Poslední příspěvky

  • L-System Tool for Generating Fractal Antenna Structures with Ability to Export into EM Simulators 

    Hazdra, P.; Mazanek, M. (Společnost pro radioelektronické inženýrství, 2006-06)
    An L-System (Lindenmayer system) is a scheme primarily developed in the area of the computer science for simulating the development of biological structures. It has also been found very useful for generating the geometry ...
  • Error Concealment using Neural Networks for Block-Based Image Coding 

    Pavlovicova, J.; Oravec, M.; Polec, J.; Kelesi, M.; Mokos, M. (Společnost pro radioelektronické inženýrství, 2006-06)
    In this paper, a novel adaptive error concealment (EC) algorithm, which lowers the requirements for channel coding, is proposed. It conceals errors in block-based image coding systems by using neural network. In this ...
  • 3D Motion Estimation of Human Head by Using Optical Flow 

    Mihalik, J.; Michalcin, V. (Společnost pro radioelektronické inženýrství, 2006-06)
    The paper deals with the new algorithm of estimation of large 3D motion of the human head by using the optical flow and the model Candide. In the algorithm prediction of 3D motion parameters in a feedback loop and with ...
  • Difference Equations with Forward and Backward Differences and Their Usage in Digital Signal Processor Algorithms 

    Smekal, Z. (Společnost pro radioelektronické inženýrství, 2006-06)
    In the paper the relation is given between linear difference equations with constant coefficients those obtained via the application of forward and backward differences. Relation is also established between input-output ...
  • Statistical CAC Methods in ATM 

    Baronak, I.; Kvackaj, P. (Společnost pro radioelektronické inženýrství, 2006-06)
    Admission control is a very useful tool for a network operator. It enables effective link utilization with QoS guaranty. Without doubts, CAC function will be important part in evolution of next generation networks. The ...
  • Quad-Band U-Slot Antenna for Mobile Applications 

    Palmero, E. D. L. H.; Raida, Zbyněk; Ruiz, R. L. (Společnost pro radioelektronické inženýrství, 2006-06)
    In this paper, two different planar quad-band antennas are designed, modeled, fabricated and measured. Subsequently, the antennas are redesigned using an electromagnetic band gap substrate (EBG). Those new planar antennas ...
  • Methodology of Neural Design: Applications in Microwave Engineering 

    Pomenka, P.; Raida, Zbyněk (Společnost pro radioelektronické inženýrství, 2006-06)
    In the paper, an original methodology for the automatic creation of neural models of microwave structures is proposed and verified. Following the methodology, neural models of the prescribed accuracy are built within the ...
  • Novel Optimization Method of Active Frequency Multiplier Utilizing Harmonic Terminating Impedances with DGS 

    Kutin, P.; Kasal, M. (Společnost pro radioelektronické inženýrství, 2006-06)
    A novel method for the optimization of the active frequency multiplier utilizing the harmonic terminating impedances with the defected ground structures (DGS) has been developed. Furthermore, a new type of the low-pass ...
  • On Canonical Structures of ARC Biquadratic Filters with Single Transconductor 

    Dostal, T. (Společnost pro radioelektronické inženýrství, 2006-06)
    The paper deals with simple canonical structures of the second order ARC filters employing only single transconductor (OTA) and passive components R and C. A systematic design procedure of this circuits based on the given ...