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Personal, Indoor and Mobile Radio Communications, 2000. PIMRC 2000. The 11th IEEE International Symposium on

Date 18-21 Sept. 2000

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  • The 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC 2002 [front matter]

    Publication Year: 2000, Page(s):i - xxxiii
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    Freely Available from IEEE
  • Multi-sensor reception for TDD-UMTS mobile terminal in indoor and pedestrian environments

    Publication Year: 2000, Page(s):1221 - 1225 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    In the downlink TD/CDMA multiple access scheme through a multipath channel, the use of a short complex code enables a strategy of multi-user detection with great sensibility improvement compared to the traditional matched filter. Nevertheless, the performances are damaged compared to the situation with an ideal channel, more especially as the number of users increases. In this paper, we first use ... View full abstract»

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  • Authors index

    Publication Year: 2000, Page(s):1604 - 1608
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    Freely Available from IEEE
  • Low-rate convolutionally encoded time-hopping spread spectrum multiple access systems

    Publication Year: 2000, Page(s):1555 - 1558 vol.2
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB)

    We propose to use a practical low rate error-correcting code in a time-hopping spread spectrum multiple access system employing a binary PPM signaling. To this end, superorthogonal codes, which are near optimal and have relatively low implementation complexity, are considered. The performance analysis shows that the proposed coded scheme outperforms the uncoded scheme significantly, or more import... View full abstract»

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  • Progressive video streaming over 2G and 3G wireless systems

    Publication Year: 2000, Page(s):1550 - 1554 vol.2
    Cited by:  Patents (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB)

    A progressive video codec can be designed to be finely scalable, that is, it can produce one fully embedded bitstream which can be decoded at any intermediate rate up to the full target rate, producing progressively better video quality with increased bit-rate. Video scalability is an attractive feature that not only provides bit-rate adaptability to different bandwidth conditions over a heterogen... View full abstract»

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  • An initial cell search scheme robust to frequency error in W-CDMA system

    Publication Year: 2000, Page(s):1400 - 1404 vol.2
    Cited by:  Papers (4)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    W-CDMA is one of the RTT (radio transmission technology) proposals considered by IMT-2000. Initial cell search in a W-CDMA system is an important factor to determine the performance of the whole system. The initial cell search is typically carried out in three steps. In this paper, an initial cell search scheme robust to frequency error is proposed. The proposed scheme includes frequency error and... View full abstract»

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  • Matched filter code acquisition of burst and continuous pilot signal in Doppler shift

    Publication Year: 2000, Page(s):1276 - 1280 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    This paper introduces analytical results for code acquisition of a DS spread spectrum system in which either continuous pilot (CP) or burst pilot (BP) is used. Emphasis is in the performance and restrictions of Doppler shift, which is taken into account as signal-to-noise decreases. The performance measure is the mean acquisition time. Constant false alarm rate criteria are used as threshold setti... View full abstract»

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  • Performance evaluation of mixing real-time and non-real-time services in UTRA

    Publication Year: 2000, Page(s):1545 - 1549 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    An investigation on mixing real-time and non-real-time services in UTRA is presented. The main objective of this work is to observe and understand how service characteristics of bit-rate, mean connection duration, required Eb/I0 and delay tolerance, influence the performance of radio resource management (RRM) in supporting mixed real-time and non-real-time services View full abstract»

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  • Blind spreading factor detection for DS-CDMA

    Publication Year: 2000, Page(s):1395 - 1399 vol.2
    Cited by:  Papers (1)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    In WCDMA systems, the spreading factor (SF) of a user is allowed change as a new radio frame (length 10 ms) starts. The receiver does not know in advance the SF a user is really using. In this paper, techniques to detect the used spreading factor are studied. The problem is formulated as a general SF detection problem for a DS-CDMA systems. The optimal detector as well as the suboptimal autocorrel... View full abstract»

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  • Feasibility study of a spread from spectrum VHF (SSV) radio for public safety

    Publication Year: 2000, Page(s):1270 - 1275 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    This study explored the feasibility and limitations of a spread-spectrum very high frequency (VHF) radio (SSV) concept. This SSV concept proposed overlapping the spread-spectrum signal over the VHF narrowband channels. To determine whether the VHF spread-spectrum approach was feasible, the received narrowband interference (NBI) on the SSV receiver performance was calculated and compared with a set... View full abstract»

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  • Considerations on link and system throughput of Bluetooth networks

    Publication Year: 2000, Page(s):1315 - 1319 vol.2
    Cited by:  Papers (28)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    The radio network performance of a large number of Bluetooth piconets is investigated in this contribution. Asynchronous packet data connections are considered exclusively. Continuously transmitting piconets as well as partially loaded piconets with constant average user bit rate (according to a WWW traffic model) are treated. All piconets are located in a single room. It turns out that Bluetooth ... View full abstract»

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  • Branch-dependent metric for Viterbi based receivers for GMSK in frequency selective fading channel

    Publication Year: 2000, Page(s):1150 - 1154 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    Maximum likelihood sequence detection (MLSD) using the Viterbi algorithm (VA) is a widely employed detection technique for both coherent and non-coherent detection of continuous phase modulation (CPM) signals due to the inherently nonlinear behaviour of the digital channel. In particular, its application to limiter-discriminator (LD) demodulation schemes has received wide attention in the last yea... View full abstract»

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  • Statistical analysis and evaluation of modelling techniques for self-similar video source traffic

    Publication Year: 2000, Page(s):1540 - 1544 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    Video is expected to be a significant part of information in future mobile communication systems. An accurate and efficient video source traffic characterisation is therefore essential in order to assess new traffic handling algorithms and appropriately dimension the supporting communication networks. Modelling VBR traffic as a stochastic process is often challenging since such traffic exhibits th... View full abstract»

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  • Portable broadband Internet access: system and services

    Publication Year: 2000, Page(s):1207 - 1215 vol.2
    Cited by:  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (804 KB)

    Wireless communications has created a generation of users who are entirely dependent on portable devices for personal connectivity. The underlying technologies have matured to a level where portable telephony is ubiquitous, and a very large and exciting market is emerging. Now, what promises to be the transparent convergence of the Internet and wireless is portable broadband Internet access. The e... View full abstract»

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  • Smart antenna for IEEE 802.11 wireless LAN II with near field distortion compensation

    Publication Year: 2000, Page(s):1454 - 1458 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB)

    Smart antenna technology has proved to be a valuable add-in feature for communication systems. However, its application indoors, in particular to the unlicensed 2.4-GHz industrial, scientific and medical (ISM) band has not been accomplished yet, mainly due to the problem of near-field distortion that upsurges from the indoor channel characteristics at the mentioned band. We evaluate the compensati... View full abstract»

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  • Towards rapid development of configurable, reliable, and scalable wireless applications

    Publication Year: 2000, Page(s):1037 - 1043 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (620 KB)

    This paper presents Aurora, a software toolkit that dramatically reduces the effort required to develop configurable, reliable, and scalable wireless applications. The toolkit consists of software libraries, code generation tools, and executable software components that provide initialization and fault tolerance support typically needed by these applications. Aurora has been used in several experi... View full abstract»

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  • Multidimensional signaling and per-symbol detection for high data rate DS-CDMA systems

    Publication Year: 2000, Page(s):1390 - 1394 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    A novel multidimensional signaling and per-symbol detection are proposed for the uplink of DS-CDMA systems to achieve a constant envelope modulation and coherent demodulation while providing variable and high data rates. Unlike the conventional precoding technique, this scheme increases the data rate by compensating a loss in the information rate incurred by the constant envelope signal. It is sho... View full abstract»

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  • The influence of MTSO placement on wireless network cost

    Publication Year: 2000, Page(s):852 - 855 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (252 KB)

    In prior papers, the author has presented analytical methods for designing a minimal economic cost wireless system in areas of high spatial user density. This paper presents a case study of the application of those techniques to evaluate their usefulness in optimizing network cost in an existing system, using an actual city in the United States as the venue for the analysis. Existing network costs... View full abstract»

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  • On the performance of coexisting spread spectrum systems

    Publication Year: 2000, Page(s):1265 - 1269 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    Wireless communication services may in the future be provided by a larger number of operators than provide the services today. A key enabling factor is the possibility to automatically share the radio spectrum. Bandwidth efficiency is defined as the number of users that can be supported by a base station in a given spectrum. The bandwidth efficiency in a DS-CDMA and a frequency hopping system is s... View full abstract»

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  • Evaluatfon of soft handover algorithms for UMTS

    Publication Year: 2000, Page(s):772 - 776 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (372 KB)

    Soft handover (HO) is becoming quite important because of its suitability for CDMA based systems. Soft handover promises better performance than hard handover. The two most well-known benefits are fade margin improvement and higher uplink capacity, while the disadvantages include lower downlink capacity and more complex implementation. Proper design of handover is one of the main challenges in mob... View full abstract»

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  • High-speed simulation of the GPRS link layer

    Publication Year: 2000, Page(s):989 - 993 vol.2
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    The General Packet Radio Service (GPRS) is due to be implemented in current mobile networks, introducing a whole new range of mobile data applications and services. Considerable effort has been devoted to test its capabilities and system performance. In this paper, a modular and high-speed GPRS simulator is presented. In order to validate the simulation method, the GPRS link layer performance is a... View full abstract»

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  • Balanced distributed power control

    Publication Year: 2000, Page(s):1415 - 1419 vol.2
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    Power control acts as an important role in solving the near-far problem in cellular radio systems. A new distributed power control algorithm was proposed in this paper for cellular mobile radio systems, we called it balanced distributed power control (BDPC) algorithm, which can converge to the CIR balancing with probability one quickly. Compared with DPC (distributed power control) and FDPC (fully... View full abstract»

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  • Lossless handoff in microcellular networks for wireless Internet access

    Publication Year: 2000, Page(s):866 - 872 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (540 KB)

    Small cell sizes can lead to high rates of handoff in a broadband wireless environment. The virtual connection tree architecture has been proposed as an effective method to deal with this in a wireless ATM network. We review the virtual connection tree approach and we present and analyze a simple protocol designed to prevent cell loss and ensure cell sequence during handoff. Then we show how the c... View full abstract»

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  • Intermodulation distortion in switched multibeam antennas for cellular radio systems

    Publication Year: 2000, Page(s):1495 - 1499 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    The performance of switched multibeam antennas for cellular radio systems is investigated when the transmit amplifier is of a multicarrier (MCPA) type. The MCPA nonlinearity generates intermodulation distortion in the transmitted signal that is spatially filtered by the array radiation pattern. Hence, the intermodulation distortion becomes direction-dependent, and the direction of the generated in... View full abstract»

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  • Integrating Bluetooth with wireless and ricocheting

    Publication Year: 2000, Page(s):1310 - 1314 vol.2
    Cited by:  Papers (1)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    The authors specify the potential of integrating Bluetooth with a wireless network so that it can be used as the extension of a wireless system to provide in-building (wireless office) services, universal and multi-media, multi-system, multi-channel and multi-session services. They discuss the use combined use of ricocheting and Bluetoth so that in-building coverage can be provided through handoff... View full abstract»

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