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IEEE Network

Issue 2 • Date March 1989

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Displaying Results 1 - 5 of 5
  • Non-coherent photonic frequency-multiplexed access networks

    Publication Year: 1989, Page(s):4 - 12
    Cited by:  Papers (27)  |  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (737 KB)

    Noncoherent WDMA/FDMA (wavelength-division multiaccess/frequency-division multiaccess) networks that use tunable filters to select channels are considered. They have the same sensitivity as direct-detection networks, which is about 10 dB less than coherent networks. However, the noncoherent networks are much less complicated, which makes them interesting for multiaccess applications, where cost is... View full abstract»

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  • Frequency division multiplexed optical networks using heterodyne detection

    Publication Year: 1989, Page(s):13 - 20
    Cited by:  Papers (18)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (709 KB)

    The optical heterodyne process is described. Because the best attainable system gain (transmitter power divided by receiver sensitivity) is only about 50 dB for lightwave systems, as compared with values approaching 100 dB at radio frequencies, it is extremely important in building an optical network (such as a local area network, or LAN) to minimize excess tap losses. It is shown that a star coup... View full abstract»

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  • Combining frequency-division and code-division multiplexing in a high-capacity optical network

    Publication Year: 1989, Page(s):21 - 30
    Cited by:  Papers (30)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (909 KB)

    The combination of frequency division and code division multiplexing in a multiaccess network such that the beneficial aspects of each technique mitigate the shortcomings of the other is addressed. The feasibility and expected performance of the resulting hybrid network are examined. CDMA (code-division multiple access) is used to eliminate the need for laser frequency control, which is required f... View full abstract»

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  • Emerging optical code-division multiple access communication systems

    Publication Year: 1989, Page(s):31 - 39
    Cited by:  Papers (70)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (725 KB)

    All-optical systems, which perform signal processing functions optically so that the signal conversion from optical to electrical is done only when desired, are considered. Three such schemes are discussed, namely, fiber-optic code-division multiple-access (CDMA) systems, neuromorphic CDMA systems, and ultrashort-light-pulse CDMA systems. Fiber-optic CDMA systems in which incoherent optical signal... View full abstract»

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  • Network, transport, and switching integration for broadband communications

    Publication Year: 1989, Page(s):40 - 51
    Cited by:  Papers (15)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (966 KB)

    It is shown how the development of technologies causes shifts in the relative use of space-, time-, and frequency-division multiplexing. Novel and integrated versions of these for integrated optical networks are examined. Synchronous and asynchronous transfer nodes are defined and discussed. The use of fixed-length and variable-length packets is considered. Mechanisms of switching in the space, ti... View full abstract»

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Aims & Scope

As currently defined, IEEE Network covers the following areas: 1. network protocols and architectures, 2. Protocol design and validation, 3. Communication software and its development and test, 4. Network control and signalling, 5. network management, 6. Practical network implementations including local area networks, (LANs), metropolitan area networks (MANs), and wide  area networks, (WANs), 7. Switching and processing in integrated (voice/data) networks and network components, 8. Micro-to-host communication.

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Editor-in-Chief

Neil Kato
Tohoku University, Japan
kato@it.is.tohoku.ac.jp