2009 10th International Conference on Telecommunications

8-10 June 2009

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Displaying Results 1 - 25 of 82
  • [Front cover]

    Publication Year: 2009
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  • Table of contents

    Publication Year: 2009, Page(s):ix - xiii
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  • [Title page]

    Publication Year: 2009, Page(s): i
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  • [Copyright notice]

    Publication Year: 2009, Page(s): ii
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  • Foreword

    Publication Year: 2009, Page(s): iii
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  • Sponsor

    Publication Year: 2009, Page(s): iv
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (86 KB)

    Lists the sponsors of this conference. View full abstract»

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  • Committee

    Publication Year: 2009, Page(s):v - vii
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  • List of reviewers

    Publication Year: 2009, Page(s): viii
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  • Conversational informatics for situated communication

    Publication Year: 2009, Page(s): 1
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (49 KB) | HTML iconHTML

    Summary form only given. Messages need to be situated for communication to make real sense in our life. Conversation allows us to exchange situated messages in simultaneous streams of social interactions at multiple levels. Conversation provides an effective means for circulating knowledge in a community. Conversational Informatics comprises a theoretical foundation of our endeavors of understandi... View full abstract»

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  • IPTV: Now and next

    Publication Year: 2009, Page(s): 3
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (107 KB) | HTML iconHTML

    This keynote address wants to establish the current status of IPTV and define how it will evolve with the new ubiquity of Internet video and smartphones with Web access. In particular, the discussion centers on how IPTV will move across device boundaries and include features now associated with over the top offerings and social networks. View full abstract»

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  • Futurecast in consumer (Mis)behaviour

    Publication Year: 2009, Page(s): 5
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (59 KB) | HTML iconHTML

    Trends in consumer behaviour. The search for meaning in a technological, rapidly moving, pressure-filled society - and the sense of dissonance that results. Intangibles like purpose, fulfillment and quality of life are gaining importance. Opposing, polarised forces are pervasive - whether in morals, standards, economics, ideologies, religion, or politics. So much of what is occurring globally appe... View full abstract»

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  • Current optical technologies for wireless access

    Publication Year: 2009, Page(s):7 - 17
    Cited by:  Papers (8)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1304 KB) | HTML iconHTML

    The objective of this paper is to describe recent activities and investigations on free-space optics (FSO) or optical wireless and the excellent results achieved within SatNEx an EU-framework 6th programme and IC 0802 a COST action. In a first part, the FSO technology is briefly discussed. In a second part, we mention some performance evaluation criterions for the FSO. In third part, we... View full abstract»

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  • Link reliability, range and rate optimization for free-space optical channels

    Publication Year: 2009, Page(s):19 - 23
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (160 KB) | HTML iconHTML

    Rate maximization and link reliability versus range tradeoff optimization for uncoded free-space optical (FSO) communication links in the presence of atmospheric turbulence and misalignment are analyzed via beam width selection. Two strategies are considered for beam width selection: adaptive and fixed beam width. The choice among these strategies depends on system performance and complexity. Perf... View full abstract»

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  • Practical considerations for indoor wireless optical system implementation using OFDM

    Publication Year: 2009, Page(s):25 - 29
    Cited by:  Papers (12)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (200 KB) | HTML iconHTML

    This paper describes the implementation of OFDM (orthogonal frequency division multiplexing) for optical wireless systems using non-coherent light. In particular, light emitting diodes (LEDs) and photodiodes (PDs) are considered. The paper shows how classical OFDM is adapted to optical system constraints. Several key OFDM design issues are studied. In this context it is demonstrated that the impac... View full abstract»

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  • Pulse position modulation for FSO systems: Capacity and channel coding

    Publication Year: 2009, Page(s):31 - 38
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (182 KB) | HTML iconHTML

    For terrestrial free space optical (FSO) systems, we investigate the use of pulse position modulation (PPM) which has the interesting property of being average-energy efficient. We first discuss the upper bound on the information transmission rate for a Gaussian channel. Next, we consider the more practical aspect of channel coding and look for a suitable solution for the case of Q-ary PPM. Instea... View full abstract»

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  • Simulation and analysis of FSO/RF switch over for different atmospheric effects

    Publication Year: 2009, Page(s):39 - 43
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (249 KB) | HTML iconHTML

    The high bandwidth free space optics (FSO) links has the tremendous potential to fulfil future high data rate demanding communication application. However, its widespread growth has been hampered by reduced availability due to atmospheric effects. An alternate solution is to use back up link that offers acceptable data rate along with higher tolerance to weather influences. This requires intellige... View full abstract»

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  • Results of an optical wireless ground link experiment in continental fog and dry snow conditions

    Publication Year: 2009, Page(s):45 - 49
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (500 KB) | HTML iconHTML

    High-bandwidth optical wireless transmission links are of prime importance and have tremendous potential to serve for the next generation optical access networks. Currently optical wireless or Free Space Optics (FSO) communication products supporting data rates over 1 Gbps are available from several communication equipment manufacturers. One obvious accompanying disadvantage of this technology com... View full abstract»

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  • Receiver design for wireless optical MIMO channels with magnification

    Publication Year: 2009, Page(s):51 - 58
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (452 KB) | HTML iconHTML

    In this work, receiver design for wireless optical MIMO channels with magnification is considered. The work done in this paper constitute a step towards the practical implementation of such links, since it is the first time the effects of spatial transformations are considered. Signal magnification introduces varying spatial frequency inter-channel interference (SF-ICI) at the receiver. A novel re... View full abstract»

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  • Turbulence mitigation by aperture averaging in wireless optical systems

    Publication Year: 2009, Page(s):59 - 66
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (253 KB) | HTML iconHTML

    Atmospheric turbulence can cause a significant performance degradation in free space optical (FSO) communication systems. We investigate the impact of aperture averaging on the performance of FSO systems under different atmospheric turbulence regimes. Performance evaluation is made in terms of the average bit-error-rate. In particular, we bring clearance on the impact of propagation model on the b... View full abstract»

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  • Hybrid systems using DVB-T, WLAN and FSO to connect peripheral regions with broadband Internet services

    Publication Year: 2009, Page(s):67 - 71
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1334 KB) | HTML iconHTML

    It is a well known fact that peripheral regions lack of reasonable broadband Internet services. Landlines often are outdated or have very high attenuation. WLAN and FSO (free space optics) are license free transmission technologies and DVB-T has become a geographically widespread technology. This paper show an alternative Internet access method using WLAN and FSO systems as a data uplink and DVB-T... View full abstract»

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  • Resilience differentiation in wireless Internet access

    Publication Year: 2009, Page(s):73 - 79
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (255 KB) | HTML iconHTML

    Always Best Connected and Differentiated Resilience is investigated as means to increase dependability and performance when accessing Internet from a mobile node or terminal. Providing Differentiated Resilience that gives preference to certain applications and mobile nodes will be needed, in particular in disaster and emergency scenarios. We show that using reservations for high priority traffic w... View full abstract»

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  • MAN performance measurements and optimization

    Publication Year: 2009, Page(s):81 - 87
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (331 KB) | HTML iconHTML

    The general parameters that affect the performance of MANs are physical topology and hierarchical model of the network. The performance of each individual link depends on the type and intensity of network traffic that is characterized by the traffic direction (download/upload), the packet size and the number of packets. If MAN links share a common communication medium, as in case of using the EEE ... View full abstract»

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  • The MAgNet: Agent-based middleware enabling social networking for mobile users

    Publication Year: 2009, Page(s):89 - 96
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (922 KB) | HTML iconHTML

    Nowadays social network services play an important role in users' everyday lives. This is especially emphasized in lives of users that belong to Generation Y. Young people often communicate and share various personal information with their family, friends or colleagues through virtual communities that are based on social relations. By introducing social networking concept into the mobile network d... View full abstract»

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  • The AMiGO-Mob: Agent-based middleware for group-oriented mobile service provisioning

    Publication Year: 2009, Page(s):97 - 104
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (910 KB) | HTML iconHTML

    In order to increase profit and remain competitive on the telecommunication market, telcos must introduce new types of services. Nowadays, basic mobile services are insufficient for an average user: advanced services include combination of entertainment and information content, and as such require greater personalization. The future of mobile communications is directed towards creating systems awa... View full abstract»

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  • RFID-based visitors modeling for galleries using Markov model

    Publication Year: 2009, Page(s):105 - 110
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (697 KB) | HTML iconHTML

    RFID are becoming increasingly popular and are widely used in many applications. Tags can be used for environment and habit monitoring, healthcare applications, home automation and pedestrian or vehicle traffic control. This paper describes the method of building a robust N-state Markov model that describes visitor's behavior in a gallery room. The built model can be used in planning of exhibition... View full abstract»

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