2007/4

 

Recent Submissions

  • Testing of DVB-H Mobile Terminals Capability 

    Prokopec, Jan; Kratochvil, Tomas (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 ...

  • Blind Source Separation Using Time-Frequency Masking 

    Mohammed, Abbas; Ballal, Tarig; Grbic, Nedelko (Společnost pro radioelektronické inženýrství, 2007-12)
    In blind source separation (BSS), multiple mixtures acquired by an array of sensors are processed in order to recover the initial multiple source signals. While a variety of Independent Component Analysis (ICA)-based ...

  • Joint Use of Constant Modulus and Least Squares Criteria in Linearly-Constrained Communication Arrays 

    Djigan, Viktor I. (Společnost pro radioelektronické inženýrství, 2007-12)
    This paper considers the application of the linear constraints and RLS inverse QR decomposition in adaptive arrays based on constant modulus criterion. The computational procedures of adaptive algorithms are presented. ...

  • Chip Interleaving and its Optimization for PAPR Reduction in MC-CDMA 

    Fedra, Zbynek; Marsalek, Roman; Sebesta, Vladimir (Společnost pro radioelektronické inženýrství, 2007-12)
    This paper analyzes the usability of peak to average power ratio (PAPR) reduction in multicarrier code division multiple access (MC-CDMA) by the chip interleaving optimization. This means chip position formatting to PAPR ...

  • Detection of Cortical Oscillations Induced by SCS Using Power Spectral Density 

    Svoboda, Lukas; Stancak, Andrej; Sovka, Pavel (Společnost pro radioelektronické inženýrství, 2007-12)
    Chronic, intractable pain of lower back and lower extremity might develop as the result of unsuccessful surgery of back. This state called failed-back surgery syndrome (FBSS) cannot be effectively treated by pharmacotherapy. ...

  • The Low Rate Telemetry Transmission Simulator 

    Spacek, Jiri; Kasal, Miroslav (Společnost pro radioelektronické inženýrství, 2007-12)
    The presented paper is dedicated to the low rate telemetry transmission simulator. The basic concept of the system uses the carrier (DSB) and subcarrier (BPSK). The research is focused on the AWGN and carrier phase noise ...

  • ICA Model Order Estimation Using Clustering Method 

    Ruckay, Lukas; Stastny, Jakub; Sovka, Pavel (Společnost pro radioelektronické inženýrství, 2007-12)
    In this paper a novel approach for independent component analysis (ICA) model order estimation of movement electroencephalogram (EEG) signals is described. The application is targeted to the brain-computer interface (BCI) ...

  • New Watermarking Scheme for Security and Transmission of Medical Images for PocketNeuro Project 

    Chemak, Chokri; Lapayre, Jean Christophe; Bouhlel, Mohamed Salim (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, Miroslav; Hudec, Robert (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 ...

  • Evaluation of Measurement Performance in Averaging Quantization System with Noise 

    Kamensky, Miroslav; Kovac, Karol; Kralikova, Eva; Krammer, Anton (Společnost pro radioelektronické inženýrství, 2007-12)
    Statistical description of quantization process is common in the theory of quantization. For the case of nonsubtractive dither theoretical analyses of the dithered quantizer have been confronted with experimental results. ...

  • On the Relationship between Integer Lifting and Rounding Transform 

    Prochaska, Jan; Vargic, Radoslav (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, ...

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

    Vodrazka, Jiri (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 ...

  • Single Frequency Networks (SFN) in Digital Terrestrial Broadcasting 

    Ricny, Vaclav (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 ...

  • New Methods of Stereo Encoding for FM Radio Broadcasting Based on Digital Technology 

    Stranak, Pavel (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. ...

  • Using of Hand Geometry in Biometric Security Systems 

    Varchol, Peter; Levicky, Dusan (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 ...

  • Robust Digital Watermarking Based on the Log-Polar Mapping 

    Ridzon, Radovan; Levicky, Dusan (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 ...

  • The Use of Wavelets in Image Interpolation: Possibilities and Limitations 

    Dumic, Emil; Grgic, Sonja; Grgic, Mislav (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 ...

  • Content Adaptive True Motion Estimator for H.264 Video Compression 

    Huska, Jozef; Kulla, Peter (Společnost pro radioelektronické inženýrství, 2007-12)
    Content adaptive true motion estimator for H.264 video coding is a fast block-based matching estimator with implemented multi-stage approach to estimate motion fields between two image frames. It considers the theory of ...

  • Localization of Cortical Oscillations Induced by SCS Using Coherence 

    Svoboda, Lukas; Stancak, Andrej; Sovka, Pavel (Společnost pro radioelektronické inženýrství, 2007-12)
    This paper suggests a method based on coherence analysis and scalp mapping of coherence suitable for more accurate localization of cortical oscillations induced by electric stimulation of the dorsal spinal cord (SCS), which ...