Performance evaluation of a multirate, multiclass OCDM/WDM optical packet switch

Raddo, Thiago R.; Sanches, Anderson L.; Reis, Jose V. dos; Borges, Ben‐Hur V.

doi:10.1109/imoc.2011.6169296

Cited by 6 publications

(4 citation statements)

References 13 publications

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“…The proposed scheduling algorithm is executed at each slot time of the multiservice OCDM/WDM optical packet switch. The proposed scheduling algorithm has been modified from [22,23], in order to support multiservice transmission [24]. In this paper, the multiservice differentiation is assisted by a number of technologies such as code conversion, wavelength conversion, and Fiber Delay Lines (FW and FB) buffering [25].…”

Section: Node Architecturementioning

confidence: 99%

“…(3) all successful packets routed either direct codeword packets, wavelength converted packets and buffered packets are directed to SF i switches based on decisions taken by the control unit; (4) finally, packets are routed towards to desired output channel after been coded and multiplexed [24]. Once again, there are only three possible places where the packet could be dropped; first place, if HP or LP packet did not get free FW buffer and no guarantee of output reservation; second place, if LP packet did not get free FB buffer; third place, if LP packet exceed four round in FB buffer and no chance to leave the node.…”

Section: Node Architecturementioning

confidence: 99%

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Packet Loss Rate Differentiation in slotted Optical Packet Switching OCDM/WDM

2017

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We propose a multi-class mechanism for Optical Code Division Multiplexing (OCDM), Wavelength Division Multiplexing (WDM) Optical Packet Switch (OPS) architecture capable of supporting Quality of Service (QoS) transmission. OCDM/WDM has been proposed as a competitive hybrid switching technology to support the next generation optical Internet. This paper addresses performance issues in the slotted OPS networks and proposed four differentiation schemes to support Quality of Service. In addition, we present a comparison between the proposed schemes as well as, a simulation scheduler design which can be suitable for the core switch node in OPS networks. Using software simulations the performance of our algorithm in terms of losing probability, the packet delay, and scalability is evaluated.

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Section: Node Architecturementioning

confidence: 99%

Section: Node Architecturementioning

confidence: 99%

Packet Loss Rate Differentiation in slotted Optical Packet Switching OCDM/WDM

2017

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“…Nonetheless, IP routing operates electrically in the network layer and cannot be processed at a speed that matches the huge transmission capacity provided by optical fiber [2]. A potential solution to this challenging shortcoming has been proposed in [3], where we investigated a multirate, multiclass optical packet switch (OPS). In this approach, the bandwidth on a wavelength is divided into small fractions labelled with codes and assigned to different channels.…”

Section: Introductionmentioning

confidence: 99%

Multiservice, multirate IP transmission over OCDMA network

Raddo

Sanches

Reis

et al. 2013

2013 15th International Conference on Transparent Optical Networks (ICTON)

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In this paper, we propose a new Internet protocol (IP) traffic transmission architecture over optical code-division multiple-access (OCDMA) network capable of providing multiservice, multirate transmissions. The new architecture is independent of the OCDMA scheme employed. The main idea is to use multi-weight multi-length optical orthogonal code (MWML-OOC) as signature sequence of an incoherent OCDMA system to achieve multiservice and multirate transmissions. Furthermore, in order to evaluate the packet error rate (PER) of the proposed multiservice IP transmission, we derive a bit error rate (BER) expression of a MWML-OOC OCDMA system. The network performance is analyzed in terms of the channel utilization of the users' classes. The simulation results show that better performance is obtained by users defined with high-weight code. This is especially evident when the channel utilization is low. Keywords: multiservice, multirate IP Transmission, OCDMA, BER. INTRODUCTIONThe recent advent of new Internet protocol (IP) based multimedia applications such as IPTV, e-learning, e-culture based on 3-D full-HD (high-definition), e-health, and so on, in ubiquitous Internet-based communication networks will eventually demand for differentiated service types and diversified data rates. These aspects most certainly will become an essential challenge for future optical networks [1]. IP has been the dominant protocol to deliver the recent multimedia applications services [2] and will continue to grow at an exponential rate as the demand for multimedia services across the Internet continues to expand. Nonetheless, IP routing operates electrically in the network layer and cannot be processed at a speed that matches the huge transmission capacity provided by optical fiber [2]. A potential solution to this challenging shortcoming has been proposed in [3], where we investigated a multirate, multiclass optical packet switch (OPS). In this approach, the bandwidth on a wavelength is divided into small fractions labelled with codes and assigned to different channels. However, like any emerging technology, there are still a few drawbacks to be addressed in OPS, such as contention resolution, to emerge it as a successful technology. Currently, optical code-division multiple-access (OCDMA) has become an attractive technology in all-optical networking, particularly due to features like easy addition of new users, possibility of differentiated-QoS at the physical layer, and support to bursty and asynchronous networks traffic, i.e., IP traffic nature [1], [2], [4]. In addition, OCDMA provides more immunity to packet collisions than dynamic bandwidth allocation in time-division multiple-access schemes [5]. Moreover, OCDMA has a teletraffic capacity larger than wavelength-division multiple-access, especially when bursty traffic is carried out [6].In this paper, we propose and introduce a new multiservice, multirate IP traffic network architecture over OCDMA. The proposed architecture is independent of the OCDMA scheme or spreading code e...

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“…The output packet contentions are solved in both the code and wavelength domains in Optical Code Division Multiplexing (OCDM)/Wavelength Division Multiplexing (WDM) Optical Packet Switches [3]. Beat noise as well Multiple Access Interference (MAI) noises may be better combated when the DPSK-OCDM system is used with respect to the On-Off-Keying Optical Code-Division Multiplexing (OOK-OCDM) system.…”

Section: Introductionmentioning

confidence: 99%

Performance of OCDM/WDM Optical Packet Switches with DPSK-OCDM modulation system

Eramo

2013

Optik - International Journal for Light and Electron Optics

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Performance evaluation of a multirate, multiclass OCDM/WDM optical packet switch

Cited by 6 publications

References 13 publications

Packet Loss Rate Differentiation in slotted Optical Packet Switching OCDM/WDM

Packet Loss Rate Differentiation in slotted Optical Packet Switching OCDM/WDM

Multiservice, multirate IP transmission over OCDMA network

Performance of OCDM/WDM Optical Packet Switches with DPSK-OCDM modulation system

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