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IEEE Journal on Selected Areas in Communications

Issue 9 • Date Dec 1995

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Displaying Results 1 - 15 of 15
  • A quaternary partial-response class-IV transceiver for 125 Mbit/s data transmission over unshielded twisted-pair cables: principles of operation and VLSI realization

    Publication Year: 1995, Page(s):1656 - 1669
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1368 KB)

    The paper describes an experimental transceiver for full-duplex transmission at a rate of 125 Mbit/s over unshielded twisted-pair cables of ordinary voice-grade quality, intended for use in a fiber distributed data interface (FDDI) network. Quaternary partial-response class-IV (QPRIV) overall-channel signaling with near-end crosstalk (NEXT) cancellation and maximum-likelihood sequence detection is... View full abstract»

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  • Performance evaluation of a fast computation algorithm for the DMT in high-speed subscriber loop

    Publication Year: 1995, Page(s):1564 - 1570
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (656 KB)

    The discrete multitone (DMT) modulation is considered to be a viable transmission scheme for high-speed subscriber loop. In this paper, the fast algorithm for computing the equalizer settings derived in [1] is extended and applied for the DMT in high-speed subscriber loop. The channel pulse response is assumed to be given by the channel identification method, and then the equalizer filter settings... View full abstract»

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  • A 1.6 Mbps digital-QAM system for DSL transmission

    Publication Year: 1995, Page(s):1600 - 1610
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1228 KB)

    An all digital-QAM system is studied here for high-speed data transmission on digital subscriber loops. All elements of the system have been fully investigated and their effects on overall system performance documented. In particular, the following issues have been explicitly addressed: utility of an adaptive error-prediction (noise-prediction) filter; equalizer size and convergence; blind equaliz... View full abstract»

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  • Bandwidth-efficient digital transmission over unshielded twisted-pair wiring

    Publication Year: 1995, Page(s):1643 - 1655
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1124 KB)

    Describes techniques for achieving data rates up to 155 Mb/s over unshielded twisted-pair (UTP) wiring for local area network (LAN) applications in premises distribution systems. Duplex operation at these high data rates is achieved over two pairs of UTP wiring and with a bandwidth utilization that is less than 30 MHz, thus avoiding potential problems with radiation limits. The transmission scheme... View full abstract»

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  • Optimization of discrete multitone to maintain spectrum compatibility with other transmission systems on twisted copper pairs

    Publication Year: 1995, Page(s):1558 - 1563
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (644 KB)

    The growing demand to transmit high-speed digital data in many local area networks (LANs) and digital subscriber lines (DSLs) has resulted in a wide variety of transmission systems that have to co-exist on twisted wire copper pairs. In this paper, we address the problem of maintaining spectrum compatibility between various services that may use different transmission technologies, by shaping in an... View full abstract»

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  • Line code selection for 155.52 Mb/s data transmission on category 5 cable plant

    Publication Year: 1995, Page(s):1670 - 1683
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1472 KB)

    EMI/EMC is a dominant problem encountered in high bit-rate (>100 Mb/s) transmission over unshielded twisted-pair cable (UTP) which leads to a novel set of line-code dependent tradeoffs affecting transceiver and cable plant complexity. To understand the tradeoffs, the authors examined the factors affecting RF emissions and susceptibility in both trellis-configured cable plant models and installe... View full abstract»

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  • Overlapped discrete multitone modulation for high speed copper wire communications

    Publication Year: 1995, Page(s):1571 - 1585
    Cited by:  Papers (152)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1472 KB)

    Multicarrier modulation possesses several properties which make it an attractive approach for high speed copper wire communication networks. Among these properties are the ability to efficiently access and distribute multiplexed data streams, and a reduced susceptibility to impulsive, as well as to narrowband channel disturbances. In digital implementations of multicarrier modulation, subcarrier g... View full abstract»

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  • Coded 64-CAP ADSL in an impulse-noise environment-modeling of impulse noise and first simulation results

    Publication Year: 1995, Page(s):1611 - 1621
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1080 KB)

    This paper presents the performance of various coding schemes for the asymmetrical digital subscriber line (ADSL) in an impulse-noise environment. Impulse noise is considered to be one of the most damaging impairments in the ADSL, in which compressed video signals are delivered to residential customers. The impulse noise used in this study was measured and collected in German telephone networks. B... View full abstract»

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  • 100 Mb/s data transmission on UTP and STP cabling for demand priority networks

    Publication Year: 1995, Page(s):1684 - 1691
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (756 KB)

    There have been considerable advances towards higher speed (100 Mb/s) workgroup LANs which support the existing UTP and STP structured cabling utilized by 10 BASE-T and token ring LANs. The paper describes the transmission techniques used by an IEEE 802.12 demand priority network with UTP and STP structured cabling. The UTP transmission scheme supports categories 3-5 UTP (i.e. voice-grade and data... View full abstract»

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  • An OFDM scheme with a half complexity

    Publication Year: 1995, Page(s):1586 - 1599
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (904 KB)

    The paper deals with an OFDM (orthogonal frequency division multiplexing) system based on filter-bank architecture. The known implementation uses a DFT (discrete Fourier transform) processor and a polyphase network (PPN). Even if it is based on complex components, in the final step it operates the real part extraction of the incoming signal. This leads to redundant operations in the DFT processor ... View full abstract»

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  • Dynamics limited precoding, shaping, and blind equalization for fast digital transmission over twisted pair lines

    Publication Year: 1995, Page(s):1622 - 1633
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1412 KB)

    A new combined precoding/shaping technique for fast digital transmission over twisted pair lines is proposed. Major advantages of this “dynamics shaping” are: dynamics of the signal at the input of the decision device are reduced by a great amount. Thereby, A/D-conversion, adaptive equalization, and symbol timing are rather facilitated. A trade-off between signal dynamics at the transm... View full abstract»

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  • Digital subscriber line (HDSL and ADSL) capacity of the outside loop plant

    Publication Year: 1995, Page(s):1540 - 1549
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (944 KB)

    The fundamental limits of the outside loop plant to carry high-speed digital (bi-directional HDSL and ADSL) data are reported. The paper focuses on the copper wire pairs, drop lengths, and interconnects that convey data over the “last mile” to almost all businesses and residences in the US. The two major customers, businesses and households, are classified, characterized, and categoriz... View full abstract»

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  • A 100 Mb/s BiCMOS adaptive pulse-shaping filter

    Publication Year: 1995, Page(s):1692 - 1702
    Cited by:  Papers (11)  |  Patents (25)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1236 KB)

    With the growing demand for high-speed transmission of digital data, there is a challenge for utilizing the existing copper plant as the transmission medium, especially for short-hop links. This medium offers a lower cost to a fiber medium, but requires more sophisticated electronics to account for electromagnetic emissions, cross-talk, and cable loss. These include pulse shaping filters, cross-ta... View full abstract»

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  • ADSL and VADSL splitter design and telephony performance

    Publication Year: 1995, Page(s):1634 - 1642
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (936 KB)

    The effect of introducing ADSL and VADSL splitter filters into the telephony transmission system is discussed, first with passive filters and then with active filters. The advantages of the active approach are demonstrated through examples of both passive and active splitter designs. The discussion is prefixed by a review of telephony transmission in the access network, with particular emphasis on... View full abstract»

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  • Broadcast digital subscriber lines

    Publication Year: 1995, Page(s):1550 - 1557
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (688 KB)

    The adoption of asymmetrical digital subscriber lines (ADSL) technology in conjunction with the broadcast digital subscriber lines (BDSL) proposed in this paper could provide a cost effective solution for the introduction of digital video services in the near term. BDSL provides the same digital broadcast video programs to all subscribers through existing twisted pair telephone loops. In this pape... View full abstract»

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Aims & Scope

IEEE Journal on Selected Areas in Communications focuses on all telecommunications, including telephone, telegraphy, facsimile, and point-to-point television, by electromagnetic propagation.

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Meet Our Editors

Editor-in-Chief
Muriel Médard
MIT