A Generalization of a Coherence Multiplex System

Arjan Meijerink, G.H.L.M. Heideman, Wim van Etten

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    Coherence multiplexing is a relatively unknown form of a CDMA-system, especially used in access networks for optical communication systems. Usually a coherence multiplex system uses delay-filters at the transmitter and at the receiver to perform the code. In this paper, an extension to other filter types is described. The performance, in terms of the signal-to-noise ratio, can be calculated. The result is a simple expression in which only the bit-time, the coherence-time of the source and the number of simultaneous users is involved. With the use of a continuous source, the signal to noise ratio will be proportional to the inverse of the square of the number of simultaneous users. Such a system is in fact a spectral code system. Further extension will be made with the use of a pulsed source and by replacing the filters in the previous case by a bank of filters. Each element of that filter bank also has a delay, different for each element, included. It will be shown that in that case the signal-to-noise ratio can be made proportional to the inverse of the number of users instead of the square of the number of users, which means an important improvement with respect to the number of users that can be handled. This system can be named a spectro-temporal code system
    Original languageUndefined
    Title of host publicationIEEE Symposium on Communcations & Vehicular Technology 2000
    Place of PublicationLeuven, Belgium
    Number of pages8
    ISBN (Print)9780780366848
    Publication statusPublished - 19 Oct 2000
    EventIEEE Symposium on Communcations & Vehicular Technology, SCVT - Leuven, Belgium
    Duration: 19 Oct 200019 Oct 2000

    Publication series



    ConferenceIEEE Symposium on Communcations & Vehicular Technology, SCVT
    Other19 October 2000


    • IR-16369
    • METIS-113254

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