Now showing items 10-19 of 19

  • Multi-Carrier Modulation and MIMO Principle Application on Subscriber Lines 

    Vodrazka, J. (Společnost pro radioelektronické inženýrství, 2007-12)
    The multi-carrier modulation is used in many applications, primary for a wireless transmission, for example Wi-Fi and WiMAX networks or DVB-T. But the same physical principle can be used also for metallic lines in access ...
  • New Methods of Stereo Encoding for FM Radio Broadcasting Based on Digital Technology 

    Stranak, P. (Společnost pro radioelektronické inženýrství, 2007-12)
    The article describes new methods of stereo encoding for FM radio broadcasting. Digital signal processing makes possible to construct an encoder with properties that are not attainable using conventional analog solutions. ...
  • New Watermarking Scheme for Security and Transmission of Medical Images for PocketNeuro Project 

    Chemak, C.; Lapayre, J. C.; Bouhlel, M. S. (Společnost pro radioelektronické inženýrství, 2007-12)
    We describe a new Watermarking system of medical information security and terminal mobile phone adaptation for PocketNeuro project. The later term refers to a Project created for the service of neurological diseases. It ...
  • Novel Method for Color Textures Features Extraction Based on GLCM 

    Benco, M.; Hudec, R. (Společnost pro radioelektronické inženýrství, 2007-12)
    Texture is one of most popular features for image classification and retrieval. Forasmuch as grayscale textures provide enough information to solve many tasks, the color information was not utilized. But in the recent ...
  • On the Relationship between Integer Lifting and Rounding Transform 

    Prochaska, J.; Vargic, R. (Společnost pro radioelektronické inženýrství, 2007-12)
    In this paper we analyze the relationship between integer Lifting scheme and Rounding transform as means to compute the wavelet transform in signal processing area. We bring some new results which better describe relationship, ...
  • Robust Digital Watermarking Based on the Log-Polar Mapping 

    Ridzon, R.; Levicky, D. (Společnost pro radioelektronické inženýrství, 2007-12)
    The geometrical attacks are still an open problem for many digital watermarking algorithms used in present time. Most of geometrical attacks can be described by using affine transforms. This article deals with digital ...
  • Single Frequency Networks (SFN) in Digital Terrestrial Broadcasting 

    Ricny, V. (Společnost pro radioelektronické inženýrství, 2007-12)
    The paper deals with principles and properties of single frequency networks of digital television and radio transmitters. Basic definitions and contextual relationships (guard interval, area of SFN, influence of used ...
  • Testing of DVB-H Mobile Terminals Capability 

    Prokopec, J.; Kratochvil, T. (Společnost pro radioelektronické inženýrství, 2007-12)
    This paper deals with the transmission of digital television to the DVB-H mobile terminals and interaction of DVB-H system with GSM/UMTS network. The mobile terminals testing approach is introduced including the testing ...
  • The Use of Wavelets in Image Interpolation: Possibilities and Limitations 

    Dumic, E.; Grgic, S.; Grgic, M. (Společnost pro radioelektronické inženýrství, 2007-12)
    Discrete wavelet transform (DWT) can be used in various applications, such as image compression and coding. In this paper we examine how DWT can be used in image interpolation. Afterwards proposed method is compared with ...
  • Using of Hand Geometry in Biometric Security Systems 

    Varchol, P.; Levicky, D. (Společnost pro radioelektronické inženýrství, 2007-12)
    In this paper, biometric security system for access control based on hand geometry is presented. Biometric technologies are becoming the foundation of an extensive array of highly secure identification and personal ...