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Items from 1 to 20 out of 41 results

chapter

IEEE Recommended Practices for Burst Measurements in the Frequency Domain

IEEE No 265-1966 > 1 - 20

This document is a companion to Technical Committee Report on Recommended Practices for Burst Measurements in the Time Domain, IEEE No. 257, May 1964. In the time domain document, bursts are defined and particular attention is placed on their duration and magnitude.The use of additional characteristics may prove desirable when investigating both cause and effect of a burst. Mathematical transformations...

chapter

IEEE Technical Committee Report on Recommended Practices for Burst Measurements in the Time Domain

IEEE No 257-1964 > 1 - 12

The evolution of technology and the advancement of communications have resulted in an increased awareness of energy bursts. Such bursts which interfere with desired signals are properly classified as noise. In the transmission of information, for example, signals which have low redundancy are highly vulnerable to burst interference. In acoustics, audible sound of the impulsive type is an increasingly...

article

Turn-ON of High-Voltage SiC Thyristors for Fast-Switching Applications

Heather K. O'Brien, Aderinto A. Ogunniyi, William Shaheen, Sei-Hyung Ryu

IEEE Journal of Emerging and Selected Topics in Power Electronics > 2016 > 4 > 3 > 772 - 779

This paper is focused on the characterization of the turn-ON transition of high-voltage SiC thyristors of different epi-layer thicknesses and active-area sizes to determine their suitability and limitations in high-

$dI/dt$

, fast-switching applications. The unique aspects of this paper include the very high current density being switched through the thyristors over a short period of time at initial...

article

Highly Robust Dual-Polarization Doubly Differential PSK Coherent Optical Packet Receiver for Energy Efficient Reconfigurable Networks

Anthony J. Walsh, James Mountjoy, Haymen Shams, Anthony Fagan, more

Journal of Lightwave Technology > 2015 > 33 > 24 > 5218 - 5226

A dual polarization doubly differential phase shift keying coherent optical packet receiver that is robust against frequency offset transients and polarization demultiplexing problems is described in detail for energy efficient reconfigurable networks. Its performance is not affected by large frequency offsets. This leads to greatly reduced waiting times compared with previous coherent optical packet...

chapter

First experimental demonstration of real-time orchestration in a Multi-head metro network

Lida Sadeghioon, Paulette Gavignet, Ahmed Triki, Jean-Luc Barbey, more

2014 16th International Conference on Transparent Optical Networks (ICTON) > 1 - 4

2014 16th International Conference on Transparent Optical Networks (ICTON)

We present for the first time the experimental demonstration of a Real-Time control-plane on the Multi-hEad sub-wavElength swiTching (MEET), Metro architecture. The key control assets are calculated and provided to the edge nodes in a form of grant files. These grant files eliminate the contention possibility at source nodes and destinations, thus they offer a lossless passive optical grooming and...

article

Evaluating OBS by Effective Utilization

Meiqian Wang, Shuo Li, Eric W. M. Wong, Moshe Zukerman

IEEE Communications Letters > 2013 > 17 > 3 > 576 - 579

In optical burst switching (OBS) networks, bursts may be dumped before they reach their destinations due to contention. Accordingly, we classify trunk utilization into effective and ineffective utilizations used for bursts that reach and do not reach their destinations, respectively. As a benchmark for OBS, we consider an idealized version of optical circuit switching (OCS), designated I-OCS, that...

article

Demonstrating Doubly-Differential Quadrature Phase Shift Keying in the Optical Domain

Anthony J. Walsh, Haymen Shams, James Mountjoy, Anthony Fagan, more

IEEE Photonics Technology Letters > 2013 > 25 > 11 > 1054 - 1057

We report for the first time the experimental demonstration of doubly differential quadrature phase shift keying (DDQPSK) using optical coherent detection. This method is more robust against high frequency offsets (FO) than conventional single differential quadrature phase shift keying (SDQPSK) with offset compensation. DDQPSK is shown to be able to compensate large FOs (up to the baud rate) and has...

chapter

Contention Resolution for Optical Switching: Tuning the Channel and Delay Selection Algorithm

W Rogiest, K De Turck, K Laevens, S Wittevrongel, more

2010 Ninth International Conference on Networks > 10 - 15

2010 Ninth International Conference on Networks (ICN 2010)

Optical packet switching and burst switching provide future-proof alternatives to the current electronic switching in the backbone. To resolve burst (or packet) contention, fiber delay lines are put to use as buffers, as vital part of a channel and delay selection (CDS) algorithm. In case no void-filling is applied, earlier studies pointed out that minimal loss is obtained by selecting delay lines...

article

Three-Domain Burst Scheduling in Optically Burst-Switched WDM Networks

Kouji Hirata, Takahiro Matsuda, Tetsuya Takine

IEEE/OSA Journal of Optical Communications and Networking > 2010 > 2 > 6 > 332 - 343

This paper proposes three-domain (3-D) burst scheduling in optically burst-switched WDM networks. This scheme completely eliminates contention at intermediate core nodes by combining contention avoidance schemes in the space, wavelength, and time domains. In the space and wavelength domains, the proposed scheme constructs multiple fixed, tree-shaped routes for burst transmission called λ-trees, each...

chapter

Holding time aware dynamic bandwidth allocation algorithm for emerging bandwidth on demand multicast applications

A. Munir, S. Tanwir, S.M.H. Zaidi

2009 6th International Symposium on High Capacity Optical Networks and Enabling Technologies (HONET) > 16 - 21

2009 6th International Symposium on High Capacity Optical Networks and Enabling Technologies (HONET 2009)

Several switching architectures like circuit switching, packet switching and burst switching have been proposed and developed for efficient utilization of high speed optical networks. Among these Dynamic Optical Circuit Switching (DOCS) has been found to be more useful for provisioning requests in backbone (core) networks due to its capability to provide huge bandwidth by establishing high capacity...

chapter

Requests provisioning algorithms for Dynamic Optical Circuit Switched (DOCS) networks: A survey

A. Munir, S. Tanwir, S.M.H. Zaidi

2009 IEEE 13th International Multitopic Conference > 1 - 6

2009 IEEE 13th International Multitopic Conference (INMIC 2009)

To meet the demands of ever increasing bandwidth hungry applications architectures like circuit switching, packet switching and burst switching have been proposed in the literature. Dynamic Optical Circuit Switching (DOCS) is the optical counter part of the circuit switching; it can provide huge bandwidth to the end users by establishing high capacity light-paths. For provisioning requests in DOCS...

chapter

A Simple and Efficient Data Forwarding Mechanism In Wireless Relay Networks

Wen-Tsuen Chen, Tzu-Ming Lin, Shiao-Li Tsao

VTC Spring 2009 - IEEE 69th Vehicular Technology Conference > 1 - 5

2009 IEEE 69th Vehicular Technology Conference

Wireless relay network is a low-cost solution for extending the service coverage and increasing the throughput of the conventional single-hop wireless network. By deploying a relay network, a base station (BS) can provide services to subscriber stations (SSs) through relay links. The functionality of a relay station (RS) is simpler than a BS, and RSs only forward packets between SSs, RSs and the BS...

article

Nonreservation Fair Bandwidth Allocation Based on Dynamic Replacement in Optical Burst Ring Networks

N. Kitsuwan, E. Oki, N. Kishi, T. Miki

IEEE/OSA Journal of Optical Communications and Networking > 2009 > 1 > 5 > 416 - 427

This paper proposes a real-time allocation scheme for photonic networks that use wavelength division multiplexing (WDM) and optical time division multiplexing (OTDM) technologies in the backbone and ring regional networks, respectively. A frame that is used for transferring data and control information in a ring regional network takes only one round to complete data allocation processing, instead...

article

A Virtual One-Way Signaling Protocol With Aggressive Resource Reservation for Improving Burst Transmission Delay

K.G. Vlachos, D. Monoyios

Journal of Lightwave Technology > 2009 > 27 > 14 > 2869 - 2875

In this paper, we propose a new scheme for the on demand use of capacity in OBS networks, combining a two-way reservation protocol and an assembly scheme process that incorporates an aggressive and forward resource reservation mechanism. The key idea is to tune the assembly timer to be equal to the time associated with the establishment of the end-to-end connection (round-trip-time) and, thus, synchronize...

article

Fair Bandwidth Allocation in Optical Burst Switching Networks

T. Orawiwattanakul, Yusheng Ji, Yongbing Zhang, Jie Li

Journal of Lightwave Technology > 2009 > 27 > 16 > 3370 - 3380

Optical burst switching (OBS) is a promising switching technology for next-generation Internet backbone networks. One of the design challenges is how to provide fair bandwidth allocation in OBS networks; the schemes proposed for general store-and-forward IP switching networks can not be used because of the non-buffering and un-fully utilized bandwidth characteristics of OBS networks. We propose a...

chapter

ONDM 2008 12th Conference on Optical Network Design and Modelling

2008 International Conference on Optical Network Design and Modeling > c1 - 1

2008 International Conference on Optical Network Design and Modeling (ONDM)

The following topics are dealt with: emerging technologies and services; optical packet and burst switching; survivability and restoration; performance evaluation and traffic engineering; routing and wavelength assignment; optical access and metro networks; optical network design.

chapter

Performance Comparison of Optical Circuit and Burst Switching for Distributed Computing Applications

Xiang Yu, Xin Liu, Chunming Qiao, Ting Wang

OFC/NFOEC 2008 - 2008 Conference on Optical Fiber Communication/National Fiber Optic Engineers Conference > 1 - 3

OFC/NFOEC 2008. 2008 Optical Fiber Communication Conference/National Fiber Optic Engineers Conference

Intertask communications in distributed computing applications are modeled using both the frequency of communications and the ratio of data transmission time over computing time to evaluate the performance of static OCS, dynamic OCS, and OBS.

article

An Optical Hybrid Switch With Circuit Queueing for Burst Clearing

E. Wong, M. Zukerman

Journal of Lightwave Technology > 2008 > 26 > 21 > 3509 - 3527

We consider an optical hybrid switch that can function as an optical burst switch and/or optical circuit switch. We propose and describe in detail a new implementation whereby circuits have nonpreemptive priority over bursts. To achieve nonpreemptive priority, during circuit setup time, if there exist bursts that use wavelength channels (also called links) required by the circuit, the circuit is allowed...

article

Modeling the IEC 61000-4-4 EFT Injection Clamp

F. Musolino, F. Fiori

IEEE Transactions on Electromagnetic Compatibility > 2008 > 50 > 4 > 869 - 875

The paper analyzes the test setup required by the International Electrotechnical Commission (IEC) 61000-4-4 to evaluate the immunity of electronic equipment to electrical fast transients (EFTs), and proposes an electrical model of the capacitive coupling clamp, which is employed to add disturbances to nominal signals. The study points out limits on accuracy of this model, and shows how it can be fruitfully...

chapter

Switchover times in optical communication systems — Can they always be ignored?

K. Aziz, H.R. van As, S. Sarwar

2007 International Symposium on High Capacity Optical Networks and Enabling Technologies > 1 - 6

2007 International Symposium on High Capacity Optical Networks and Enabling Technologies

Cyclic service queueing systems have a broad range of applications in communication systems. From legacy systems like the slotted ring networks and switching systems, to more recent systems like optical burst assembly, Ethernet over SDH/SONET mapping and traffic aggregation at the edge nodes, all may employ cyclic service as a means of providing fairness to incoming traffic. This would require the...

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BURST SWITCHING (41)
OPTICAL BURST SWITCHING (13)
PACKET SWITCHING (11)
OPTICAL PACKET SWITCHING (9)
OPTICAL SWITCHES (9)
TELECOMMUNICATION TRAFFIC (8)
OPTICAL BUFFERING (7)
OPTICAL FIBRE NETWORKS (7)
OPTICAL FIBER NETWORKS (6)
SWITCHES (6)
CIRCUIT SWITCHING (5)
BANDWIDTH (4)
INTERNET (4)
OPTICAL NETWORKS (4)
QUEUEING THEORY (4)
ROUTING (4)
SWITCHING CIRCUITS (4)
WAVELENGTH DIVISION MULTIPLEXING (4)
BANDWIDTH ALLOCATION (3)
DELAYS (3)
OPTICAL BURST SWITCHING (OBS) (3)
OPTICAL FIBER COMMUNICATION (3)
OPTICAL WAVELENGTH CONVERSION (3)
PERFORMANCE EVALUATION (3)
SPINE (3)
TELECOMMUNICATION NETWORK ROUTING (3)
ASYNCHRONOUS TRANSFER MODE (2)
BLOCKING PROBABILITY (2)
BROADBAND COMMUNICATION (2)
CHANNEL ALLOCATION (2)
COMMUTATION OPTIQUE (2)
COMMUTATION RAFALES (2)
DELAY (2)
DYNAMIC OPTICAL CIRCUIT SWITCHING (DOCS) (2)
FABRICS (2)
HOLDING TIME AWARE (H.T.A.) (2)
IEEE STANDARDS (2)
IP-OVER-WDM (2)
LABEL SWAPPING (2)
MARKOV PROCESSES (2)
MINIMAX TECHNIQUES (2)
MODELING (2)
MULTIPLEXING (2)
NUMERICAL SIMULATION (2)
OPTICAL CIRCUIT (2)
OPTICAL COMMUNICATION EQUIPMENT (2)
OPTICAL FILTERS (2)
OPTICAL LOSSES (2)
OPTICAL SWITCHING (2)
OPTICAL TELECOMMUNICATION (2)
PHASE MODULATION (2)
POLARIZATION (2)
QUEUEING ANALYSIS (2)
RELAYS (2)
SEMICONDUCTOR OPTICAL AMPLIFIERS (2)
SIMULATION NUMÉRIQUE (2)
STOCHASTIC PROCESSES (2)
SYNCHRONIZATION (2)
TELECOMMUNICATION SWITCHING (2)
TRAFFIC CONTROL (2)
TÉLÉCOMMUNICATION OPTIQUE (2)
WAVELENGTH ASSIGNMENT (2)
WDM (2)
(PBLA)(ZRTI)O₃ (1)
10 GBIT/S (1)
3D MARKOV CHAIN (1)
3D STATE SPACE REDUCTION (1)
ADVANCE RESERVATION (AR) (1)
AGGRESSIVE RESOURCE RESERVATION (1)
ASSEMBLY (1)
ASSEMBLY SCHEME PROCESS (1)
ASYMMETRIC LOAD CONDITIONS (1)
ATM NETWORKS (1)
BACKBONE REGIONAL NETWORKS (1)
BANDWIDTH ADVERTISING (1)
BASE STATION (1)
BENCHMARK TESTING (1)
BIT ERROR RATE (1)
BIT RATE (1)
BLOCKING PERFORMANCE (1)
BROADCAST BANDWIDTH (1)
BROADCASTING (1)
BURST CLEARING (1)
BURST LENGTH PREDICTION (1)
BURST LOSS RATE (1)
BURST MODE TRANSMISSION (1)
BURST SCHEDULING (1)
BURST TRANSMISSION DELAY (1)
BURSTY INPUT TRAFFIC (1)
BUSINESS USERS (1)
CAPACITANCE (1)
CAPACITIVE COUPLING CLAMP (1)
CAPACITORS (1)
CENTRALISED CONTROL PLANE (1)
CHANNEL ALGORITHM (1)
CHANNEL AND DELAY SELECTION (1)
CIRCUIT DELAY (1)
CIRCUIT QUEUEING (1)
CLAMPS (1)
CLOCKS (1)
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Search results

IEEE Recommended Practices for Burst Measurements in the Frequency Domain

IEEE Technical Committee Report on Recommended Practices for Burst Measurements in the Time Domain

Turn-ON of High-Voltage SiC Thyristors for Fast-Switching Applications

Highly Robust Dual-Polarization Doubly Differential PSK Coherent Optical Packet Receiver for Energy Efficient Reconfigurable Networks

First experimental demonstration of real-time orchestration in a Multi-head metro network

Evaluating OBS by Effective Utilization

Demonstrating Doubly-Differential Quadrature Phase Shift Keying in the Optical Domain

Contention Resolution for Optical Switching: Tuning the Channel and Delay Selection Algorithm

Three-Domain Burst Scheduling in Optically Burst-Switched WDM Networks

Holding time aware dynamic bandwidth allocation algorithm for emerging bandwidth on demand multicast applications

Requests provisioning algorithms for Dynamic Optical Circuit Switched (DOCS) networks: A survey

A Simple and Efficient Data Forwarding Mechanism In Wireless Relay Networks

Nonreservation Fair Bandwidth Allocation Based on Dynamic Replacement in Optical Burst Ring Networks

A Virtual One-Way Signaling Protocol With Aggressive Resource Reservation for Improving Burst Transmission Delay

Fair Bandwidth Allocation in Optical Burst Switching Networks

ONDM 2008 12th Conference on Optical Network Design and Modelling

Performance Comparison of Optical Circuit and Burst Switching for Distributed Computing Applications

An Optical Hybrid Switch With Circuit Queueing for Burst Clearing

Modeling the IEC 61000-4-4 EFT Injection Clamp

Switchover times in optical communication systems — Can they always be ignored?

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