Capacity of coherence-multiplexed CDMA networks

Pendock, G.J.; Sampson, David D.

doi:10.1016/s0030-4018(97)00340-4

Cited by 23 publications

(21 citation statements)

References 20 publications

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“…After [38] thorough analysis of the problem [41] and a performance analysis for CDMA [42], and with Rob, we wrote an invited review of the field in the same year [38] and then let it go. History would suggest we made a sensible choice because the technique has not made a mark in optical communications in the intervening years.…”

Section: The Photonics Research Laboratory the University Of Melbournementioning

confidence: 99%

“…The next two years were spent, firstly, clearing the pipeline of research in communications [25,41,42,48,49,51,54,56], including our CDMA review [38]. Secondly, the lab was established in 1997 -including a generous donation of equipment from the closure of the Telstra Research Labs in Melbourne, through the generosity of Rob Ayr.…”

Section: The University Of Western Australiathe Optical+biomedical Enmentioning

confidence: 99%

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Staying coherent after kent: From optical communications to biomedical optics

Sampson

2011

Photonic Sens

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In this paper, an overview of author's research is presented, commencing at the University of Kent under Prof. David A. Jackson. Early research in short optical pulses and fiber-optic delay-line digital correlators led to optical communications research in code-division multiple access networking. This research was based on broadband incoherent light, and this theme continued with research into spectrum-sliced wavelength-division multiplexing. In shifting from photonics research to biomedical optics and biophotonics in the late 1990s, the emphasis on exploiting broadband light continued with research in optical coherence tomography, amongst other topics. In addition to the research outcomes, how these outcomes were attained is described, including mention of the exceptional contributions of many of my colleagues.

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Section: The Photonics Research Laboratory the University Of Melbournementioning

confidence: 99%

Section: The University Of Western Australiathe Optical+biomedical Enmentioning

confidence: 99%

Staying coherent after kent: From optical communications to biomedical optics

Sampson

2011

Photonic Sens

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“…It can be verified that no PM-IM conversion occurs when T Rx − T Tx is much larger than τ c , so the relation between the PDDs in transmitter and receiver determines whether the corresponding coherence-modulated channel is demodulated or not. Optical detection is assumed to be performed by a balanced photodiode pair, as it can be shown to result in a superior OBI noise performance compared to direct detection [9], [10]. Cielo and Delisle also proposed how several coherencemodulated channels can be multiplexed in a common optical transmission fiber, by cascading multiple coherence modulators and using a common optical source [2].…”

Section: Introductionmentioning

confidence: 99%

Coherence Multiplex System Topologies

Meijerink

Taniman

Heideman

et al. 2007

IEEE J. Select. Topics Quantum Electron.

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Coherence multiplexing is a potentially inexpensive form of optical code-division multiple access, which is particularly suitable for short-range applications with moderate bandwidth requirements, such as access networks, LANs, or interconnects. Various topologies are known for constructing an optical transmission system in which several channels are coherence-multiplexed in one optical fiber. In this paper, the parallel array, the intrinsic reference ladder (IRL), and the discontinuous series system topologies will be further considered and compared with respect to code orthogonality requirements, theoretical performance, and some practical implementation aspects. A modification to the IRL system is proposed, resulting in a significant improvement in the theoretical performance.Index Terms-Coherence multiplexing (CM), noise analysis, optical code-division multiple access (OCDMA), optical communication, optical network topologies.

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“…Therefore, more severe system performance degradation and error floors result [1][2][3]. Most optical systems are prone to IN, for example, wavelength division multiplexing (WDM) [4,5], time-division multiplexing (TDM) [6,7], subcarrier multiplexing [8,9], and OCDMA [10][11][12][13][14][15][16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

“…The first study of beat noise in OCDMA systems was performed for spectral amplitude coding (SAC) schemes employing broadband optical sources [10]. Subsequently, several studies have considered beat noise in estimating the performance of different OCDMA systems; frequency encoding (FE) [10][11][12], frequency hopping (FH) [13], sequence-inversion keyed (SIK) [14], and coherence multiplexing (CM) [15]. Generally, the level of beat noise is found to be proportional to the square of light intensity multiplied by the ratio of the electrical to optical bandwidth.…”

Section: Introductionmentioning

confidence: 99%

Interferometric noise characterization of a 2-D time-spreading wavelength-hopping OCDMA network using FBG encoding and decoding

et al. 2007

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The results of a range of experimental characterization exercises of interferometric noise for the case of a representative 2-D time-spreading wavelength-hopping optical code family are presented. Interferometric noise is evaluated at a data rate of 2.5 Gbits/s within an OCDMA network emulation test bed established utilizing fiber Bragg grating encoders/decoders. The results demonstrate that this form of noise introduces significant system power penalties and must be taken into consideration in any OCDMA network designs and implementations

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Capacity of coherence-multiplexed CDMA networks

Cited by 23 publications

References 20 publications

Staying coherent after kent: From optical communications to biomedical optics

Staying coherent after kent: From optical communications to biomedical optics

Coherence Multiplex System Topologies

Interferometric noise characterization of a 2-D time-spreading wavelength-hopping OCDMA network using FBG encoding and decoding

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