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Advanced TDMA Techniques and Applications (Digest No: 1996/234), IEE Colloquium on

Date 28 Oct 1996

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Displaying Results 1 - 11 of 11
  • Performance assessment of the advanced time division multiple access system by simulation

    Publication Year: 1996 , Page(s): 3/1 - 3/6
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (408 KB)  

    This paper describes the structure of a simulator developed for the performance assessment of the advanced time division multiple access system. The simulator incorporates a resource allocator (RA) module which interacts with other subsystems in the ATDMA model such as medium access, link adaptation, dynamic channel allocation and ARQ, as well as long term processes such as handover and admission ... View full abstract»

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  • Comparison of counter-measures against slow Rayleigh fading for TDMA systems

    Publication Year: 1996 , Page(s): 9/1 - 9/6
    Cited by:  Papers (5)  |  Patents (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (376 KB)  

    This paper compares the performance of three techniques for introducing tolerance to slow Rayleigh fading channels for TDMA fixed radio access schemes within a single cell: regular cyclic frequency hopping, adaptive modulation and coding, and frequency jumping when required. It is assumed for the channels considered that the fading rates are slow enough that simple feedback adaptive techniques are... View full abstract»

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  • Capacity of a PRMA system, and its application to adaptive TDMA

    Publication Year: 1996 , Page(s): 10/1 - 10/7
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (420 KB)  

    We consider the application of packet reservation multiple access (PRMA) in a cellular system, and especially its application in adaptive TDMA (A-TDMA) systems. We outline the principle of PRMA and evaluate its capacity, using simulation and an analytical upper bound, showing that capacity improvements of between 60% and 100% may be possible compared to conventional TDMA. We consider also the effe... View full abstract»

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  • Spectrum efficient transport of variable bit rate ATM services over an ATDMA based micro-cellular system

    Publication Year: 1996 , Page(s): 4/1 - 4/6
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (456 KB)  

    We investigate methods by which a variable bit rate ATM video service might be efficiently carried over a TDMA based UMTS system. Interference averaging and dynamic channel assignment (DCA) based approaches are compared. The effect on the achievable statistical multiplexing gain of using standard ATM connection admission control procedures is also assessed View full abstract»

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  • Capacity of intelligent underlay and overlay network

    Publication Year: 1996 , Page(s): 5/1 - 5/9
    Cited by:  Papers (5)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (596 KB)  

    This paper suggests a method of dimensioning the cell configuration of radio sites in a cellular network using the intelligent overlay and underlay (IOU) technique. The traffic capacity has been analysed by means of a teletraffic model, which is developed based on the classical theory of overflow traffic. The formulas of the model have been implemented with the use of MatLab. To verify the model, ... View full abstract»

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  • Colloquium on Advanced TDMA Techniques and Applications

    Publication Year: 1996 , Page(s): 0_1 - 0_5
    Cited by:  Patents (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (80 KB)  

    First Page of the Article
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  • Ericsson/Mannesmann GSM field-trials with adaptive antennas

    Publication Year: 1996 , Page(s): 6/1 - 6/6
    Cited by:  Papers (3)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (444 KB)  

    This paper describes Ericsson's GSM testbed for evaluation of adaptive antenna technology and joint field-trials made by Ericsson and Mannesmann Mobilfunk. The implementation principles and algorithms are briefly described together with the field-trial setup. The field-trials are carried out in Dusseldorf, Germany, by Mannesmann Mobilfunk and Ericsson. The paper also presents results from the fiel... View full abstract»

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  • Protocol issues for the introduction of adaptive antennas into existing second generation systems: GSM and DECT

    Publication Year: 1996 , Page(s): 7/1 - 7/6
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (448 KB)  

    Mobile communications has become extremely popular and the demand for higher cellular capacities has increased network congestion. Consequently many service providers are looking to improve efficiency within the cellular infrastructure. Adaptive antenna technology offers the possibility of increasing capacity by interference suppression. Implementation of adaptive antennas into current infrastruct... View full abstract»

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  • Evolution of the GSM air interface into wideband services

    Publication Year: 1996 , Page(s): 2/1 - 2/5
    Cited by:  Patents (5)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (372 KB)  

    In this paper, a wideband evolution of cellular is presented-an evolutionary time-division multiple-access scheme, that combines GSM compatibility with high performance and wideband service capabilities. Several evolutionary steps are considered, including linear higher order modulation and multicarrier techniques. It enables higher bit rate services to be mixed with low bit rates in a combined sc... View full abstract»

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  • On the application of TDMA in UMTS

    Publication Year: 1996 , Page(s): 1/1 - 1/4
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (344 KB)  

    This paper presents an overview of some of the issues involved in applying TDMA based techniques to the design of a UMTS radio access system. In particular it considers the essential requirements on the design of the (Universal Mobile Telecommunications Systems) UMTS air interface and the opportunities and constraints inherent in a TDMA based solution. The paper concludes with a description of a p... View full abstract»

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  • Adaptive antennas and mixed traffic in a DECT-WLL environment

    Publication Year: 1996 , Page(s): 8/1 - 8/6
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (480 KB)  

    The concept of wireless-local-loop (WLL) has been attracting a lot of interest these last years which have seen an upsurge in suggestions ranging from analog and digital cellular, to digital cordless and to proprietary technologies. Although they may address different market populations, TDMA-based DECT and DS-CDMA technologies appear for the present as the main contenders. DECT is an European sta... View full abstract»

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