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3G Mobile Communication Technologies, 2000. First International Conference on (Conf. Publ. No. 471)

Date 2000

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Displaying Results 1 - 25 of 94
  • CDMA mobile systems with tailor made power control to each mobile station

    Publication Year: 2000, Page(s):46 - 50
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (480 KB)

    Power control is an important issue in the capacity of DS-CDMA cellular systems to tackle the near-far problem, co-channel interference and varying signal strength in fading channels. In this paper, we propose an adaptive signal-interference-ratio (SIR) feedback power control technique so that the SIR threshold control level of each mobile station will be individually adjusted with respect to its ... View full abstract»

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  • Secure interoperation between 2G and 3G mobile radio networks

    Publication Year: 2000, Page(s):28 - 32
    Cited by:  Papers (3)  |  Patents (12)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (352 KB)

    Interoperation of 2G and 3G networks will be an important issue when both kinds of networks will exist in parallel and need to interwork with each other. Among other things, this implies that 2G subscribers should be able to access 3G networks by means of a 2G SIM card and a dual-mode handset. However, it is well known that 3G networks will offer its users an increased level of security when compa... View full abstract»

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  • Practical W-CDMA receiver and transmitter system design and simulation

    Publication Year: 2000, Page(s):117 - 121
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (428 KB)

    As terminal system designers begin to get to grips with the air-interface technology of W-CDMA and the other IMT-2000 technologies, there is a demand for a system-level simulation environment that is truly cross-disciplinary. The 3G and software radio concepts require an unprecedented degree of amalgamation between RF and DSP technology-areas that traditionally have been well separated. This point... View full abstract»

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  • Orange/Fujitsu wideband CDMA field trials-system overview

    Publication Year: 2000, Page(s):6 - 10
    Cited by:  Papers (1)  |  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (552 KB)

    Around the globe operators and manufacturers are rapidly preparing for the deployment of third generation systems. With some operators aiming for commercial deployment as early as 2001, field trials of third generation systems are currently well underway. Within the UK a number of third generation field trials are taking place and the purpose of this paper is to highlight a selection of the result... View full abstract»

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  • A study of video source modelling for 3G mobile communication systems

    Publication Year: 2000, Page(s):461 - 465
    Cited by:  Papers (10)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (376 KB)

    Video is expected to be a significant part of information carried by broadband integrated networks and 3G mobile communication systems. It is therefore important to provide accurate and efficient models for variable-bit-rate (VBR) video traffic in order to assess new algorithms in 3G mobile systems. Modelling VBR traffic as a stochastic process is a challenging task since such traffic exhibits a c... View full abstract»

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  • Numbering, naming and addressing for third generation mobile communications

    Publication Year: 2000, Page(s):33 - 35
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (176 KB)

    The third generation (3G) of mobile communications is approaching fast and networks based on 3G technology will be operational in the next few years in the major European countries. They will inherit system characteristics both from traditional telecommunications and from computer communications. We must establish a naming and addressing system for 3G that accommodates and coexists with IP and wit... View full abstract»

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  • Modified MAP algorithm for extended turbo BCH codes and turbo equalisers

    Publication Year: 2000, Page(s):185 - 189
    Cited by:  Papers (1)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (436 KB)

    The maximum a-posteriori (MAP) algorithm is modified in order to incorporate the parity check bit of extended BCH codes into calculating the log likelihood ratio (LLR) of the coded bits. The algorithm is then used jointly with channel equalisation-in a scheme referred to as turbo equalisation-in order to mitigate the effects of intersymbol interference (ISI) introduced by dispersive channels. The ... View full abstract»

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  • Perfect channel modeling and simulation of measured wide-band mobile radio channels

    Publication Year: 2000, Page(s):288 - 293
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (388 KB)

    Various types of channel sounders have previously been developed with the aim to measure and to investigate the propagation characteristics of wide-band mobile radio channels in different environments. After post-processing the collected data, one often presents the measured power output of the channel as a function of the multipath propagation delay and the Doppler frequency. Such a function is k... View full abstract»

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  • Effects of synchronisation and asymmetry in UTRA-TDD

    Publication Year: 2000, Page(s):86 - 88
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (224 KB)

    We study the interference suffered by UTRA-TDD systems taking into account synchronisation and asymmetry factors. The main conclusion from the simulation results is that the interference between base stations is potentially one of the most serious problems in the UTRA-TDD system View full abstract»

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  • Evaluation of location tracking schemes for satellite UMTS

    Publication Year: 2000, Page(s):381 - 386
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (464 KB)

    An adaptive location tracking scheme is proposed for satellite UMTS (S-UMTS). This scheme uses combination of a spotbeam based paging (SBP) method, footprint based paging (FBP) method and dynamic location update method. The performance of this scheme is evaluated against bandwidth, location update rate (LUR), processing time, consumption of satellites and mobile terminals (MT) power and fixed netw... View full abstract»

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  • Investigations into integrated location management in mobile multimedia networks

    Publication Year: 2000, Page(s):294 - 300
    Cited by:  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (336 KB)

    Advanced software protocols for multimedia packet networks are currently designed, tested and, in some cases, fielded by a variety of organisations. Additionally, a variety of solutions are required to provide next-generation, highly-programmable technology solutions to eventually provide reliable, efficient, and secure communications of multimedia traffic over rapidly-deployable mobile adhoc netw... View full abstract»

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  • Practical acquisition issues for UMTS

    Publication Year: 2000, Page(s):371 - 375
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1112 KB)

    When a UMTS mobile (UE) is powered-up it must first synchronise with a local Node B before it can use the network. Synchronisation must be achieved in the time, frequency and code domains. Time synchronisation is a two-part process, synchronising first to the primary synchronisation channel (PSCH) to find the power control period (PCP) boundaries, and then to the secondary synchronisation channel ... View full abstract»

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  • A novel implitation of reverse link acquisition

    Publication Year: 2000, Page(s):367 - 370
    Cited by:  Papers (1)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (256 KB)

    A simple and economic scheme for coarse code acquisition of reverse link for UMTS (FDD-WCDMA) application is presented. The acquisition performance is evaluated in terms of probability of false detection (pf) in a multiple cell and multipath fading operating environment. The large timing uncertainties region of acquisition in the presence of fading channel and multiple access interference may impo... View full abstract»

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  • Adaptive antenna array system combining the adaptive beamformer with the interference canceller for wideband DS/CDMA

    Publication Year: 2000, Page(s):195 - 199
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (376 KB)

    We propose a scheme that combines the adaptive beamformer (ABF) and the interference canceller (IC) for wideband DS/CDMA. The high pass filter (HPF) and the IC of the proposed scheme consist of the ABF to lessen the computation time of the system. This proposed scheme is analyzed in wideband vector channels of a microcell environment. The proposed scheme provides a better cancellation of the multi... View full abstract»

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  • First International Conference on 3G Mobile Communication Technologies (Conf. Publ. No.471)

    Publication Year: 2000
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (392 KB)

    The following topics were dealt with: third generation network trials and testing; migration to 3G mobile radio networks; power control; system performance and modelling; time division duplex; receiver techniques; IP techniques; cell and network planning; error correction and coding; smart antennas; 3G capacity analysis; handover; interference cancellation and multi-user detection; positioning and... View full abstract»

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  • Overcoming the challenges of lower layer protocol reconfiguration for software radio based mobile terminals

    Publication Year: 2000, Page(s):331 - 335
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (412 KB)

    Dynamic reconfiguration of lower layers of the protocol stacks used in communications terminals is key to the development of future multi-mode software radios. Together with the use of software downloading, future terminals will become a platform to support the deployment of yet unspecified services and applications. This paper details experiments undertaken that have demonstrated a new way to dow... View full abstract»

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  • Linear multi-user detectors for TDD mode of UMTS (IMT-TC)

    Publication Year: 2000, Page(s):99 - 102
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (264 KB)

    We have examined the effect of multi-user detectors for the TDD mode of wideband CDMA, particularly the downlink. It is shown that under dispersive conditions a RAKE receiver suffers from a high mean square error at its output when all the codes are used in parallel and is not particularly suitable for high levels of QAM. Generally it is not possible to use the CDMA channel at a user bit rate whic... View full abstract»

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  • Network planning and optimization in the third generation wireless networks

    Publication Year: 2000, Page(s):441 - 445
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (360 KB)

    We review the technical challenges and requirements of network planning and optimization techniques for third generation wireless systems. In particular, we highlight the key differences of network planning techniques for second generation and third generation wireless networks. Moreover, we propose a new approach to wireless network design in which the physical characteristics of wireless systems... View full abstract»

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  • Reverse link gating in cdma2000

    Publication Year: 2000, Page(s):65 - 69
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (276 KB)

    In this paper, we propose reverse link transmission (both traffic and pilot) to be gated 50% of the time for 1/8 rate speech transmission and show that significant talk time and reverse link capacity improvement can be achieved out of this gating scheme in cdma2000. The position and duration of the gating periods have a significant effect on the performance. The optimal scheme is discussed, and an... View full abstract»

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  • Providing seamless services for VoIP mobile data networks using CAMEL/IN concepts

    Publication Year: 2000, Page(s):133 - 137
    Cited by:  Patents (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (484 KB)

    Packet switched real time applications are receiving considerable interest in mobile networks, in particular the General Packet Radio Service (GPRS) is currently undergoing study into its evolution for the support of such applications. Telephony is expected to be one of the first real time applications such as voice over IP (VoIP) to be made available and support for existing telephony services is... View full abstract»

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  • CCMA codes concatenated with block RLL/ECC for multimedia applications over UMTS

    Publication Year: 2000, Page(s):181 - 184
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (268 KB)

    We propose a system using collaborative coding multiple access (CCMA) codes concatenated with block runlength-limited error-control codes (RLL/ECC) which can support multimedia services over UMTS sharing the same radio resource without usage of any extra bandwidth. The performance of the proposed system is evaluated by simulation over a mobile radio channel with and without CCMA codes. The result ... View full abstract»

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  • Application of space-time coding techniques in third generation systems

    Publication Year: 2000, Page(s):276 - 280
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (372 KB)

    We consider the application of space-time processing techniques using multiple antennas to third generation mobile communication systems, which have been shown to enable substantial capacity improvements. We describe a technique for the evaluation of such schemes and apply it to some potential applications of the technique within the current third generation standards. We describe a simple techniq... View full abstract»

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  • Resource management in a broadband satellite network

    Publication Year: 2000, Page(s):392 - 400
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (768 KB)

    We address the problem of resource management over a broadband satellite network explicitly referring to the work done in the framework of the WISDOM project. In particular, after a overview of general requirements of next generation broadband multimedia satellite systems (BMSS), an overview of the WISDOM system is given together with a detailed functional description of modules responsible for tr... View full abstract»

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  • Multiple code adaptive despreader for UTRA TDD

    Publication Year: 2000, Page(s):94 - 98
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (336 KB)

    A modified version of the minimum mean square error receiver to be used with UTRA TDD mode is presented in this paper. The structure is tested in a multipath fading channel and its equalisation and multipath access interference suppression characteristics are studied and compared with the traditional receiver and with a linear equaliser CDMA receiver View full abstract»

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  • The effects of inter-system interference in UMTS at 1920 MHz

    Publication Year: 2000, Page(s):103 - 107
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (432 KB)

    The Universal Mobile Telecommunications System (UMTS) is composed of an FDD and TDD mode. Both modes have an adjacent carrier at 1920 MHz. The implications thereof for system capacity are analysed. In this context, the FDD mode is assumed to account for full spatial coverage and the TDD mode is employed to cover areas with increased traffic `hot spots'. The separation distance of the TDD and FDD b... View full abstract»

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