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1999 IEEE International Conference on Personal Wireless Communications (Cat. No.99TH8366)

17-19 Feb. 1999

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  • 1999 IEEE International Conference on Personal Wireless Communications (Cat. No.99TH8366)

    Publication Year: 1999
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    Freely Available from IEEE
  • Wireless data networks: issues beyond the link layer

    Publication Year: 1999
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (50 KB)

    Summary form only given. The emergence of the WWW and the underlying Internet forever changed the way in which hundreds of millions of people access information and conduct online transactions. However, for the large part, this access requires fairly traditional computers and wired network access. Wireless network access and non-traditional handheld computing devices have the potential to increase... View full abstract»

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  • Wireless multimedia is reality today

    Publication Year: 1999
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    Summary form only given. Facing the challenge of tomorrow's information society we can already witness today the birth of mobile multimedia services such as speech, video, and data. GSM, the most widespread mobile wireless system today with over 100 million users worldwide, will offer rich possibilities to provide wideband wireless multimedia services. The emergence of high speed circuit switched ... View full abstract»

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  • Index of authors

    Publication Year: 1999, Page(s):506 - 507
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    Freely Available from IEEE
  • Performance issues in two-tier cellular networks

    Publication Year: 1999, Page(s):374 - 378
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    A two-tier cellular network consists of a number of small microcells overlayed by larger macro (umbrella) cells. Such a network can support improved quality of service (QoS), higher capacity, and larger coverage area than existing networks. In this work, we study the channel allocation problem for a two-tier cellular network for two types of calls (voice and data), under different degrees of hando... View full abstract»

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  • A layer 2 multicast with improved reliability over the TDMA cellular radio networks

    Publication Year: 1999, Page(s):24 - 28
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (364 KB)

    This paper proposes a class of layer 2 multicast protocols with improved transmission reliability over TDMA cellular radio networks. The improvement is achieved by utilizing ARQ in the multicast transmission stream. This paper is focused on the layer 2, i.e. the link level multicast. In this paper, the authors introduce an ARQ method, the so called modified round robin (MRR), which is throughput e... View full abstract»

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  • A minimum air interface implementation for software radio based on distributed object technology

    Publication Year: 1999, Page(s):369 - 373
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (784 KB)

    This paper presents a software implementation of the UCCH mobility signalling, based on distributed object technology. The system is based on the CORBA-compliant OrbixWeb (Fettweis et al, 1997) and the network nodes are defined as objects. The aim of this experimental setup has been to implement the UCCH signalling backbone, and the software-download signalling protocol. The UCCH implementation in... View full abstract»

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  • Broadcasting in large unicyclic communication networks

    Publication Year: 1999, Page(s):19 - 23
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    Broadcasting is the process of information dissemination in communication networks (modelled as graphs) whereby a message originating at one vertex becomes known to all members given that at each unit of time a vertex can pass the message to at most one of its neighbours. A broadcast graph on n vertices is a network in which messages can be broadcast in the minimum possible (=[log2n]) number of st... View full abstract»

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  • A VCT-based handover scheme for wireless ATM networks

    Publication Year: 1999, Page(s):433 - 435
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    A new handover scheme which can be used in virtual connection tree (VCT)-based wireless ATM networks is presented. In the new scheme, calls within the VCT which can cause loss of ATM cells or delay or overload on base stations are rejected. The scheme utilizes the full capacity of VCT. Performance evaluation of the scheme is presented through analytical and simulation results obtained with a simul... View full abstract»

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  • Software radio-an alternative for the future in wireless personal and multimedia communications

    Publication Year: 1999, Page(s):364 - 368
    Cited by:  Papers (6)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (508 KB)

    Software radio development aims at wideband RF access and software partitioning for plug-and-play type of use. The development is facilitated by progress in silicon capabilities, signal processing power of new and future processors and reconfiguration methods (software download, smart cards, etc.). However, there are still a lot of problems in implementing software radio. These problems include hi... View full abstract»

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  • Performance of a coherent BPSK receiver in an impulsive noise environment

    Publication Year: 1999, Page(s):471 - 475
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    The performance of a digital communication system in the ELF/VLF range operating in situations like a mine environment is strongly affected by atmospheric noise which has an impulsive component on a white Gaussian background. We analyze the bit-error-rate performance of a coherent BPSK receiver subject to such noise View full abstract»

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  • Study of the impact of non-uniform spatial traffic distribution on the system parameters of CDMA cellular networks

    Publication Year: 1999, Page(s):394 - 398
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    The analytical expressions for the main system parameters of a CDMA radio network for the different spatial patterns of non-uniform offered traffic distribution are derived. Analytical results agree with simulation results obtained with “NetSim” radio network simulator. The derived analytical expressions can be applied for the further development of CDMA radio network planning methods ... View full abstract»

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  • Characterization of mobility patterns based on cell topography in a cellular radio system

    Publication Year: 1999, Page(s):428 - 432
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (492 KB)

    Teletraffic modelling of users is crucial for cellular system layout and planning, and to evaluate tradeoffs in system design issues. In order to be useful, the model should capture mobility under the most generalized conditions. We develop models that incorporate general mobility patterns that are induced by the cell topography (e.g., road layout, street orientation, density of intersections). In... View full abstract»

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  • Using computer generated uniform random variables to generate PN like codes

    Publication Year: 1999, Page(s):296 - 298
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    Pseudo-noise (PN) sequences are generated using linear feedback shift registers (LFSR) or nonlinear feedback shift registers (NLFSR). These sequences can be reconstructed from a short segment of the code or a longer segment for the nonlinear case. Using one of the techniques of computer generated uniform random variables a random code (RC) can be generated with the properties of well behaved autoc... View full abstract»

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  • Signalling and mobility management in wireless ATM networks

    Publication Year: 1999, Page(s):501 - 505
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    This paper reviews the signalling and mobility management issues in wireless ATM networks and explains how some of those issues are addressed in the Wireless ATM Research Project (WARP) (Acharya and Raychaudhury, 1996) using a new approach to network signalling called open signalling (Acharya et al., 1997) View full abstract»

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  • A system architecture for mobile broadband access using wireless ATM

    Publication Year: 1999, Page(s):274 - 278
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    We present a system level architecture for supporting mobility in an ATM-based wireless personal communication network (PCN). The proposed architecture uses a networking scheme based on intelligent, multicast-based trees with distributed mobility management and predictive resource allocation at the base stations. The addressed functionalities include connection admission, location management and t... View full abstract»

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  • The corDECT wireless local loop: capacity predictions

    Publication Year: 1999, Page(s):359 - 363
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (428 KB)

    The traditional wired local loop used to connect telephone subscribers to the nearest exchange is expensive and unreliable. Wireless local loop (WLL) systems largely eliminate these copper wires using wireless technologies and could provide a cost effective solution. CorDECT is one such WLL system, based on the DECT (Digital Enhanced Cordless Telecommunications) standard, that provides toll-qualit... View full abstract»

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  • Discrete multitone modulation with least squares inverse channel filtering

    Publication Year: 1999, Page(s):467 - 470
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    ADSL (asymmetric digital subscriber line) transmission technology meets Internet access requirement quite well and offers telephone companies a technology for connecting virtually all Internet users at megabit rates. The ANSI (American National Standards Institute) proposes discrete multitone (DMT) modulation with DFT (discrete Fourier transform) bases as the carriers for the ADSL system. Recently... View full abstract»

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  • Joint demodulation and iterative multi-user decoding for SFH/SSMA networks

    Publication Year: 1999, Page(s):198 - 203
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    We study the problem of multiuser detection in the context of slow frequency hop spread spectrum multiple access (SFH/SSMA) systems. In particular, we study the demodulation and decoding aspects of multiuser reception for SFH/SSMA and propose methods which improve the capacity of the system. In particular, we propose and evaluate the joint demodulation of multiple symbols (defined as `type') and t... View full abstract»

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  • Performance evaluation method of cellular networks with retrial

    Publication Year: 1999, Page(s):389 - 393
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    In cellular mobile communication networks, a proper modeling of call behavior is essential for network planning. Due to the increase of calls and network complexity, the retrial phenomenon may have a significant impact on the network performance. We focus on the effect of the call retrial phenomenon in a cellular mobile network. We formulate the dynamics of each cell as a three-dimensional Markov ... View full abstract»

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  • Spectrum allocation in 2 GHz band with easy transition to IMT-2000 (3G) mobile services in India

    Publication Year: 1999, Page(s):289 - 295
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    This paper describes some strategies and issues for introduction of new services especially in the 2 GHz spectrum in India with a view to transition to 3G (IMT2000) in future. For India not having licensed the 2GHz band to private operators so far is perhaps a blessing especially from the possible connects to IMT-2000 services in future. In that sense the IMT-2000 allocated bands could be reserved... View full abstract»

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  • Adaptive transmission control for CDMA slotted-ALOHA systems in a Rayleigh fading environment

    Publication Year: 1999, Page(s):174 - 178
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB)

    This paper proposes an adaptive transmission control scheme for CDMA cellular slotted-ALOHA systems. This scheme adaptively controls the target received power and the processing gain according to both channel load and location of the mobile station. Computer simulation validates the effectiveness of this scheme: the capture effect can be achieved under heavy channel loads, and therefore, throughpu... View full abstract»

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  • Caching in hierarchical user location databases for PCS

    Publication Year: 1999, Page(s):496 - 500
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB)

    Mobility management architectures for future generations of PCS systems have been proposed where multiple location databases, organized in a tree, are used to cope with the large number of users. We have previously proposed the use of caching as an auxiliary strategy for reducing the network impacts of locating mobile users in a tree-structured architecture. In this paper we quantify the costs and... View full abstract»

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  • A scalable mobile network with distributed micro-switches in the base stations

    Publication Year: 1999, Page(s):269 - 273
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    This paper proposes a scalable distributed micro-switching network, possibly integrating mobile and fixed services. The traditional centralized switches are replaced with an access network consisting of small on-chip micro-switches distributed throughout the network. The micro-switches are located in the base-stations for the mobile part of the network. A cell-based common channel signaling system... View full abstract»

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  • Radio link configurations of broadband wireless access system

    Publication Year: 1999, Page(s):354 - 358
    Cited by:  Papers (1)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    Radio link configurations of broadband wireless access systems are discussed to give a perspective of the different systems. First point-to-point and point-to-multipoint systems are compared to see in what situations the latter has the advantage over the former. Then the configurations of up- and downlinks of the point-to-multipoint systems are classified and compared to one another. Finally the p... View full abstract»

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