1999/4

 

Recent Submissions

  • Design, Simulation and Realization of a Dual-Mode Oscillator with Distributed RC Structure 

    Oweis, R.; Minarik, M. (Společnost pro radioelektronické inženýrství, 1999-12)
    This submission dealt with the design, simulation and realisation of a dual mode oscillator with distributed RC structures that use AT-cut quartz resonator as stabilisation element and sensor element of its own temperature. ...

  • GSM Channel Equalization Algorithm - Modern DSP Coprocessor Approach 

    Drutarovsky, M. (Společnost pro radioelektronické inženýrství, 1999-12)
    The paper presents basic equations of efficient GSM Viterbi equalizer algorithm based on approximation of GMSK modulation by linear superposition of amplitude modulated pulses. This approximation allows to use Ungerboeck ...

  • An Effective Go-Back-N Automatic-Repeat-Request Scheme for Variable-Error-Rate Channels 

    Kosut, P.; Polec, J.; Diaz, P.; Menhart, P. (Společnost pro radioelektronické inženýrství, 1999-12)
    In non stationary channels, error rates vary considerably. This paper proposes an effective go-back-N (GBN) Automatic-Repeat-Request (ARQ) scheme which estimates the channel state in a simple manner, and adaptively switches ...

  • High-Level Analogue Fault Simulation Using Linear and Non-Linear Models 

    Bartsch, E. K.; Bell, I. (Společnost pro radioelektronické inženýrství, 1999-12)
    A novel method for analogue high-level fault simulation (HLFS) using linear and non-linear high-level fault models is presented. Our approach uses automated fault model synthesis and automated model selection for fault ...

  • Neural Network Based Speech Enhancement 

    Tlucak, J.; Juhar, J.; Dobos, L.; Cizmar, A. (Společnost pro radioelektronické inženýrství, 1999-12)
    This paper deals with methods of speech enhancement with particular focus on neural speech enhancement. Speech enhancement is concerned with the neural processing of noisy speech to improve the quality and intelligibility ...

  • 2-D Motion Estimation of Video Sequences with Influnce of Zero-Mean Gaussian Noise 

    Usama, S.; Simak, B.; Klima, M. (Společnost pro radioelektronické inženýrství, 1999-12)
    This paper presents the performance of four motion estimation algorithms with present of zero-mean Gaussian noise. The performance of full search (FS) algorithm, three-step search (TSS) algorithm, new three-step search ...

  • CAR2 - Czech Database of Car Speech 

    Pollak, P.; Vopicka, J.; Hanzl, V.; Sovka, Pavel (Společnost pro radioelektronické inženýrství, 1999-12)
    This paper presents new Czech language two-channel (stereo) speech database recorded in car environment. The created database was designed for experiments with speech enhancement for communication purposes and for the study ...

  • Finite Word-Length Effects in Digital State-Space Filters 

    Davidek, V.; Antosova, M.; Psenicka, B. (Společnost pro radioelektronické inženýrství, 1999-12)
    The state-space description of digital filters involves except the relationship between input and output signals an additional set of state variables. The state-space structures of digital filters have many positive ...