M. Lombardo, Andrea Vigezzi, Giuseppe Ietto, Caterina Franchi, Valentina Iori, Federica Masci, Antonella Scorza, Silvia Macchi, Domenico Iovino, Cristiano Parise, Giulio Carcano,
... with melanoma show lower vitamin D serum levels (VDSL) than the healthy population. This hypothesis agrees with ... An observational study was carried out to collect VDSL in patients suffering from melanoma. Our aim was to identify a potential connection between low VDSL and the risk to incur melanoma. Furthermore, we studied the association between VDSL at the diagnosis of melanoma and other germane ... collected from our follow-up storage. We compared VDSL to clinical and pathological parameters (age, sex, tumour ...
Tópico(s): Psoriasis: Treatment and Pathogenesis
2021 - Nature Portfolio | Scientific Reports
Nikolaos Ioannou, Dimitris Katsianis, Dimitris Varoutas,
... of fiber rollout in the final meters. FTTC VDSL is the most widespread technology used for NGA network deployments in Europe but the coverage of VDSL networks is still limited in rural areas. FTTdp ... FTTB especially in rural areas where FTTC and VDSL cannot always deliver service speeds of 30 Mbps ... in 2025 are unlikely to be achieved by VDSL Vectoring and other copper-based technologies. On the ... in comparison to FTTdp G.fast and FTTC VDSL network rollout for delivering service speeds of 30 ...
Tópico(s): Power Line Communications and Noise
2019 - Elsevier BV | Telecommunications Policy
... to prove the Zipper concept and contribute to VDSL standardization. This solution includes the hardware and software needed to demonstrate that the VDSL multicarrier is a feasible, flexible, high-performance, competitive ... provided too. The first measurements performed between two VDSL modems, with injected noise of 20 VDSL equivalent lines, show that it is possible to ... modular and flexible architecture able to allow future VDSL modem extensions. The reuse of this prototype is ...
Tópico(s): Wireless Communication Networks Research
2002 - Institute of Electrical and Electronics Engineers | IEEE Communications Magazine
... in very high bit-rate digital subscriber line (VDSL) downstream transmission. We compare the proposed method to ... ZF) FEXT cancellation and show that for multipair VDSL systems the method achieves rates that are close ... channels. This is the first extensive study of VDSL precoding on measured channel data. The proposed method ... load at the initialization and tracking of precoded VDSL or VDSL2 systems. Finally, we discuss implementation complexity ...
Tópico(s): Electromagnetic Compatibility and Noise Suppression
2007 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Signal Processing
VDSL offers a cost effective solution for the provision of a full-service broadband access network. Standards ... line code, duplexing method, and spectrum requirements for VDSL. VDSL chipsets and modules are becoming available that allow ... hardware integration that has been performed in integrating VDSL technology into an ATM PON system.
Tópico(s): Optical Network Technologies
2000 - Institute of Electrical and Electronics Engineers | IEEE Communications Magazine
Francesco Vatalaro, Franco Mazzenga, Romeo Giuliano,
... up to 35.2~MHz (so-called e-VDSL) as one possible solution to increase the 100 ... at different distances. The paper shows that e-VDSL with SBV is robust, as it can cope ... up to three co-located operators with e-VDSL to coexist, without imposing any of the burdensome ... to 210 Mbit/s per user for e-VDSL and up to 620 Mbit/s per user ...
Tópico(s): Advanced Wireless Communication Techniques
2016 - Institute of Electrical and Electronics Engineers | IEEE Access
Raphael Cendrillon, G. Ginis, Marc Moonen, Katleen Van Acker,
Very high bit-rate digital subscriber line (VDSL) is the latest generation in the ongoing evolution of DSL standards. VDSL aims at bringing truly broadband access, greater than 52 Mbps in ... and is the primary limitation on performance in VDSL. In downstream transmission several crosstalk precompensation schemes have ...
Tópico(s): Semiconductor Lasers and Optical Devices
2004 - Elsevier BV | Signal Processing
This article gives an overview of VDSL and summarizes the main system requirements developed by ANSI-T1E1.4, ETSI-TM6, and ITU-T Study Group 15/Question 4 in ... multicarrier modulation schemes have been proposed for standardization. VDSL is an enabling and cost-effective access solution ... up to 52 Mb/s on short loops. VDSL can be used to provision broadband services for ...
Tópico(s): Advanced Wireless Communication Techniques
2002 - Institute of Electrical and Electronics Engineers | IEEE Communications Magazine
Vladimir Oksman, Jean-Jacques Werner,
... digital subscriber lines, including the main issues of VDSL system design, such as its basic architecture, applications, ... spectral compatibility considerations. Some specific characteristics of the VDSL transceiver startup procedure and high-level architecture, as ... trials, are also presented. The article concentrates on VDSL implementations using single-carrier modulation, which integrates the ... considered one of the main candidates for the VDSL standard in the United States and Europe, and ...
Tópico(s): Optical Network Technologies
2000 - Institute of Electrical and Electronics Engineers | IEEE Communications Magazine
Peter Vetter, D. Goderis, L. Verpooten, A. D. Granger,
... hybrid fiber-twisted pair access networks with a VDSL drop. Although VDSL and ADSL systems are similar from the point ... higher bandwidth and shorter copper loop length for VDSL. The VDSL drivers are given in the introduction. The next ...
Tópico(s): Optical Network Technologies
2000 - Institute of Electrical and Electronics Engineers | IEEE Communications Magazine
... novel adaptive precoder for FEXT cancellation in downstream VDSL was presented and analyzed. This precoder is intended ... adaptive precoder for FEXT cancellation in downstream multichannel VDSL, which is based solely on phase quantization of ...
Tópico(s): Wireless Communication Networks Research
2013 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Signal Processing
Ming-Yang Chen, Wonjong Rhee, Mehdi Mohseni, J.M. Cioffi,
... victim user by 50% or more in dense VDSL (Very high bit-rate Digital Subscriber Lines) deployment. ... improves data rates and line reaches in real VDSL deployment.
Tópico(s): Wireless Communication Networks Research
2012 - IEEE Communications Society | IEEE Transactions on Communications
... is focused on the description of the proposed VDSL and PLC simulation models and on the explanation ... enough knowledgebase for the extended techniques of the VDSL and PLC signal transmission that can be extremely ...
Tópico(s): Advancements in PLL and VCO Technologies
2009 - | International Journal of Computer Network and Information Security
Raphael Cendrillon, G. Ginis, Etienne Van den Bogaert, Marc Moonen,
... precoder for very-high-speed digital subscriber lines (VDSL) that has a low run-time complexity. A ... precoder achieves near-optimal performance in 99% of VDSL channels
Tópico(s): Advanced Wireless Communication Techniques
2007 - IEEE Communications Society | IEEE Transactions on Communications
Raphael Cendrillon, G. Ginis, Etienne Van den Bogaert, Marc Moonen,
... is the major source of performance degradation in VDSL. Several crosstalk cancelers have been proposed to address ... due to the well-conditioned structure of the VDSL channel matrix, the ZF design causes negligible noise ...
Tópico(s): Advanced MIMO Systems Optimization
2006 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Signal Processing
J.J. Lepley, Manoj P. Thakur, Ioannis Tsalamanis, Carlos Bock, C. Arellano, Josep Prat, Stuart D. Walker,
... developed to carry very-high-data-rate DSL (VDSL) signals over a fiber to the cabinet architecture ... uncooled semiconductor lasers for the transmission of multiple VDSL signals by using inexpensive interfacing hardware in the ...
Tópico(s): Advanced Photonic Communication Systems
2005 - Optica Publishing Group | Journal of Optical Networking
Raphael Cendrillon, Marc Moonen, G. Ginis, Katleen Van Acker, Tom Bostoen, P. Vandaele,
... major problem in modern DSL systems such as VDSL. Many crosstalk cancellation techniques have been proposed to ... paper, we investigate partial crosstalk cancellation for upstream VDSL. The majority of the detrimental effects of crosstalk ...
Tópico(s): Optical Network Technologies
2004 - Springer Science+Business Media | EURASIP Journal on Advances in Signal Processing
Frank Sjöberg, Rickard Nilsson, Per Ola Börjesson, Per Ödling, B. Wiese, John A. C. Bingham,
... based very high bit rate digital subscriber line (VDSL) systems. The method operates in the frequency domain ... signal with the same average power as the VDSL signal, suppresses the RFI with 40-50 dB, ...
Tópico(s): Advanced Wireless Communication Techniques
2004 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Circuits and Systems I Fundamental Theory and Applications
Very high-speed digital subscriber line (VDSL) upstream data transmission in a distributed environment will suffer from relatively strong far-end crosstalk generated by the shorter lines in the ... mainly based on work that was done in VDSL standardization. It is an extended version of work ...
Tópico(s): Low-power high-performance VLSI design
2002 - Institute of Electrical and Electronics Engineers | IEEE Journal on Selected Areas in Communications
Rickard Nilsson, Frank Sjöberg, M. Isaksson, J.M. Cioffi, Sarah Kate Wilson,
... algorithm that autonomously synchronizes all DMT-Zipper based VDSL modems in an unbundled access network, solving the ... The algorithm we present runs autonomously in each VDSL modem in the central office or in the ...
Tópico(s): Wireless Communication Networks Research
2002 - Institute of Electrical and Electronics Engineers | IEEE Journal on Selected Areas in Communications
... degradation in very-high-rate digital subscriber line (VDSL) transmission systems. The traditional single-user data detector ... the potential benefits of multiuser detection (MUD) for VDSL signals with strong crosstalkers. Impulse noise is one ...
Tópico(s): Wireless Communication Networks Research
2001 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Circuits and Systems I Fundamental Theory and Applications
Soo‐Jin Park, Sangin Kim, Kil-Ho Song, Jong-Rak Lee,
... CAP)-modulated very high-speed digital subscriber line (VDSL) signals over the hybrid-fiber twisted pair (HFTP) ... dB greater than the required SNR of a VDSL modem. The bit error rate (BER) of the VDSL transmission over HFTP was measured. Measurement results show ...
Tópico(s): Advanced Optical Network Technologies
2001 - Institute of Electrical and Electronics Engineers | Journal of Lightwave Technology
L. De Clercq, M. Peeters, S. Schelstraete, T. Pollet,
... high-speed digital transmission systems like ADSL and VDSL use a much larger spectrum. Because VDSL signals contain frequencies up to several megahertz, these ... their effect can be mitigated in multicarrier-based VDSL systems.
Tópico(s): Advanced Wireless Communication Techniques
2000 - Institute of Electrical and Electronics Engineers | IEEE Communications Magazine
Frank Sjöberg, M. Isaksson, Rickard Nilsson, Per Ödling, Sarah Kate Wilson, Per Ola Börjesson,
... based very high bit-rate digital subscriber line (VDSL) systems on copper wires. This scheme divides the ... in different environments such as mixed ADSL and VDSL traffic under radio frequency interference and with different ...
Tópico(s): PAPR reduction in OFDM
1999 - IEEE Communications Society | IEEE Transactions on Communications
... performance of very high-speed digital subscriber lines (VDSLs). In the discrete multi-tone (DMT) based VDSL, some of the subchannels which are vulnerable to ...
Tópico(s): Full-Duplex Wireless Communications
1998 - Institution of Engineering and Technology | Electronics Letters
Franco Mazzenga, Romeo Giuliano,
... Subscriber Line type 2 (VDSL2) and Long Reach VDSL (LR-VDSL) is presented in this paper. It accounts for ... different DSL technologies such as VDSL2 and LR-VDSL sharing the same copper cable from the Cabinet ...
Tópico(s): Advanced Wireless Communication Techniques
2019 - IEEE Communications Society | IEEE Transactions on Communications
F. Moulin, F. Gauthier, A. Zeddam, M. Ouzzif,
... a potential source of impairment of ADSL and VDSL services. The authors present simple and easy to ... impulse noise on discrete-multitone-based ADSL and VDSL transmission systems. The technique is validated by a ... to determine the optimum parameters of ADSL and VDSL systems that ensure a better protection against impulse ...
Tópico(s): Advanced Data Compression Techniques
2003 - Institution of Engineering and Technology | IEE Proceedings - Science Measurement and Technology
Pravesh Biyani, Amitkumar Mahadevan, Shankar Prakriya, Patrick Duvaut, S. Prasad,
... the vectored very-high-speed digital subscriber line (VDSL) system is part of the additive noise at ... noise cancellation (CoMAC) algorithm for the upstream (US) VDSL that can be applied subsequent to any self ...
Tópico(s): Advanced Wireless Communication Techniques
2013 - IEEE Communications Society | IEEE Transactions on Communications
Joan Francesc Fondevila i Gascón,
La introducción comercial de la tecnología VDSL puede dinamizar las soluciones de televisión IP (IPTV) y el periodismo audiovisual en general a través de la red de banda ancha. ... las incipientes experiencias de televisión a través de VDSL en diversos países permite establecer una prospectiva que ...
Tópico(s): ICT Impact and Policies
2009 - Forum XXI | Vivat Academia
Ido Binyamini, Itsik Bergel, Amir Leshem,
... talk (FEXT) cancellation in the downstream of multichannel VDSL. The precoder is based on error signal feedback ...
Tópico(s): Wireless Communication Networks Research
2012 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Signal Processing