Distributed E2E QoS-Based Path Computation Algorithm Over Multiple Inter-Domain Routes

  • Cousin B.
  • Djarallah N.
  • Lahoud S.
  • Pouyllau H.
  • Sauze N.

1 Telecommunication operators are looking for more revenues and efficient utilization of their network infrastructure resources, while satisfying consumer needs. Nevertheless, current value-added services that require the involvement of several operators are deployed without any assurance on the delivery quality of traffic, mostly due to limitations of the used interdomain ...

An OFDMA-Based Optical Access Network Architecture Exhibiting Ultra-High Capacity and Wireline-Wireless Convergence

  • Cano I.
  • Kanonakis K.
  • Kourtessis P.
  • Krimmel H.
  • Lange C.
  • Leuthold J.
  • Milosavljevic M.
  • Prat J.
  • Romero S.
  • Schaich F.
  • Tomkos I.
  • Weis E.
  • Winter M.

This paper presents a novel optical access network architecture based on Orthogonal Frequency Division Multiple Access (OFDMA) technology and applied on a Passive Optical Network (PON) topology. In compliance with Next Generation Optical Access (NGOA) requirements, this architecture targets to outperform existing PON solutions in terms of total capacity, bandwidth ...

An OFDMA-Based Optical Access Network Architecture Exhibiting Ultra-High Capacity and Wireline-Wireless Convergence

  • Cano I.
  • Kanonakis K.
  • Kourtessis P.
  • Krimmel H.
  • Lange C.
  • Leuthold J.
  • Milosavljevic M.
  • Prat J.
  • Romero S.
  • Schaich F.
  • Tomkos I.
  • Weis E.
  • Winter M.

This paper presents a novel optical access network architecture based on Orthogonal Frequency Division Multiple Access (OFDMA) technology and applied on a Passive Optical Network (PON) topology. In compliance with Next Generation Optical Access (NGOA) requirements, this architecture targets to outperform existing PON solutions in terms of total capacity, bandwidth ...

Comparison of End-to-End and Network-Supported Fast Startup Congestion Control Schemes

  • Scharf M.

A fundamental challenge for congestion control is the flow startup phase after the connection setup or after long idle periods. The Transmission Control Protocol (TCP) uses the time-consuming Slow-Start mechanism in that case. The objective of fast startup congestion control is to fully utilize a path much more rapidly. Faster ...

Effective Multi-Source Cooperative Relaying Transmission with Minimum Control Overhead

  • Leonard J. Cimini J.
  • Zhang L.

In this paper, focusing on a multi-source, two-stage selective decode-and-forward (DF) relaying network in which the multiple sources have a common destination, we propose an effective cooperative relaying transmission scheme via exploiting decentralized distributed space-time block coding (Dis-STBC). This scheme is a unified multi-source cooperative transmission scheme, regardless of the ...

Soft channel estimation using the Iterative Soft Correlator Estimator (I-SCE)

  • Fettweis G.
  • Rave W.
  • Santos A.

We present a simple and efficient method that iteratively refines the channel estimate in a turbo equalizer exploiting soft feedback of the decoder. Our proposed lowcomplex iterative solution for channel estimation performs repeatdly an interference cancelation step followed by correlation with symbol estimates derived from the output of the decoder. ...

A Survey and Analysis of Media Keying Techniques in the Session Initiation Protocol (SIP)

  • Gurbani V.
  • Kolesnikov V.

Exchanging cryptographic keys to encrypt the media stream in the Session Initiation Protocol (SIP) has proven difficult. The challenge is to effectively exchange keys while preserving the features of the protocol (e.g., forking, re-targeting, request recursion, etc.), minimizing key exposure to unintended parties, eliminating voice clipping, maintaining end-to-end key privacy, ...

World Wide Web Journal

  • Bedini I.
  • Crespi N.
  • Laga N.
  • Molina B.

With the adoption of service-oriented paradigm on the Web, many software services are likely to fulfil similar functional needs of the users. Service selection therefore becomes a key issue; especially in the emerging marketplaces of services context, which are mediating between service providers and service consumers. There is a huge ...

3D Objects Watermarking and Tracking of their Visual Representations

  • Macq B.
  • Rondao Alface P.
  • Sales M.

In the context of 3D watermarking, most of the state-of-the-art techniques analyze a 3D/3D approach where the insertion and the extraction of the mark take place over the object itself, whereas the most common use of 3D objects is done through its 2D projections or eventually stereovision. In this paper ...

Design of Complex Structured Monolithic Heat Sinks for Enhanced Air Cooling

  • Hernon D.
  • Hodes M.
  • Krishnan S.
  • Lyons A.
  • Mullins J.

The design and characterization of monolithic heat sinks, which can take the form of complex structures, is reported. The designs were conceived to augment heat transport for enhanced air cooling by exploiting clearly identified physical mechanisms, i.e., by streaming the flow through a two-dimensional array of polygonal ducts, by introducing ...

Securing Host-Based Mobility and Multi-Homing Protocols against On-Path Attackers

  • Hampel K.
  • Kolesnikov V.

Host-based mobility and multi-homing protocols allow hosts to migrate ongoing transport sessions between networks or network interfaces. While such protocols can facilitate vertical mobility in a cost-efficient and accessagnostic manner, they are hard to secure when strong authentication between end points is not available. We present a balanced security solution ...

Advanced Monitoring of PONs

  • Hehmann J.

New integrated monitoring concepts for physical layer supervision of optical access networks are presented. Simple remotely controlled integrated measurement systems will help network operators to improve network quality and reliability and to save operational costs. Introduction The increasing amount of optical fiber connections in access and metro networks and the ...

Energy-Autarkic Monitor for FTTx Networks

  • Becker J.
  • Freude W.
  • Hehmann J.
  • Huebner M.
  • Koos C.
  • Leuthold J.
  • Pfeiffer T.
  • Roeger M.

FTTx monitors with sophisticated hardware need 0.7 µW of electrical power when controlled through a special protocol. This power can be delivered by a 5 dBm optical source at a dedicated wavelength to up to 64 monitors. ©2010 Optical Society of America OCIS codes: (060.0060) Fiber optics and optical communications; ...

Monolithic Integration of a Semiconductor Optical Amplifier and a Photodiode with Low Polarization Dependence for 100 Gb/s Links

  • Achouche M.
  • Bellini S.
  • Brenot R.
  • Caillaud C.
  • Carpentier D.
  • Drisse O.
  • Glastre Lemaitre G.
  • Lelarge F.
  • Paret J.

We demonstrate the monolithic integration of a buried heterostructure SOA and a deep ridge PIN photodiode for 100 Gbit/s OOK links at 1.55microns. Our structure allows separate optimization of the SOA and the photodiode. The integrated receiver presents simultaneously a peak responsivity of 88 A/W with a low polarization dependence ...

Vers des ecosystemes d'objets sociaux

  • Marie N.
  • Myriam R.
  • Sophia-Antipolis) G.

Aujourd'hui la majorité des communications sociales s'effectue de manière distribuée ou en silo. En outre, les sujets/besoins motivant ces interactions sont rarement explicitement exprimés. Nous introduisons cidessous la notion d'objet social qui constitue une réponse à ces lacunes. Nous détaillons ensuite l'environnement technologique émergeant qui est favorable à ce concept ...

Intelligent Deactivation of Transmitters for a Greener Cellular Network

  • Bhaumik S.
  • Guerra R.
  • Narlikar G.

Going green to reduce energy expenditure has become an important goal for cellular operators, particularly in emerging markets. We study a nation-wide commercial GSM network in India, to find that there are several redundancies in transmitters (sectors) from a coverage and capacity perspective during many hours of the day. Therefore, ...

16 x 112 Gb/s NRZ-DQPSK lab experiments and WDM field trial over ultimate Metro distances including high PMD fibers

  • Braun R.
  • Idler W.
  • Junginger B.
  • Klekamp A.
  • Kuebart W.
  • Lach E.
  • Schippel A.
  • Schneiders M.
  • Schuh K.
  • Steffan A.
  • Vorbeck S.
  • Werner D.

A 16 x 112 Gb/s field transmission trial with EDFA only was performed over legacy fiber infrastructure of Deutsche Telekom having partially high PMD. Supported with a commercial PMD compensator, transmission over high PMD of 8 ps with negligible penalty was achieved. Enabled by the maturity of 43 Gb/s components ...

Modeling and Evaluation of Address Resolution Scalability in Data Center Interconnect Solutions

  • Klein D.
  • Michael Menth (University Of Wuerzburg G.
  • Pries R.
  • Scharf M.
  • Soellner M.

More and more services are provided by large data centers with a potentially very large number of hosts. The internal network in a data center is typically based on Ethernet. Different technologies exist in order to transparently interconnect distributed data centers. They typically tunnel Ethernet traffic over the wide area ...

APEX 2011 Reliability Testing of PWB Plated Through Holes in Air-to-Air Thermal Cycling

  • Smetana J.

The High Density Packaging Users Group Consortium investigated plated through hole reliability of printed wiring board test vehicles constructed with 20 different Pb-free capable printed wiring board materials. The study contained a total of 27 different constructions built by three high-end Asia based PWB manufacturers. The materials were tested using ...