Now showing items 23-30 of 30

  • RF Localization in Indoor Environment 

    Stella, M.; Russo, M.; Begusić, D. (Společnost pro radioelektronické inženýrství, 2012-06)
    In this paper indoor localization system based on the RF power measurements of the Received Signal Strength (RSS) in WLAN environment is presented. Today, the most viable solution for localization is the RSS fingerprinting ...
  • Signal to Noise Ratio Maximization in Quiet Zone Acquisitions for Range Assessment at Sub-millimeter Wavelengths 

    Muñoz-Acevedo, A.; Sierra-Castañer, M. (Společnost pro radioelektronické inženýrství, 2012-06)
    This paper proposes a quiet zone probing approach which deals with low dynamic range quiet zone acquisitions. Lack of dynamic range is a feature of millimeter and sub-millimeter wavelength technologies. It is consequence ...
  • Third-order Intermodulation Reduction in Mobile Power Amplifiers by the First Stage Bias Control 

    Jung, J. H.; Kwak, C. H.; Lee, J. S. (Společnost pro radioelektronické inženýrství, 2012-06)
    In this paper, the third order intermodulation distortion (IMD3) of three-stage power amplifier (PA) is analyzed using the Volterra series. The analysis explains how the total IMD3 of the three-stage power amplifier can ...
  • Time-Scale Domain Characterization of Time-Varying Ultrawideband Infostation Channel 

    Chude-Okonkwo, U. A. K.; Ngah, R.; Leow, C. Y.; Rahman, T. A. (Společnost pro radioelektronické inženýrství, 2012-06)
    The time-scale domain geometrical-based method for the characterization of the time varying ultrawideband (UWB) channel typical of an infostation channel is presented. Compared to methods that use Doppler shift as a measure ...
  • Universality and Realistic Extensions to the Semi-Analytic Simulation Principle in GNSS Signal Processing 

    Jakubov, O.; Kacmarik, P.; Kovar, P.; Vejrazka, F. (Společnost pro radioelektronické inženýrství, 2012-06)
    Semi-analytic simulation principle in GNSS signal processing bypasses the bit-true operations at high sampling frequency. Instead, signals at the output branches of the integrate&dump blocks are successfully modeled, thus ...
  • Wall Compensation for Ultra Wideband Applications 

    Muqaibel, A. H.; Iya, N. M.; Johar, U. M. (Společnost pro radioelektronické inženýrství, 2012-06)
    Due to their low frequency contents, ultra wideband (UWB) signals have the ability to penetrate walls and obstacles. As the signal propagates through these obstacles, it gets attenuated, slows down, and gets dispersed. ...
  • Watermarking FPGA Bitfile for Intellectual Property Protection 

    Zhang, J.; Lin, Y.; Wu, Q.; Che, W. (Společnost pro radioelektronické inženýrství, 2012-06)
    Intellectual property protection (IPP) of hardware designs is the most important requirement for many Field Programmable Gate Array (FPGA) intellectual property (IP) vendors. Digital watermarking has become an innovative ...
  • Wideband Characteristic Basis Functions in Radiation Problems 

    Kucharski, A. A. (Společnost pro radioelektronické inženýrství, 2012-06)
    In this paper, the use of characteristic basis function (CBF) method, augmented by the application of asymptotic waveform evaluation (AWE) technique is analyzed in the context of the application to radiation problems. Both ...