Now showing items 15-23 of 23

  • New Statistics for Texture Classification Based on Gabor Filters 

    Bandzi, P.; Oravec, M.; Pavlovicova, J. (Společnost pro radioelektronické inženýrství, 2007-09)
    The paper introduces a new method of texture segmentation efficiency evaluation. One of the well known texture segmentation methods is based on Gabor filters because of their orientation and spatial frequency character. ...
  • Quadric Resistive Sheet Profile for Wideband Antennas 

    Reznicek, Z.; Raida, Zbyněk (Společnost pro radioelektronické inženýrství, 2007-09)
    A new type of a nonreflecting resistive dipole antenna with quadric continuous resistivity profile is presented in this paper. The antenna is mathematically described and compared with the antenna originally proposed by ...
  • Quantum Description of Optical Devices Used in Interferometry 

    Kucera, P. (Společnost pro radioelektronické inženýrství, 2007-09)
    A quantum-mechanical description of the phase shifters, retarders, mirrors and beam splitters is given in the paper. The description is then applied on two types of states. On a coherent state, a classical-like state, and ...
  • A Robust Chaos-Based True Random Number Generator Embedded in Reconfigurable Switched-Capacitor Hardware 

    Drutarovsky, M.; Galajda, P. (Společnost pro radioelektronické inženýrství, 2007-09)
    This paper presents a new chaos-based True Random Number Generator (TRNG) with a decreased voltage supply sensitivity. Contrary to the traditionally used sources of randomness it uses a well-defined deterministic ...
  • Routing Protocol for Mobile Ad-hoc Wireless Networks 

    Nogales, I. M. B. (Společnost pro radioelektronické inženýrství, 2007-09)
    Bluetooth is a cutting-edge technology used for implementing wireless ad hoc networks. In order to provide an overall scheme for mobile ad hoc networks, this paper deals with scatternet topology formation and routing ...
  • Software for CATV Design and Frequency Plan Optimization 

    Hala, O. (Společnost pro radioelektronické inženýrství, 2007-09)
    The paper deals with the structure of a software medium used for design and sub-optimization of frequency plan in CATV networks, their description and design method. The software performance is described and a simple design ...
  • Spreading Sequences Generated Using Asymmetrical Integer-Number Maps 

    Sebesta, V. (Společnost pro radioelektronické inženýrství, 2007-09)
    Chaotic sequences produced by piecewise linear maps can be transformed to binary sequences. The binary sequences are optimal for the asynchronous DS/CDMA systems in case of certain shapes of the maps. This paper is devoted ...
  • UMTS Network Model for Interference Analysis - Optimization of Spreading Codes Order 

    Ruzicka, Z.; Hanus, S. (Společnost pro radioelektronické inženýrství, 2007-09)
    This article deals with mathematical modeling of UMTS network. The presented model is designed for interference analysis in this network. The paper presents the set of simulations based on an idea of a specific order of ...
  • Wideband Rectangular Microstrip Patch Antenna Using L-Probe Feeding System 

    Hazdra, P.; Mazanek, M.; Cermak, J. (Společnost pro radioelektronické inženýrství, 2007-09)
    Paper focuses on so-called L-probe feeding technique suitable for wideband (30% relative bandwidth) driving of microstrip patch antennas. Physical explanation, simulation and measurement are presented. Further modification ...