Performance comparison of hybrid 1-D WDM/OCDMA and 2-D OCDMA towards future access network migration scenario

Galdino, Lídia; Raddo, Thiago R.; Sanches, Anderson L.; Bonani, Luiz Henrique; Moschim, Edson

doi:10.1109/icton.2012.6254425

Cited by 13 publications

(18 citation statements)

References 7 publications

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“…1. Therefore, (5) indicates that the considered encoder/regenerator enhances signal ER by, at least, squaring it. For a given average power, such ER enhancement increases the optical signal-to-noise ratio (OSNR) and thus improves signal quality.…”

Section: Introductionmentioning

confidence: 99%

An all‐optical OCDMA encoder with simultaneous signal regeneration based on fiber four‐wave mixing

Galdino

Abbade

Bonani

et al. 2014

Micro & Optical Tech Letters

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Section: Introductionmentioning

confidence: 99%

An all‐optical OCDMA encoder with simultaneous signal regeneration based on fiber four‐wave mixing

Galdino

Abbade

Bonani

et al. 2014

Micro & Optical Tech Letters

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“…In addition, we assume a chip synchronous scenario, which reflects the worst possible case for the system analyses [8], [10], and consider that users transmit data bits "0" and "1" with equal probability ½ [10]. Accordingly, we have derived new BER and PER expressions of class users based on the formalism proposed in [1].…”

Section: Description and Performance Analysis Of Multiservice Ip Tranmentioning

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 OCFHC/OOC stands out due to its good performance [79], [80] and good code generation features since the code length can be chosen regardless of the number of available wavelengths without sacrificing the code good correlation properties. 2-D codes provide a significant increase in code cardinality, allowing for a larger number of simultaneous users in the network.…”

Section: Frequency Hopping Fh-ocdmamentioning

confidence: 99%

“…Still regarding the network scenario evaluated in Figure 4.8, it is worth pointing out that the BER curves for class-1 (circles, lines) interestingly starts at a number of simultaneous users above the code weight 1 plus one ( 1 + 1). This means it is necessary at least 1 + 1 simultaneous users in the network for an error eventually to occur [79]. This occurs because MAI is the only degrading factor, the detection threshold is set to the code weight 1 , the codes have good auto-and crosscorrelation properties and errors occur only for the data bit "0" transmission.…”

Section: -D Ffh-ocdmamentioning

confidence: 99%

Next generation access networks: flexible OCDMA systems and cost-effective chaotic VCSEL sources for secure communications

Raddo¹

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Firstly, I would like to thank God for everything in life. I would like to thank my parents, Roberto Raddo and Abgail Raddo as well as my girlfriend Anne-Sophie for their constant support, love, encouragement, and total understanding during my long doctoral journey. I would like to thank Ben-Hur V. Borges, Heidi Ottevaere, Idelfonso T. Monroy, and Martin Virte for their contributions to my doctoral research as my academic advisors. I am grateful for their continuous guidance during this long and challenging path, for their helpfulness, confidence, and advice. Special thanks go to Hugo Thienpont and Heidi Ottevaere for the unique offered opportunity to develop part of the doctoral research in Brussels at B-PHOT. I would like to express my gratitude to my great friends: Israel Lot (thanks also for the book's cover), Larissa Lima (thanks also for helping me out so many times),

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Performance comparison of hybrid 1-D WDM/OCDMA and 2-D OCDMA towards future access network migration scenario

Cited by 13 publications

References 7 publications

An all‐optical OCDMA encoder with simultaneous signal regeneration based on fiber four‐wave mixing

An all‐optical OCDMA encoder with simultaneous signal regeneration based on fiber four‐wave mixing

Multiservice, multirate IP transmission over OCDMA network

Next generation access networks: flexible OCDMA systems and cost-effective chaotic VCSEL sources for secure communications

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