• Embedded Platform for Automatic Testing and Optimizing of FPGA Based Cryptographic True Random Number Generators 

    Varchola, M.; Drutarovsky, M. (Společnost pro radioelektronické inženýrství, 2009-12)
    This paper deals with an evaluation platform for cryptographic True Random Number Generators (TRNGs) based on the hardware implementation of statistical tests for FPGAs. It was developed in order to provide an automatic ...
  • EMC Specific Problems of Frequency Converters Used at Interlocking Device 

    Novak, J.; Dolecek, R.; Cerny, O. (Společnost pro radioelektronické inženýrství, 2009-12)
    The paper deals with problems of electromagnetic compatibility (EMC) of frequency control drive of electromotive switch actuator of railway switch. The frequency converter with Pulse Width Modulation (PWM) and the output ...
  • Enhanced Receivers for Interference Cancellation in 3G Systems 

    Kejik, P.; Hanus, S. (Společnost pro radioelektronické inženýrství, 2009-12)
    Interference cancellation and multiuser detection in CDMA systems are still actual research topics. These techniques enable us to deal with interference and to increase system capacity. In this paper, a so-called Generalized ...
  • Equivalent Circuit Model for Designing of Jerusalem Cross-Based Artificial Magnetic Conductors 

    Hosseinipanah, M.; Wu, Q. (Společnost pro radioelektronické inženýrství, 2009-12)
    This paper introduces an equivalent circuit model to estimate the resonant frequency and reflection phase of Jerusalem cross-based artificial magnetic conductor (JC-AMC) structures for waves normally incident on the ...
  • Evaluation of a Mutually Coupled Diversity Receiver 

    Volmer, C.; Stephan, R.; Hein, M. A. (Společnost pro radioelektronické inženýrství, 2009-12)
    A quick, reliable, and simple evaluation of mutual coupling effects is essential for the optimization of antenna arrays for small mobile communications devices. In recent papers we have proposed novel figures of merit that ...
  • Explicit-Current-Output Quadrature Oscillator Using Second-Generation Current Conveyor Transconductance Amplifier 

    Lahiri, A. (Společnost pro radioelektronické inženýrství, 2009-12)
    This paper presents a novel quadrature sinusoidal oscillator using second-generation current conveyor transconductance amplifier as an active building block. The proposed circuit employs only a single second-generation ...
  • Fast Keyword Spotting in Telephone Speech 

    Nouza, J.; Silovsky, J. (Společnost pro radioelektronické inženýrství, 2009-12)
    In the paper, we present a system designed for detecting keywords in telephone speech. We focus not only on achieving high accuracy but also on very short processing time. The keyword spotting system can run in three modes: ...
  • A General Model of the Atmospheric Scattering in the Wavelength Interval 300 - 1100nm 

    Ferdinandov, E.; Dimitrov, K.; Dandarov, A.; Bakalski, I. (Společnost pro radioelektronické inženýrství, 2009-12)
    We have presented and developed new theoretic-empirical models of the extinction coefficients of the molecular scattering in the lower, close to the ground troposphere. We have included the indicatrices of backscattering. ...
  • A High-Capacity Image Data Hiding Scheme Using Adaptive LSB Substitution 

    Yang, H.; Sun, X.; Sun, G. (Společnost pro radioelektronické inženýrství, 2009-12)
    Many existing steganographic methods hide more secret data into edged areas than smooth areas in the host image, which does not differentiate textures from edges and causes serious degradation in actual edge areas. To avoid ...
  • High-Order Current-Mode and Transimpedance-Mode Universal Filters with Multiple-Inputs and Two-Outputs Using MOCCIIs 

    Horng, J. (Společnost pro radioelektronické inženýrství, 2009-12)
    A high-order current-mode and transimpedance-mode universal filter with multiple-inputs and two-outputs based on multiple output second-generation current conveyors (MOCCIIs) is introduced. By choosing the input current ...
  • Impact of Finger Placement on the Correlation Properties of Rake Combined Signals 

    Baltzis, K. B. (Společnost pro radioelektronické inženýrství, 2009-12)
    3G mobile devices and base stations employ rake receivers. An important issue in the design of such receivers is finger allocation. This paper explores the relationship between finger placement and the correlation properties ...
  • Maximum Available Accuracy of FM-CW Radars 

    Ricny, V. (Společnost pro radioelektronické inženýrství, 2009-12)
    This article deals with the principles and above all with the maximum available measuring accuracy analyse of FM-CW (Frequency Modulated Continuous Wave) radars, which are usually employed for distance and velocity ...
  • A Miniaturization Technique of a Compact Omnidirectional Antenna 

    Sufyar, S.; Delaveaud, C. (Společnost pro radioelektronické inženýrství, 2009-12)
    This paper discusses a miniaturization technique of a compact omnidirectional antenna. A slot loading technique is applied to a well-known low-profile antenna structure whose radiation characteristics are similar to ...
  • Modeling of Scientific Images Using GMM 

    Svihlik, J. (Společnost pro radioelektronické inženýrství, 2009-12)
    This paper deals with modeling of scientific and multimedia images in the wavelet domain. Images transformed into wavelet domain have a special shape of probability density function (PDF). Thus wavelet coefficients PDFs ...
  • Modeling of Transmission Functions and Crosstalk in Metallic Cables for Implementation of MIMO Concept 

    Lafata, P.; Vodrazka, J. (Společnost pro radioelektronické inženýrství, 2009-12)
    The new promising wireless networks based on multi-carrier modulations (MCM) and multiple-input multiple-output concept (MIMO) will soon offer high-speed digital connections. Their access points are mostly connected by ...
  • Multilateral Interoperability Programme 

    Burita, L. (Společnost pro radioelektronické inženýrství, 2009-12)
    The Multilateral Interoperability Programme (MIP) is a voluntary and independent activity in NATO environment by the participating nations and organizations. The MIP concept is based on data exchange in form of common ...
  • Multiport Multiband Decoupling Optimization for Miniature Antennas 

    Serrano, R.; Capdevila, S.; Aguasca, A.; Romeu, J.; Jofre, L. (Společnost pro radioelektronické inženýrství, 2009-12)
    Multiband multiport antennas are increasingly used for wireless communications and sensing miniature devices. The equations governing the multiport multiband antennas are analyzed in this paper with the objective of drawing ...
  • A Novel 2.4GHz CMOS Up-Conversion Current-Mode Mixer 

    Wan, Q.; Wang, C.; Ma, M. (Společnost pro radioelektronické inženýrství, 2009-12)
    In this paper, a low-power up-conversion current-mode mixer, designed in the chartered 0.18-μm RFCMOS technology, is proposed to realize the transmitter front-end in the frequency band of 2.4 GHz. The proposed mixer can ...
  • A Novel Comb-Pilot Transform Domain Frequency Diversity Channel Estimation for OFDM System 

    Liu, L.; Tao, C.; Qiu, J.; Qi, X. (Společnost pro radioelektronické inženýrství, 2009-12)
    Due to implementation complexity, the transform domain channel estimation based on training symbols or comb-type pilots has been paid more attention because of its efficient algorithm FFT/IFFT. However, in a comb-type OFDM ...
  • Performance of Predictor Based Link Adaptation Algorithms 

    Wieser, V.; Psenak, V. (Společnost pro radioelektronické inženýrství, 2009-12)
    The presented paper deals with the link adaptation algorithms in mobile radio access networks based on Wideband Code Division Multiple Access (WCDMA). The mobile radio channel has a significant impact on the transmitted ...