• Global Evolutionary Algorithms in the Design of Electromagnetic Band Gap Structures with Suppressed Surface Waves Propagation 

    Kovacs, P.; Raida, Zbyněk (Společnost pro radioelektronické inženýrství, 2010-04)
    The paper is focused on the automated design and optimization of electromagnetic band gap structures suppressing the propagation of surface waves. For the optimization, we use different global evolutionary algorithms like ...
  • A Terrestrial Multiple-Receiver Radio Link Experiment at 10.7 GHz - Comparisons of Results with Parabolic Equation Calculations 

    Valtr, P.; Pechač, Pavel; Kvicera, V.; Grabner, M. (Společnost pro radioelektronické inženýrství, 2010-04)
    This work presents the results of a terrestrial multiple-receiver radio link experiment at 10.7 GHz. Results are shown in the form of the power levels recorded at several antennas attached to a receiving mast. Comparisons ...
  • Multicriteria Optimization of Antennas in Time-Domain 

    Lacik, J.; Lager, I. E.; Raida, Zbyněk (Společnost pro radioelektronické inženýrství, 2010-04)
    An original approach to the time-domain multicriteria optimization of antennas is presented. For a given excitation pulse, the time-domain objective function takes the “time-domain impedance matching”, distortion of responses ...
  • Blind Oversampling Data Recovery with Low Hardware Complexity 

    Kubicek, M.; Kolka, Zdeněk (Společnost pro radioelektronické inženýrství, 2010-04)
    The paper is focused on the optimization and implementation of fully digital feed-forward blind oversampling CDR (BO-CDR). Two new phase-decision algorithms are proposed. Their complexity is very low, enabling a very simple ...
  • A New Method for Generating High Non-linearity S-Boxes 

    Tesar, P. (Společnost pro radioelektronické inženýrství, 2010-04)
    Substitution boxes are important parts in many block and stream ciphers. The emergence of a range of crypto-attacks has led to the development of criteria for repelling such attacks. The non-linearity criterion provides ...
  • Use of Multi-Watermarking Schema to Maintain Awareness in a Teleneurology Diagnosis Platform 

    Kallel, M.; Bouhlel, M. S.; Lapayre, J. (Společnost pro radioelektronické inženýrství, 2010-04)
    Following the tremendous evolution of transferring images through the Internet, it is necessary to ensure security during this act, especially for medical images. The application of multiple watermarking tech- nique ...
  • Systematic Design of Fully Balanced Differential Current-Mode Multiple-Loop Feedback Filters Using CFBCCII 

    Chunhua, W.; Yang, L.; Qiujing, Z.; Yu, F. (Společnost pro radioelektronické inženýrství, 2010-04)
    In this paper, a systematic design method producing balanced current-mode filters is proposed, using current controlled fully balanced second-generation current conveyor circuit (CFBCCII). In this method, many kind of ...
  • FMCW Radar Performance for Atmospheric Measurements 

    Ince, T. (Společnost pro radioelektronické inženýrství, 2010-04)
    Frequency-modulated continuous-wave radars (FMCW) have been used in the investigation of the atmosphere since the late 1960’s. FMCW radars provide tremendous sensitivity and spatial resolution compared to their pulsed ...
  • Circularly Polarized Aperture Coupled Microstrip Antenna with Resonant Slots and a Screen 

    Kirov, G. S.; Mihaylova, D. P. (Společnost pro radioelektronické inženýrství, 2010-04)
    A broadband circularly polarized (CP) Aperture Coupled Microstrip Antenna (ACMSA) is described herein. In order to decrease the back radiation of the antenna due to resonant coupling slots (a cross-slot) in the ground ...
  • Calculation and Comparison of Turbulence Attenuation by Different Methods 

    Dordova, L.; Wilfert, O. (Společnost pro radioelektronické inženýrství, 2010-04)
    This paper is focused on the effect of turbulence in atmospheric transmission media. A short introduction of the origin of turbulent atmosphere is given. Two classical methods for the calculation of turbulence attenuation ...
  • Impact of Different Active-Speech-Ratios on PESQ’s Predictions in Case of Independent and Dependent Losses (in Presence of Receiver-Side Comfort-Noise) 

    Pocta, P.; Holub, J.; Vlckova, H.; Polkova, Z. (Společnost pro radioelektronické inženýrství, 2010-04)
    This paper deals with the investigation of PESQ’s behavior under independent and dependent loss conditions from an Active-Speech-Ratio perspective in presence of receiver-side comfort-noise. This reference signal characteristic ...
  • Modeling of the Phase Noise in Space Communication Systems 

    Baran, O.; Kasal, M. (Společnost pro radioelektronické inženýrství, 2010-04)
    Our work is focused on the investigation of an influence of an additive thermal noise and a multiplicative phase noise in space communication chains. The most important properties of both noise types are summarized. The ...
  • Modeling of Human Head Surface by Using Triangular B-Splines 

    Mihalik, J. (Společnost pro radioelektronické inženýrství, 2010-04)
    The paper deals with modeling of human head surface on the basis of quadratic triangular B-splines for the standard videocodec MPEG-4 SNHC. First, we define a triangular B-spline surface of any degree and then we present ...
  • New Grounded and Floating Simulated Inductance Circuits using Current Differencing Transconductance Amplifiers 

    Prasad, D.; Bhaskar, D. R.; Singh, A. K. (Společnost pro radioelektronické inženýrství, 2010-04)
    Current differencing transconductance amplifier (CDTA) is receiving considerable attention as a building block for current-mode (CM) analog signal processing / signal generation. In this paper, new CDTA based lossless ...
  • Simulation and Evaluation of CTP and Secure-CTP Protocols 

    Pecho, P.; Hanacek, P.; Nagy, J. (Společnost pro radioelektronické inženýrství, 2010-04)
    The paper discusses characteristics and qualities of two routing protocols – Collection Tree Protocol and its secure modification. The original protocol, as well as other protocols for wireless sensors, solves only problems ...
  • A Robust Threshold for Iterative Channel Estimation in OFDM Systems 

    Kalaycioglu, A.; Ilk, H. G. (Společnost pro radioelektronické inženýrství, 2010-04)
    A novel threshold computation method for pilot symbol assisted iterative channel estimation in OFDM systems is considered. As the bits are transmitted in packets, the proposed technique is based on calculating a particular ...
  • New Channel Coding Methods for Satellite Communication 

    Rumanek, J.; Sebesta, J. (Společnost pro radioelektronické inženýrství, 2010-04)
    This paper deals with the new progressive channel coding methods for short message transmission via satellite transponder using predetermined length of frame. The key benefits of this contribution are modification and ...
  • Electromagnetic Cylindrical Transparent Devices with Irregular Cross Section 

    Yang, C.; Yang, J.; Huang, M.; Shi, J.; Peng, J. (Společnost pro radioelektronické inženýrství, 2010-04)
    Electromagnetic transparent device is very important for antenna protection. In this paper, the material parameters for the cylindrical transparent devices with arbitrary cross section are developed based on the coordinate ...
  • Lossless Authentication Watermarking Based on Adaptive Modular Arithmetic 

    Yang, H.; Sun, X.; Sun, G.; Tian, Z. (Společnost pro radioelektronické inženýrství, 2010-04)
    Reversible watermarking schemes based on modulo-256 addition may cause annoying salt-and-pepper noise. To avoid the salt-and-pepper noise, a reversible watermarking scheme using human visual perception characteristics and ...
  • Feedback Compensation Algorithm for BPSK/QPSK Carrier Synchronization 

    Liu, Y.; Tao, C. (Společnost pro radioelektronické inženýrství, 2010-04)
    This paper deals with carrier synchronization problem in coherent communication system, such as BPSK and QPSK. First, this paper surveys and analyzes currently existing carrier synchronization algorithms and relevant ...