defocusing nonlinear landscapes with the nonlinearity coefficient growing toward the periphery as (1+|¿|¿) support one- and two-dimensional fundamental and higher-order bright ... -
All-fiber mach-zehnder interferometer for dwdm-pon bidirectional multiplexing
(Universitat Politècnica de Catalunya, 2015-07)
Master thesis
Open AccessNext generation optical access networks (FTTH, Fiber-to-the-Home), use wavelength division multiplexing (WDM) to highly increase the communication capacity to/from the users. A key issue in these networks is to split/combine ...
