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Service Quality Aspects in Ferry Passenger Transport - Examples from Norway
Customer satisfaction ferry transport service elements service policy service quality
2010/8/16
Changes in the level of service for scheduled passenger transport influence both operating costs and passengers’ generalised travel costs. This article focuses on the service level and service quality...
On the Spectrum-Efficiency of Bandwidth-Variable Optical OFDM Transport Networks
Spectrum-Efficiency Bandwidth-Variable Optical OFDM Transport Networks
2015/6/10
We investigated the high spectrum efficiency property of the bandwidth-variable optical OFDM (BV-OOFDM) transport networks. In contrast to mixed-line-rate (MLR) networks, BV-OOFDM enables flexible all...
Next Generation Transport Network Architecture
Next Generation Transport Network Architecture
2015/6/10
This paper discusses the prospects of and challenges facing the next generation transport network architectures. Enhancements expected in optical path technologies are highlighted and state-of-the-art...
Simultaneous 3 × 10-Gbps Optical Data Transmission in 1-μm, C-, and L-wavebands Over a Single Holey Fiber for Ultrabroad-Waveband Photonic Transport System
Fiber optics communications Optical communications Microstructured fibers Semiconductor lasers
2015/6/10
Simultaneous 3 × 10-Gbps error-free photonic transmissions with clear eye-openings are demonstrated in the 1-μm, C-, and L-wavebands by using an ultrabroad-waveband photonic transport system comprisin...
several architectural aspects and options are discussed for producing video based services: storage and transcoder placement, routing and (staggered) multi-casting,buffering/smoothing and reti...
Soft Decision FEC for 100G Transport Systems
Fiber optics communications Optical communications
2015/6/8
A practical implementation of soft decision based FEC for 100G transport systems is discussed. The keys are a stronger coding gain using triple-concatenated FEC and a multi-lane distribution architect...
High-Speed Electronic Circuits for 100 Gb/s Transport Networks
Fiber optics communications Fiber optics links subsystems
2015/6/8
An overview of state-of-the-art high-speed electronic circuits for major 100G modulation schemes is given. The results show the trade-off between electrical performance and energy efficiency and lead ...
Limitations for Applying Standard 10G Ethernet Sequence Order-Set in G.709 Core Transport Network
Fiber optics communications 060.4250 Networks
2015/6/5
Current lab assessment shows standard 10G Ethernet link fault sequence ordered-set works as expected between two direct attached clients. This paper evaluates the limitations applying the same ordered...
Challenges of 40/100 Gbps deployments in long-haul transport networks on existing fibre and system infrastructure
Optical communications Modulation
2015/6/5
High-bandwidth services require faster long-haul transport networks. Meanwhile operators are not ready to make evolve significantly their fibre infrastructure based on PMD-limited G.652 fibre while th...
Recently revised ITU-T G.709 defines a container for 100 Gbps signals called an OTU4. This paper highlights some of the reasons the OTU4 bit rate, frame structure, and mapping scheme were chosen.
Application of SONET Adaptive Rate to Multi-Carriers Transport Network
Fiber optics communications Networks
2015/6/5
This paper provides a current assessment of SONET Adaptive Rate technique from the local access service provider perspective. It also highlights how it shortens the service provisioning and activation...
A Systematic Approach to Develop and Manage SRLGs for Optical Transport Networks with Multi-Tier Resources
General
2015/6/5
This paper presents a generalized framework that characterizes multi-tier resource dependency and operators’ diversity policies in transport networks. The framework enables the design of systematic ap...
100GbE Optical Transport, Appropriate Modulation Formats, and Impact on Deployed Transport Networks
100GbE Optical Transport Appropriate Modulation Formats Impact Deployed Transport Networks
2015/6/5
We review the system requirements for 100GbE optical transport and compare possible technical solutions. Our experience, derived from modeling, laboratory experiments and field trials on deployed tran...
Deploying spectrally-efficient 100Gb/s coherent transponder technology in carrier networks can yield substantial CAPEX and OPEX savings. This paper discusses these economic gains and how a carrier can...
Design of Data Model for Urban Transport GIS
Geographic Information System (GIS) Transit GIS Transit Route Network, Data Mode
2013/3/5
Constructing the data model for public transportation by integrating the spatial and the non-spatial information, is the basis of reasonable plan and effective management of urban public transport. Th...