1.25 Gbit/s transmission of optical FFH-OCDMA signals over 80 km with 16 users

Jaafar, Hind; LaRochelle, Sophie; Cortes, P.-Y.; Fathallah, Habib

doi:10.1364/ofc.2001.tuv3

Cited by 10 publications

(7 citation statements)

References 9 publications

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“…If the latter does not respond, the receiving station returns to its initial state m. Consequently, the rate in a packet network will be L(() R, = Xb Rn, (bi'ts/see) Fig. 3 illustrates an example of the overlapping process in a packet time slot. In this example, the packet length is L = 2, and the PG is G = 5.…”

Section: Packet Correct Probabilitymentioning

confidence: 99%

“…Asynchronous optical code division multiple-access (OCDMA) has gained more interest recently [1]- [3] due to its excess bandwidth that offers to serve the ever-increasing network dimension, especially in the presence of diverse multimedia traffics in today's communication systems. This, in turn, requires more complex control mechanism to handle the flow of information in such network [4].…”

Section: Introductionmentioning

confidence: 99%

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MAC Protocols for Multirate OV-CDMA System in Optical Packet Network: a comparative Approach

Inaty

Raad

Fortier

et al. 2007

2007 IEEE International Conference on Signal Processing and Communications

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In this paper, we compare the performance of two newly proposed MAC protocols for multirate optical CDMA (OCDMA) networks. The first protocol is the S-ALOHA/OFFH-CDMA and the second is the R3T/OFFH-CDMA. The main subject in this proposal is to exploit the potential of the optical fast frequency hopping CDMA using fiber-Bragg grating when jointly used with two different MAC protocols in a link layer as an effective way of integrating multirate traffic. The system throughput and the average packet delay are compared for both systems. It is shown that the S-ALOHA is better than the R3T when the user's activity and the offered load are high while the R3T is better for smaller values. Both protocols can be competitive in terms of the system throughput with the advantage is for the R3T protocol at moderate offered load. However, the R3T protocol suffers a higher delay mainly because of the presence of additional modes.

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Section: Packet Correct Probabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

MAC Protocols for Multirate OV-CDMA System in Optical Packet Network: a comparative Approach

Inaty

Raad

Fortier

et al. 2007

2007 IEEE International Conference on Signal Processing and Communications

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“…Using some dispersion compensating devices is one of the solutions [4], but it is not cost-effective to add extra components.…”

Section: O Ptical Code Division Multiplexing (Ocdm)mentioning

confidence: 99%

Experimental Study on Time-Spread/Wavelength-Hop Optical Code Division Multiplexing With Group Delay Compensating En/Decoder

Tamai

Iwamura

Minato

et al. 2004

IEEE Photon. Technol. Lett.

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10-Gb/s time-spread/wavelength-hop optical code generation and decoding were performed by group delay compensating fiber Bragg grating (FBG) en/decoder pair. A 10-km single-mode fiber (SMF) transmission of 10-Gb/s optical code division multiplexing (OCDM) was experimentally demonstrated. Index Terms-Optical code division multiple access (CDMA), optical fiber communications, optical fiber devices, optical networks.

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“…Among the recently proposed approaches to implement OCDMA, a novel technique using fiber Bragg grating arrays for simultaneous time and frequency encoding/decoding was proposed and studied theoretically and experimentally [2][3] . Although this fast frequency-hopping optical CDMA (FFH-OCDMA) is based on unipolar codes, the two-dimensional coding space offers great flexibility and increased spectral efficiency compared to direct sequence approaches [4] .…”

Section: Introductionmentioning

confidence: 99%

“…OCDMA systems performing frequency encoding must have a broadband optical source, either an incoherent source [2][3] or a short pulse laser source [5][6][7] . Incoherent broadband sources present the advantage of lower cost, at the expense of a lower power spectral efficiency.…”

Section: Introductionmentioning

confidence: 99%

Comparison of BER measurements in a FFH-OCDMA system with incoherent and coherent sources

Wei¹,

Slavı́k²,

Magné³

et al. 2003

SPIE Proceedings

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Bit error rate (BER) performance comparison in a FFH-OCDMA system with incoherent and coherent optical sources is performed by using a superfluorescent fiber source as an incoherent source and a single-mode multiwavelength fiber laser as a coherent source. Experimental results show that, the power penalty associated with the beat noise is approximately 1 dB. A measurement of the beat noise RF spectrum, with a matched encoder/decoder pair, is also performed and compared to numerical calculations.

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1.25 Gbit/s transmission of optical FFH-OCDMA signals over 80 km with 16 users

Cited by 10 publications

References 9 publications

MAC Protocols for Multirate OV-CDMA System in Optical Packet Network: a comparative Approach

MAC Protocols for Multirate OV-CDMA System in Optical Packet Network: a comparative Approach

Experimental Study on Time-Spread/Wavelength-Hop Optical Code Division Multiplexing With Group Delay Compensating En/Decoder

Comparison of BER measurements in a FFH-OCDMA system with incoherent and coherent sources

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