1998 International Zurich Seminar on Broadband Communications. Accessing, Transmission, Networking. Proceedings (Cat. No.98TH8277)

17-19 Feb. 1998

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  • 1998 International Zurich Seminar on Broadband Communications. Accessing, Transmission, Networking. Proceedings (Cat. No.98TH8277)

    Publication Year: 1998
    Request permission for commercial reuse | PDF file iconPDF (227 KB)
    Freely Available from IEEE
  • Author index

    Publication Year: 1998, Page(s): 307
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    Freely Available from IEEE
  • Mobility management for wireless CATM networks

    Publication Year: 1998, Page(s):299 - 306
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (788 KB)

    A frame-structure, referred to as wireless CATM (CATV ATM) network, is introduced to provide multimedia communication to mobile terminals. The widespread CATV (community antenna TV) networks are attractive infrastructures for next generation wireless networks. Also, providing interactive broadband services over CATV networks is a big trend in communication and ATM (asynchronous transfer mode) netw... View full abstract»

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  • A CORBA based architecture for QoS-sensitive networking

    Publication Year: 1998, Page(s):201 - 208
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (656 KB)

    We describe an architecture, based on the common object request broker architecture (CORBA), for the communication support of quality of service (QoS) sensitive networked multimedia applications. Shared by both control and management entities, this architecture smoothly integrates real-time QoS oriented communication services, such as those offered now or planned for the future in the public netwo... View full abstract»

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  • On the mobile radio capacity increase through SDMA

    Publication Year: 1998, Page(s):293 - 297
    Cited by:  Papers (9)  |  Patents (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB)

    In a cellular mobile radio system an SDMA component can be implemented for the reuse of radio channels physically incorporated by time, frequency or code slots. In this paper we will present simulation results on an SDMA downlink channel allocation scheme operating in a typical urban mobile radio cell. Based on the resulting blocking probabilities we will give estimations on the capacity increase ... View full abstract»

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  • Construction of binary almost perfect sequences based on extended cyclic difference sets

    Publication Year: 1998, Page(s):243 - 248
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    Sequences with noise-like characteristics are required for symbol synchronization, signal detection, signal estimation, spectrum spreading and secrecy coding. Periodic binary sequences exhibiting zero out-of-phase autocorrelation except one value in the middle are studied here. They are based mainly on cyclic difference sets D with parameters (v,k,λ), where k denotes the number of elements ... View full abstract»

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  • Call control in the mobile terminal of a wireless ATM network

    Publication Year: 1998, Page(s):135 - 141
    Cited by:  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (764 KB)

    In the frame of the Research and Development Programme ACTS (advanced communications technologies and services) of the European Union, a high-speed indoor Wireless ATM (asynchronous transfer mode) access network is being investigated in the project “Wireless ATM Network Demonstrator (WAND)”. The main objective of the project WAND is to support integrated multimedia services with QoS (q... View full abstract»

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  • TDMA-based broadband fixed radio access: performance and implementation issues of adaptive equalizers

    Publication Year: 1998, Page(s):193 - 200
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (656 KB)

    The performance of adaptive equalization strategies for future broadband fixed ATM radio access systems is investigated. The LMS and zero forcing algorithms are suitable for the downlink, whereas for the uplink, a fast converging RLS algorithm has to be employed. Furthermore, a hybrid F/TDMA has to be implemented to transmit the assumed 156 Mbit/s in the uplink. A complexity analysis comparing dif... View full abstract»

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  • The effects of phase noise on 26 Mb/s OFDMA broadband radio in the local loop systems

    Publication Year: 1998, Page(s):105 - 112
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB)

    The effects of phase noise on broadband radio in the local loop (BRITL) systems employing orthogonal frequency division multiple access (OFDMA) are assessed analytically and numerically. Phase noise causes a common phase error (CPE) and inter-carrier interferences (ICI). The former is easy to estimate and equalize, since it identically affects all subcarriers. It is shown that neither a significan... View full abstract»

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  • Scattering function in delay and Doppler induced by motion in a dense multipath environment

    Publication Year: 1998, Page(s):165 - 169
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB)

    The delay spread profile for a dense multipath environment, modeled as a wide sense stationary uncorrelated scatterers (WSSUS) channel, has recently been derived for stationary transmitter-receiver pairs. The result shows the dependence of the profile on transmitter-receiver distance. In this paper we extend the analysis to the case that this distance is changing at constant velocity, inducing dif... View full abstract»

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  • Coverage of macrocellular multicarrier joint detection code division multiple access (MC/JD-CDMA)

    Publication Year: 1998, Page(s):285 - 292
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (644 KB)

    Owing to the limited transmit powers of mobiles, the coverage of macrocellular radio systems is governed by the uplink. In this communication, the coverage of a macrocellular radio system deploying the recently proposed multicarrier joint detection code division multiple access (MC/JD-CDMA) is analyzed. We set out from the uplink minimally allowed mean received power Pe, min which is re... View full abstract»

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  • A new flow control scheme for integrated ATM services

    Publication Year: 1998, Page(s):219 - 224
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    A new synchronous flow control scheme for integrated ATM services using explicit rate indications (SER) is proposed in this paper. The presented scheme allocates bandwidth fairly, efficiently and rapidly. The rate of an available bit rate (ABR) source in the SER scheme goes up monotonously with time. By introducing virtual nodes, the transient durations experienced by ABR connections can further b... View full abstract»

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  • Analysis of protocol sequences for slow frequency hopping

    Publication Year: 1998, Page(s):237 - 242
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB)

    Decoding error probability bounds are derived for slow frequency hopping schemes. For unslotted asynchronous multiple access random protocol sequences with interleaved codes are considered. Nonrandom constructions of protocol sequences with good cyclic correlation properties are given. For slotted access the maximum and average Hamming correlation properties of these protocol sequences imply error... View full abstract»

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  • Resource management techniques applied to satellite communications networks

    Publication Year: 1998, Page(s):1 - 8
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (748 KB)

    Efficient resource management is mandatory to achieve maximum system capacity for the next generation communications systems. Resource management deals with the available spectral band, time, power, and space for a transmission signal. It includes (i) the frequency planning and (ii) the assignment of transmission resources to users. The paper presents a generalized notation as well as graph algori... View full abstract»

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  • Optical millimeter-wave systems for broadband mobile communications, devices and techniques

    Publication Year: 1998, Page(s):51 - 58
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (812 KB)

    Future mobile communication systems have to meet the demands of broadband services. The 60 GHz-range is proposed for the radio link frequency in these cellular systems. The combination of optical techniques and millimeter-wave techniques at these frequencies is a promising approach for cost-effective network implementation. Besides the low-loss fiber-based data transmission, this combination allow... View full abstract»

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  • B-ISDN interconnection of a WATM demonstrator

    Publication Year: 1998, Page(s):127 - 134
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (916 KB)

    The interconnection of a wireless ATM (WATM) system with the fixed B-ISDN is a demanding task in order to bring B-ISDN services to mobile users. In this paper we present the network protocols as developed in the ACTS SAMBA project and realised in its demonstrator. The procedures for mobility, radio resource management and access to the B-ISDN will be discussed in detail. A protocol for network han... View full abstract»

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  • Efficient equalization of discrete wavelet multi-tone over twisted pair

    Publication Year: 1998, Page(s):185 - 191
    Cited by:  Papers (5)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    In this paper, we examine the efficacy of different equalization schemes for discrete wavelet multi-tone (DWMT) with relatively high average bandwidth efficiency (6 bps/Hz). Using simulated bit error rate (BER) performance results, we demonstrate that the sensitivity of DWMT to small amounts of distortion in the end-to-end channel makes it infeasible to use only FIR filtering at the DWMT receiver ... View full abstract»

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  • Broadband transmission using OFDM: system performance and receiver complexity

    Publication Year: 1998, Page(s):99 - 104
    Cited by:  Papers (19)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (608 KB)

    This paper investigates the system performance of coherent OFDM transmission over frequency selective fading channels taking into account the constraints imposed by the receiver complexity. The effects of synchronization errors in the receiver are analyzed. In a properly designed inner receiver, these errors lead to extra noise. Specifying the limits for this additional noise allows one to derive ... View full abstract»

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  • Influence of polarization on 30 GHz broadband radio channels

    Publication Year: 1998, Page(s):159 - 164
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (516 KB)

    “Radio in the Local Loop” for ATM transmission is expected to become economically important if transmission channels prove to be sufficiently well behaved. Using a PRBS channel sounder we have measured channel impulse responses at 29.940 GHz with a 5 ns temporal resolution for distances up to 3.8 km. We have further investigated the influence of polarization on fading and delay spread.... View full abstract»

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  • Protocols for a wireless-ATM multihop network

    Publication Year: 1998, Page(s):75 - 82
    Cited by:  Papers (4)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (812 KB)

    A medium access control protocol for a wireless multihop network is described and evaluated. The network is able to guarantee the bandwidth contracted to a connection in a hidden station environment and to most efficiently use the spectrum capacity by providing a mechanism for dynamic channel allocation to services. Both channel and packet switched services are supported, based on real channel con... View full abstract»

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  • Performance of a random OFDMA system for mobile communications

    Publication Year: 1998, Page(s):37 - 43
    Cited by:  Papers (5)  |  Patents (37)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB)

    In this paper we consider the uplink performance of an OFDMA (orthogonal frequency division multiple access) system for mobile communications. We describe the random OFDMA system which is based on MC-FDMA (multicarrier FDMA), and where each user has a set of randomly selected subchannels. We also analyze the problem of block synchronization in an OFDM transmission. Then we describe three different... View full abstract»

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  • Realizing the benefits of virtual LANs by using IPv6

    Publication Year: 1998, Page(s):279 - 283
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    The benefits that virtual LANs offer can also be realized by using features of an IPv6 network together with the small enhancements to the IPv6 and DHCPv6 protocol stacks outlined in the present paper. The aim is to create complex network structures without a special layer 2 infrastructure. This proposal can be also applied to IPv4 networks wherein multicasting a DHCP is available View full abstract»

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  • Dimensioning of play-out buffers for real time services in a B-ISDN

    Publication Year: 1998, Page(s):209 - 218
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (996 KB)

    A large fraction of traffic that the future B-ISDN will probably transport is made up of real-time services with stringent delay and delay jitter requirements. Since ATM networks do not provide time transparent links, a delay equalisation has to be provided in the adaptation layer or in user equipment. In this paper we first propose an analytical model that allows the evaluation of the end-to-end ... View full abstract»

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  • Hard and soft decision decoding of phase rotation invariant block codes

    Publication Year: 1998, Page(s):249 - 251
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (192 KB)

    We consider a binary discrete channel with phase inversion and with random errors. Such a channel is a cascade of two channels. We also consider a continuous channel with phase inversion. For both channels, we wish to correct a phase inversion error when it occurs as well as random errors. For this purpose, we introduce a special metric to describe combinations of these errors. We call this metric... View full abstract»

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  • QoS support in wireless access networks

    Publication Year: 1998, Page(s):143 - 147
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    Wireless access networks are evolving towards mobile multimedia support with QoS (quality of service) provision. While this trend is clearly seen, a relation into the fixed network evolution and the second generation wireless systems has to be kept in mind. This paper gives an overview on application demand for the new mobile multimedia services and fixed network evolution to support QoS. Two scen... View full abstract»

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