Poslední příspěvky

  • Call Admission Control in Mobile Wireless 

    Dobos, L.; Goril, J. (Společnost pro radioelektronické inženýrství, 2002-12)
    Some problems related to wireless network access are discussed in the article. Special attention is paid to Medium Access Control and Call Admission Control. Both have direct impact on communication link accession. While ...
  • Mobile Access to the Internet 

    Novikmec, J.; Dobos, L. (Společnost pro radioelektronické inženýrství, 2002-12)
    In this paper various aspects of mobile access to Internet are discussed. We mention general Internet protocols and mobile enhancements and also future models that will be used in near future.
  • Distributed Speech Recognition 

    Burget, L.; Motlicek, P.; Grezl, F.; Jain, P. (Společnost pro radioelektronické inženýrství, 2002-12)
    This article discusses possibilities of integrating speech technology into wireless technology, allowing voice input for wireless devices. Distributed speech recognition concept and activities related to its standardization ...
  • Power Control Imperfection in CDMA Systems with Adaptive Antennas 

    Hrudkay, K.; Wieser, V. (Společnost pro radioelektronické inženýrství, 2002-12)
    This paper deals with a simulation of cellular CDMA system using base station adaptive antennas. The model assumes two tiers area, four types of antennas, lognormal shadowing corresponding to three types of environments ...
  • Wireless Local Area Networks: A Comprehensive Guide 

    Pomenka, P. (Společnost pro radioelektronické inženýrství, 2002-12)
    Nowadays the demand on exchange of information is higher and higher. During recent years rapid development of radio communication, both mobile and non-mobile has been experienced. Because of need of wider frequency range ...
  • Wireless Cellular Mobile Communications 

    Zalud, V. (Společnost pro radioelektronické inženýrství, 2002-12)
    In this article is briefly reviewed the history of wireless cellular mobile communications, examined the progress in current second generation (2G) cellular standards and discussed their migration to the third generation ...
  • Mutual Interference Models for CDMA Mobile Communication Networks 

    Wieser, V.; Hrudkay, K. (Společnost pro radioelektronické inženýrství, 2002-12)
    Nowadays we are witnesses of a huge development one of the most progressive communication technology - mobile networks. The main problem in these networks is an elimination of the mutual interference, which, mainly in ...
  • MIMO Spatial Diversity Communications - Signal Processing and Channel Capacity 

    Sykora, J. (Společnost pro radioelektronické inženýrství, 2002-12)
    This paper derives an equivalent discrete channel model for MIMO spatial diversity communications generally considering multidimensional spatial branch symbols and arbitrary path delays. This model is subsequently used for ...
  • Indoor Propagation Measurement for WLAN Systems Operating in 2.45 GHz ISM Band 

    Valek, M.; Zvanovec, S.; Pechač, Pavel (Společnost pro radioelektronické inženýrství, 2002-12)
    For a planning of indoor Wireless LAN systems working in the ISM band, the signal propagation prediction is needed. In this article, the measurement campaign based on two types of measurements at 2.45 GHz is introduced. ...
  • Area Coverage Simulations for Millimeter Point-to-Multipoint Systems Using Building Blockage 

    Ledl, P.; Pechač, Pavel (Společnost pro radioelektronické inženýrství, 2002-12)
    Area coverage simulation results for LMDS or PMP systems in millimeter waveband are presented in this paper. Area coverage simulations were performed according to ITU-R P.1410 model, where Rayleigh statistical distribution ...