Second International Conference on 3G Mobile Communication Technologies

26-28 March 2001

Filter Results

Displaying Results 1 - 25 of 85
  • Its services in Wales using the Wireless Application Protocol (WAP)

    Publication Year: 2001, Page(s):44 - 46
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (279 KB)

    This paper describes the UK site of the ITSWAP project which is developing ITS services using the Wireless Application Protocol (WAP). The site is situated in Wales and includes several key features aimed at improving travel using the potential of the WAP. ITS services being implemented in Wales include pre-trip traveller information, journey planning, route planning, tourist information, on-trip ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Achieving high data rates on the UMTS downlink shared channel using multiple antennas

    Publication Year: 2001, Page(s):373 - 377
    Cited by:  Papers (4)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (452 KB)

    We present a physical layer architecture for providing high speed downlink packet data services using multiple transmit and multiple receive antennas. This technique achieves high spectral efficiency by using a single spreading code to modulate distinct data streams transmitted from multiple antennas. The receiver uses multiple antennas and interference cancellation to demodulate the data streams.... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Air-interface techniques for achieving high data rates for UMTS

    Publication Year: 2001, Page(s):368 - 372
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (400 KB)

    Chip-level simulation results of QPSK, 8PSK, 16QAM and 64QAM modulation schemes with either rate-½ or rate-3/4 turbo codes (TCs) in wideband code division multiple access (WCDMA) downlink over various narrowband and wideband channels are presented. Post-decoding bit error rate (BER) is used as a performance measure. Implementation issues and achieved performance are discussed, particularly ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Throughput of high speed downlink packet access for UMTS

    Publication Year: 2001, Page(s):363 - 367
    Cited by:  Papers (8)  |  Patents (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (372 KB)

    The UMTS radio interface, as defined for Release '99, provides good support for symmetrical real-time circuit switched connections (e.g. telephony). However, some applications will generate highly asymmetric data flow. As an example, downloading Web pages with significant multimedia content is likely to require high data rates, mainly in the downlink direction, but with less demanding end-to-end d... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Chip-rate processing for software defined radios

    Publication Year: 2001, Page(s):292 - 296
    Cited by:  Papers (1)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (460 KB)

    Focussing on the receiver aspects, this paper considers the challenge of implementing the physical layer chip-rate signal processing of 3G standards, such as UMTS and cdma2000. Specifically, the particular issues involved in the design and implementation of chip-rate algorithms are illustrated by considering the specification and performance of a digital automatic gain control (AGC) suitable for a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Indoor coverage considerations for high-elevation angle systems

    Publication Year: 2001, Page(s):171 - 174
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (352 KB)

    It is increasingly the case that users of personal communications systems expect a seamless provision of coverage, whether in rural or urban areas, outdoors or indoors. Existing 2G systems provide a fair degree of indoor coverage from existing micro- or macrocell base stations, though subscribers generally expect to have to co-operate by positioning themselves near windows. Such coverage is increa... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Coverage-capacity analysis of opportunity driven multiple access (ODMA) in UTRA TDD

    Publication Year: 2001, Page(s):252 - 256
    Cited by:  Papers (21)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (404 KB)

    The multi-hop, ad-hoc wireless networks of ODMA can be shown to reduce overall transmission power compared with single hop transmission, however, for simple receivers and low user density, the actual capacity of UTRA TDD may be marginally reduced from the maximum non-relaying capacity. This paper analyses the capacity of ODMA in relation to the coverage of a cell. It is shown that after the covera... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Modified WAP for secure voice and video communication

    Publication Year: 2001, Page(s):33 - 37
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (416 KB)

    It is essential for future mobile communication systems to support different media types such as audio, video. There is also an increasing need to preserve the confidentiality, data integrity, and authenticity of these media to prevent fraud. In this paper, modifications to the wireless application protocol (WAP) are proposed to enable real time voice and video transmission in future mobile commun... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Channel adaptive multiple access and intersymbol interference cancellation techniques for TDD-mode UMTS receivers

    Publication Year: 2001, Page(s):267 - 271
    Cited by:  Papers (1)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (568 KB)

    This paper presents a comparison of simulation results for various time division duplex (TDD) UMTS receiver architectures. Uplink and downlink simulations are performed over frequency-selective time varying channels. Results indicate that in practice, satisfactory performance cannot be obtained using fixed branch receiver architectures. To overcome this limitation, a reconfigurable blind adaptive ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 3G evolution: real drivers and real solutions

    Publication Year: 2001, Page(s):355 - 357
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (624 KB)

    UMTS has moved from the research domain to that of investments and returns. UMTS technologies will begin to roll out during 2001 and beyond. Significant capital expenditure outlays, especially in the access network, and high expectations mean that 3G solutions have to deliver significant incremental service and performance gains over 2G to be credible and sustainable in the market place. However, ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An open digital interface between SDR baseband processors and RF

    Publication Year: 2001, Page(s):311 - 316
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (540 KB)

    Presents an open, digital interface-OpenIFTM-designed by RadioScape Ltd., which enables high speed control and user data to be sent between front-end, RF processing units, and back-end, generic signal processing components, for use within base station, test and prototyping products. The adoption of such an interface is central to the success of software defined radio (SDR), both as a de... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Performance characteristics of the Enhanced General Packet Radio Service for the mobile Internet access

    Publication Year: 2001, Page(s):287 - 291
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (404 KB)

    The performance characteristics of the Enhanced General Packet Radio Service (EGPRS) with the focus on radio network dimensioning for the mobile Internet access are presented. The impact of the new modulation and coding schemes (MCSs) and the related link quality control (LQC) functions defined in the EGPRS specifications on the overall system performance and the quality of service (QoS) for the n... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Using open service access to enable mobile Internet applications in UMTS networks

    Publication Year: 2001, Page(s):341 - 345
    Cited by:  Papers (1)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (712 KB)

    Wireless network operators are faced with the significant challenge of rapidly designing and deploying innovative value added applications in a highly competitive environment. This paper explores the prospect for a wireless network operator to use the open service access (OSA) API to provide mobile Internet applications in a UMTS network. This prospect is based on the proposition that the core net... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Cell dimensioning under general user mobility

    Publication Year: 2001, Page(s):166 - 170
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (348 KB)

    Although, all the users within a cellular network are not stationary, the current cellular network design has as the fundamental assumption exactly this immobility of the users, resulting in treating them as their fixed wireline counterparts. However, cellular networks are quite different primarily because of the phenomenon of handover. This paper builds on the assumption of the Poissonian nature ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Managing increasingly software dependent mobile systems

    Publication Year: 2001, Page(s):247 - 251
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (452 KB)

    Trends within mobile communications networks are towards more diverse systems which rely increasingly of software components. The UK Virtual Centre of Excellence in Mobile and Personal Communications is researching these trends, and how it will be possible to control these future networks. This paper describes the work in the software dependent systems area of the programme View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • CRUMPET: creation of user-friendly mobile services personalised for tourism

    Publication Year: 2001, Page(s):28 - 32
    Cited by:  Papers (41)  |  Patents (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (476 KB)

    More and more people combine several purposes with travelling, such as business, leisure, entertainment, and education. Such people may not have time to pre-plan a travel schedule in detail. They need location-aware information about the destination domain and expect individualised information and services. The EU funded research project CRUMPET addresses these factors and will provide new informa... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • All IP architectures for cellular networks

    Publication Year: 2001, Page(s):180 - 185
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (328 KB)

    There are several organisations developing specifications for “All IP” cellular networks; i.e., fully IP protocols based networks. The specification work is on going in established standard developing organisations such as 3GPP, 3GPP2, and IETF, as well as in different industry forums such as 3G.IP and MWIF. We introduce the most important forums involved in All IP development and desc... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Dynamic allocation of capacity in UTRA TDD systems

    Publication Year: 2001, Page(s):262 - 266
    Cited by:  Papers (5)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (612 KB)

    This paper presents a dynamic channel allocation (DCA) algorithm based on the time slot scoring method. The algorithm is designed for multimedia traffic in system which implements time division code division multiple access system (TD/CDMA). The algorithm tries to provide each service class appropriate quality of service (QoS). Simulations of a system using both fixed channel allocation (FCA) and ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Will service convergence ever happen? A service based method for evolution planning

    Publication Year: 2001, Page(s):351 - 354
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (572 KB)

    The introduction of 3rd generation networks poses new problems to the integration of existing and emerging technologies. At the same time, it will bring about an opportunity for a much sought-after service unification. The new 3G system will create a new “technological centre of gravity” and is likely to function as an aggregator towards service convergence and network integration. Maj... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Impact of header error on EGPRS link level performance in IR mode

    Publication Year: 2001, Page(s):114 - 118
    Cited by:  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (380 KB)

    In EGPRS the gain achieved through code combining of erroneous data packets; the so-called incremental redundancy (IR), compared with no IR is highly dependent on successful decoding of the RLC/MAC header. This paper provides-under a simulation environment-the effect of header error on the downlink link level performance of EGPRS when operating in the IR mode. The results are presented in terms of... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Provision of streaming media services over mobile networks

    Publication Year: 2001, Page(s):104 - 108
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (456 KB)

    The 3G family of mobile communication standards specifications describe a streaming media service class designed for the provision of non-delay critical multimedia services. This paper describes the performance of streaming audio and video services over EGPRS (Enhanced General Packet Radio Service) networks under different network and channel conditions. Enhancements to the EGPRS radio link contro... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Capacity of an integrated LCD/UDD WCDMA cellular network

    Publication Year: 2001, Page(s):58 - 62
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (344 KB)

    Analytical characterisation of low constraint delay (LCD) traffic on the uplink in a WCDMA cellular network is a well-understood procedure. However, integration of UDD traffic into existing models is not immediately obvious. For example, a common approach to uplink capacity estimation of an integrated LCD/UDD WCDMA system simply involves choosing an activity factor that represents the latency of a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The use of sub-space transforms in signal and array processing

    Publication Year: 2001, Page(s):139 - 143
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (300 KB)

    In multipath channels signal processing algorithms based on second order statistics will not properly work and new alternatives have to be developed. This is essentially due to the fact that in such scenarios the autocorrelation matrix is usually correlated due to the time shifting property of the input signals which causes the eigenvalue spread of the correlation matrix to be much larger than uni... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Performance of a TDOA-AOA hybrid mobile location system

    Publication Year: 2001, Page(s):216 - 220
    Cited by:  Papers (24)  |  Patents (48)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (376 KB)

    A time difference of arrival (TDOA) technique has been proposed for providing location services in future UMTS networks. The performance of such a system is limited by errors in the time difference (TD) measurements primarily cause by non-line of sight (NLOS) propagation conditions. In future systems angle of arrival (AOA) measurements at the serving base station (BS) may be available, primarily a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Frequency synchronization in OFDM systems

    Publication Year: 2001, Page(s):92 - 98
    Cited by:  Papers (3)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (348 KB)

    This paper discusses the effects of frequency offset on the performance of orthogonal frequency division multiplexing (OFDM) digital communications. In this paper we present maximum likelihood (ML) algorithm for the joint estimation of sampling frequency offset and carrier frequency offset in the OFDM systems using a repeated data symbol. The simulation results are also presented View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.