Exploració per autor "Prat Gomà, Josep Joan"
Ara es mostren els items 70-89 de 141
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GPON redundancy eraser algorithm for long-reach extension
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Text en actes de congrés
Accés restringit per política de l'editorialLong-Reach (LR) extension is a promising scheme for future next generation access networks, enabling less Central Offices (COs) in the field and a large number of customers in the access/metro area. Because of the large ... -
GPON scheduling disciplines under multi-service bursty traffic and long-reach approach
(2010)
Text en actes de congrés
Accés restringit per política de l'editorialGigabit-capable PON (GPON) is the optical access standard being deployed by many incumbent operators, but the Dynamic Bandwidth Allocation (DBA) algorithm for multi-service Quality of Service (QoS) is not specified; hence, ... -
GPON unbundling for multioperator access
(Institute of Electrical and Electronics Engineers (IEEE), 2010)
Text en actes de congrés
Accés restringit per política de l'editorialThis work aims at considering different unbundling options for the Local Loop Unbundling (LLU) in order to provide multi-operator access and consider the economical impact for the FTTH NGA entrants to deploy such alternatives. ... -
GPON unbundling for multioperator access
(Rama de estudiantes del IEEE de Barcelona, 2013-05)
Article
Accés obertNowadays, incumbent operators are deploying GPON FTTH access network over substantial part of the countries in Europe, in a Point-to-Multipoint architecture (P2MP). This architecture is characterized by a shared fiber ... -
Grade of service in UDWDM-PON with statistical wavelength subscribing
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Text en actes de congrés
Accés restringit per política de l'editorialThe Grade of Service (GoS) or ONU rejection probability in coherent UDWDM-PONs with ONU lasers under limited tunability is evaluated. Each active ONU is assigned an exclusive wavelength channel, which is managed by heuristic ... -
Half-duplex transmission avoiding rayleigh backscattering crosstalk in UDWDM-PON with coherent receivers
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés obertUltra Dense Wavelength Division Multiplexing (UDWDM) is a promising technique for access PON, introducing the wavelength-to-the-user concept. The key enabling technology will be a new cost-effective coherent detection ... -
Hitless dynamic wavelength allocation in coherent WDM-PONs
(2016)
Comunicació de congrés
Accés restringit per política de l'editorialWe introduce a novel algorithm for real-time ONU activation (¿ - assignment) and reconfiguration (¿ - tuning) in WDM coherent PONs. The algorithm prevents service interruption of lighted channels and it is experimentally ... -
Hitless wavelength assignment in filterless optical access networks
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Text en actes de congrés
Accés restringit per política de l'editorialAdvantages offered by coherent detection systems in access networks are not limited to the increase of power budget due to the superior sensitivity. Channel selectivity is another intriguing feature offered by coherent systems ... -
L-Band In-Line Remote Amplification for an Extended WDM/PON Ring Architecture
(IEEE Press. Institute of Electrical and Electronics Engineers, 2009-06-28)
Text en actes de congrés
Accés obertIn this paper, a study on a fully passive WDM/PON ring architecture which reaches 19 km distance, while serving more than 1000 users with symmetric several hundred Mbit/s per user is presented. The design is based on ... -
Laser linewidth requirements for remote heterodyne OFDM based PON scenario
(IEEE Press and Wiley, 2004)
Text en actes de congrés
Accés restringit per política de l'editorialThe relationship between the FFT size, modulation format and laser linewidth is studied in a remote heterodyne scenario where phase noise is compensated by pilot tones. Results indicate that the laser linewidth tolerance ... -
Layer 2 redesign for Metro-Access next generation PON
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialNecessary modifications and extensions into Layer 2 of the actual PON access are necessary in order to meet new requirements from services providers and users. We propose a flexible Transmission Convergence (TC) Layer ... -
Limitation to wdm transmission distance due to cross-phase modulation induced spectral broadening in dispersion compensated standard fiber systems
(1999-08)
Article
Accés obertWe describe large spectral broadening due to the interaction of cross-phase modulation/self-phase modulation and fiber dispersion, and explain its contribution to the penalties in standard fiber systems pre- and postcompensated ... -
Low cost homodyne transceiver for UDWDM access networks
(2009)
Text en actes de congrés
Accés restringit per política de l'editorialWe propose and demonstrate a DPSK homodyne architecture based on a simple phase-diversity set-up with analog processing. Due to its spectral properties, it remarkably increases the phase noise tolerance of more conventional ... -
Low cost solutions implementing ultra-dense-WDM in access
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialA high-level optical access network based on coherent technology supporting ultra-dense Wavelength Division Multiplexing (WDM) is developed in the EU FP7 COCONUT project (COst-effective COherent ultra-dense-WDM-PON for ... -
LTE-advanced carrier aggregation supporting fully standard 3GPP MIMO by optical polarization multiplexing
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialLTE-A carrier aggregation investigation demonstrates successful 2×2 MIMO Pol-Mux RoF transmission of five LTE-A carriers modulated in 16QAM in 25 km, three LTE-A carriers in 75 km and an LTE carrier in 100 km SSMF -
LUT-Free carrier recovery for intradyne optical DPSK receivers in UDWDM-PON
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Text en actes de congrés
Accés restringit per política de l'editorialWe present an LUT-free feed-forward carrier recovery architecture in intradyne optical DPSK receivers that reduces ~41% DSP hardware resources and 61% required process clocks with 85% less power consumption in real-time ... -
LUT-free carrier recovery for intradyne optical DPSK receivers in udWDM-PON
(Institute of Electrical and Electronics Engineers (IEEE), 2019-03-15)
Article
Accés obertWe present a lookup table (LUT)-free carrier recovery architecture for intradyne optical DPSK receivers that reduce the required digital signal processing hardware resources, power consumption as well as total process ... -
Minimum channel spacing in an ofdm cpfsk optical coherent system
(1998-03)
Article
Accés restringit per política de l'editorialChannel spacing in optical frequency-division multiplexed (OFDM) coherent optical systems with continuous-phase frequency-shift-keying (CPFSK) is obtained both theoretically and experimentally. The bit error ratio is derived ... -
Modified duobinary polarization-shift keying transmission scheme
(2003)
Comunicació de congrés
Accés restringit per política de l'editorialA new version of duobinary polarization-shift keying scheme is proposed. The relocation of the duobinary filter at the receiver side and the optimization of both transmitter and receiver electrical filters offer a receiver ... -
Monolithically integrated dual-output DEML for full duplex DPSK-ASK and DPSK-SSB ONU in ultra-dense channel spaced access network
(Institute of Electrical and Electronics Engineers (IEEE), 2016-04)
Article
Accés obertUltra-dense access network attracts people's attention recently; however, until now it is difficult to implement it commercially owing to cost, footprint, and the traditional complexity of coherent receiver. Single laser, ...
