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Mobile Future, 2004 and the Symposium on Trends in Communications. SympoTIC '04. Joint IST Workshop on

Date 24-26 Oct. 2004

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Displaying Results 1 - 25 of 87
  • Design and implementation of Rijndael algorithm for GSM encryption

    Publication Year: 2004, Page(s):106 - 109
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (660 KB) | HTML iconHTML

    Encryption is used in communications systems to protect information being transmitted over a channel from being intercepted and read by unauthorised parties. This protection is achieved by converting the original message (plain text) into an encoded form (cipher text) that appears to be a random stream of symbols. A5 is the encryption algorithm used in order to ensure privacy of conversations on G... View full abstract»

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  • Analysis of the behaviour of different 2D interpolation techniques using an adaptive-pilot symbol aided OFDM wireless systems

    Publication Year: 2004, Page(s):43 - 46
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (604 KB)

    The work presented Allow to analysis the behaviour of different 2D interpolation filters using the conventional 2D distribution of the pilots in an OFDM system and an adaptive time frequency location technique of pilots taking into account the variability of the channel changes during the communication process. View full abstract»

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  • An optimal noncoherent sequence estimation for time varying TDMA wireless channel

    Publication Year: 2004, Page(s):118 - 121
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (610 KB) | HTML iconHTML

    An optimal sequence estimation algorithm has been proposed. Both systems with and without error correction code have been analyzed. Exploiting the proposed optimal detection algorithm, there is 1.2 dB SNR gain has been achieved over coherent detection (at BER 10-2) when the system without error correct code has been considered. For systems with and without error correction code, the pro... View full abstract»

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  • A modified trellis extracted synchronisation technique (TEST) for linear block codes

    Publication Year: 2004, Page(s):134 - 137
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (550 KB) | HTML iconHTML

    A modified trellis extracted synchronisation technique (TEST) is described in which the functions of demodulation, error control decoding and synchronisation are combined. The procedure is applied to the (9,4,4) array code and (8,4,4) generalised array code, using binary phase shift keying (BPSK) and quadriphase shift keying (QPSK) modulation schemes, and is shown to have performances better than ... View full abstract»

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  • Serially concatenated MSK with designed interleavers

    Publication Year: 2004, Page(s):51 - 53
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (569 KB) | HTML iconHTML

    The serial concatenation of an outer convolutional code, a designed interleaver and inner minimum shift keying (MSK) is presented. This system is compared to serially concatenated MSK with random interleaver and to a system with three outer convolutional codes and random interleaver, which is called woven coded MSK. It is shown analytically that serially concatenated MSK with designed interleaver ... View full abstract»

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  • Compression on partial overlap ATM link

    Publication Year: 2004, Page(s):142 - 145
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (608 KB) | HTML iconHTML

    One of important tasks in link allocation policies in multirate circuit switched loss models is sharing of link capacity between service classes. For quality of service guarantees the most interesting are sharing policies that maximize throughput and keep the per-class blocking probabilities under some GoS constraints. In this work is suggested a model and associated computational technique for co... View full abstract»

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  • Channel reliability metrics for flat Rayleigh fading channels without channel state information

    Publication Year: 2004, Page(s):58 - 61
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (636 KB) | HTML iconHTML

    In this work, iterative decoding of block turbo codes (BTCs) over flat Rayleigh fading channels is considered. The signal is modulated using binary phase shift keying (BPSK) and coherently detected. An exact channel reliability metric that should be passed to the iterative decoder to achieve optimum performance, when no channel state information (CSI) is available at the receiver, is developed. A ... View full abstract»

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  • The responsibility chain in end-to end reconfigurable systems

    Publication Year: 2004, Page(s):208 - 211
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (602 KB) | HTML iconHTML

    This work aims to describe the chain and relations of actors involved in reconfiguration and to identify the possible threats and associated responsibilities. Furthermore, it aims to provide a framework (i.e., the "responsibility chain") that offers the possibility to clearly assign the responsibilities for reconfiguration processes. View full abstract»

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  • On spreading efficiency of complementary codes

    Publication Year: 2004, Page(s):95 - 97
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (522 KB) | HTML iconHTML

    First Page of the Article
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  • Design and measurements of Ka-band waveguide dielectric rod antenna for 7 channel digital beamformer for HAPS

    Publication Year: 2004, Page(s):25 - 28
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (558 KB) | HTML iconHTML

    HAPS system is required to have strict specification to reduce the interference between adjacent cells. One of the most efficient ways to suppress the grating lobe in visible rang is to shape FTEP (flat-topped element pattern). This work presents the design and experimental results of 7 waveguide dielectric rod array antennas for shaping FTEP in the Ka-band. The calculated element pattern and the ... View full abstract»

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  • Adaptive beamforming techniques for OFDM based WLAN systems: a comparison between RLS and LMS

    Publication Year: 2004, Page(s):29 - 32
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (587 KB) | HTML iconHTML

    This work presents an study of different adaptive filter algorithms, RLS and LMS, applied in OFDM based WLAN systems. In the simulations, we use Hiperlan/2 standard. In a WLAN environment we can fin a desired signal, interfering signals and noise. In this kind of environment, we have used smart antennas in order to improve radiation diagram and signal/interference ratios. Finally, we compare resul... View full abstract»

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  • SympoTIC '04 - Joint IST Workshop on Mobile Future & Symposium on Trends in Communications - Cover

    Publication Year: 2004, Page(s): 0_1
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    Publication Year: 2004, Page(s): 0_2
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  • SympoTIC '04 - Joint IST Workshop on Mobile Future & Symposium on Trends in Communications - Title Page

    Publication Year: 2004, Page(s): 0_3
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    Publication Year: 2004, Page(s): 0_4
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  • Copyright

    Publication Year: 2004, Page(s): 0_5
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  • Greetings from the chairman of the program and organizing committee

    Publication Year: 2004, Page(s): 0_6
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  • The official patrons of SympoTIC '04

    Publication Year: 2004, Page(s): 0_7
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    Publication Year: 2004, Page(s): 0_8
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  • SympoTIC '04 Committees

    Publication Year: 2004, Page(s): 0_9
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  • List of reviewers

    Publication Year: 2004, Page(s): 0_10
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  • Table of contents

    Publication Year: 2004, Page(s):0_11 - 0_18
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  • [Breaker page]

    Publication Year: 2004, Page(s): 0_19
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    Publication Year: 2004, Page(s): 0_20
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    Publication Year: 2004, Page(s): 0_21
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