Optical S-ALOHA/CDMA systems for multirate applications: architecture, performance evaluation, and system stability

Raad, Robert; Inaty, Elie; Fortier, Paul; Shalaby, Hossam M. H.

doi:10.1109/jlt.2006.872684

Cited by 18 publications

(4 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The input power at the passive star coupler is split and transmitted equally among all J-class users. Normally, in a slotted packet network the time is divided into equal slots, where each user transmits at the beginning of a slot [36]. Without loss of generality, deleterious sources such as channel impairments and time jitter are neglected since the main focus is on the MAI between the users' codes.…”

Section: Multiservice Multirate Packet Network Descriptionmentioning

confidence: 99%

“…In the analysis the following assumptions are made: 1) Different users' classes coexist in the same time slot, where packet transmission errors can occur due to MAI, 2) the transmitter can independently determine the success of a packet transmission, and schedule a packet for retransmission when it is received with errors, and 3) the overhead required by error detection techniques at the receiver is neglected for the sake of simplicity [30]. In addition, the S-ALOHA protocol is employed to provide medium access control in the MAC layer [33], [36] and the network transmits on-off pulses employing on-off keying (OOK) modulation.…”

Section: Multiservice Multirate Packet Network Descriptionmentioning

confidence: 99%

“…Notice further that the bit period of class-3 (T j¼3 , and consequently L 3 ) is twice as long as the bit period of class-1 (T j¼1 , and consequently L 1 ). Accordingly, class-3 transmits half the amount of bits of class-1 while keeping the same packet period ðT p Þ for both classes [36], [41]. On the other hand, class-2 transmits one bit more than does class-3 (…”

Section: Multiservice Multirate Packet Network Descriptionmentioning

confidence: 99%

See 2 more Smart Citations

Throughput Performance Evaluation of Multiservice Multirate OCDMA in Flexible Networks

et al. 2016

View full text Add to dashboard Cite

In this paper, new analytical formalisms to evaluate the packet throughput of multiservice multirate slotted ALOHA optical code-division multiple-access (OCDMA) networks are proposed. The proposed formalisms can be successfully applied to 1-D and 2-D OCDMA networks with any number of user classes in the system. The bit error rate (BER) and packet correct probability expressions are derived, considering the multiple-access interference as binomially distributed. Packet throughput expressions, on the other hand, are derived considering Poisson, binomial, and Markov chain approaches for the composite packet arrivals distributions, with the latter defined as benchmark. A throughput performance evaluation is carried out for two distinct user code sequences separately, namely, 1-D and 2-D multiweight multilength optical orthogonal code (MWML-OOC). Numerical results show that the Poisson approach underestimates the throughput performance in unacceptable levels and incorrectly predicts the number of successfully received packets for most offered load values even in favorable conditions, such as for the 2-D MWML-OOC OCDMA network with a considerably large number of simultaneous users. On the other hand, the binomial approach proved to be more straightforward, computationally more efficient, and just as accurate as the Markov chain approach.

show abstract

Section: Multiservice Multirate Packet Network Descriptionmentioning

confidence: 99%

Section: Multiservice Multirate Packet Network Descriptionmentioning

confidence: 99%

Section: Multiservice Multirate Packet Network Descriptionmentioning

confidence: 99%

See 1 more Smart Citation

Throughput Performance Evaluation of Multiservice Multirate OCDMA in Flexible Networks

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Accordingly, class-3 transmits half the number of bits of class-1 while keeping the same packet period ( ) for both classes [104], [105]. On the other hand, class-2 transmits one bit more than does class-3 ( = 2 = 3, refer to (3.30)) because =2 (and consequently 2 ) is smaller than =3 (and consequently 3 ) while keeping the same packet period ( ).…”

Section: Packet Throughputmentioning

confidence: 99%

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

Raddo¹

View full text Add to dashboard Cite

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),

show abstract

A Unified Framework of the Performance Evaluation of Optical Time-Wavelength Code-Division Multiple-Access Systems

Inaty

2009

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering

View full text Add to dashboard Cite

Optical S-ALOHA/CDMA systems for multirate applications: architecture, performance evaluation, and system stability

Cited by 18 publications

References 15 publications

Throughput Performance Evaluation of Multiservice Multirate OCDMA in Flexible Networks

Throughput Performance Evaluation of Multiservice Multirate OCDMA in Flexible Networks

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

A Unified Framework of the Performance Evaluation of Optical Time-Wavelength Code-Division Multiple-Access Systems

Contact Info

Product

Resources

About