V. Tuzlukov

Kyungpook National University, Daikyū, Daegu, South Korea

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Publications (12)0 Total impact

  • D. Das, M.S. Shbat, V. Tuzlukov
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    ABSTRACT: The bit error rate (BER) performance analysis of transmit beamforming technique employing the generalized receiver (GR) under the binary phase shift keying (BPSK) modulation over Rayleigh fading channel is investigated. The scheme uses two transmit antennas and one receive antenna. Simulation result demonstrates a high performance gain under employment of GR with transmit beamforming technique in comparison with the neyman pearson (NP) receiver under the same conditions.
    Advanced Communication Technology (ICACT), 2013 15th International Conference on; 01/2013
  • M.S. Shbat, Joon Hyung Yi, V. Tuzlukov
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    ABSTRACT: This paper is devoted to detection performance evaluation of the constant false alarm rate (CFAR) detectors employed by radar sensor systems used to construct the middle range radar (MRR) and short range radar (SRR) based on linear frequency modulation continuous wave (LFMCW) radar sensor system. Several CFAR detectors are compared under the same initial conditions and the evaluation criterion is an ability to detect the target return signals at different signal-to-noise ratio (SNR) with and without interfering targets. Simulation results are presented.
    Control, Automation and Systems (ICCAS), 2012 12th International Conference on; 01/2012
  • M.S. Shbat, V. Tuzlukov
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    ABSTRACT: A great problem for LTE networks employed large number of femtocells using the self optimization and configuration capabilities is to reduce the operational efforts. The handover process is a key element that has to be considered to improve efficiently the performance of the adopted femtocell technology and LTE network. This paper is devoted to a femtocell-to-femtocell handover approach based on simple feedback technique and existence of interface working as signalling system (SS). This interface allows us to exchange the priority lists and other signalling messages between femtocells, and helps us to overcome the drawbacks to use the public internet serving as control messages paths to handle the handover process.
    Communications (APCC), 2012 18th Asia-Pacific Conference on; 01/2012
  • Jin Gui Liu, M.S. Shbat, V. Tuzlukov
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    ABSTRACT: This paper deals with applying the adaptive non-blind beamforming (NB-BF) based on the least mean square (LMS) algorithm employed by the generalized receiver (GR) that is constructed according to the generalized approach to signal processing (GASP) in noise. The simulation results show good ability to cancel the interference at the GR output using the proposed combination.
    ICT Convergence (ICTC), 2012 International Conference on; 01/2012
  • D. Das, V. Tuzlukov, M.S. Shbat
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    ABSTRACT: In this paper, we investigate the bit error rate (BER) of 2 × 2 multiple-input multiple-output (MIMO) wireless communication system employing the generalized receiver (GR) under the binary phase shift keying (BPSK) modulation over Rayleigh fading channel with three equalization techniques: zero forcing (ZF), minimum mean square error (MMSE), and maximum likelihood (ML). Simulation presents a high performance for all three equalizers using GR for MIMO system in comparison with conventional receivers.
    IET International Conference on Information Science and Control Engineering 2012 (ICISCE 2012); 01/2012
  • M.R.R. Khan, V. Tuzlukov
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    ABSTRACT: Multipath fading effects and co-channel interference are the main limitations facing wireless communication systems. The problem to enhance the capacity of a code-division multiple-access (CDMA) in wireless communication system can be solved implementing an interference management. Many techniques controlling or suppressing an interference in CDMA wireless communication systems by transmitter and/or receiver, such as the transmit power control, multiuser detection, receiver beamforming, and transmit beamforming have been proposed to date. This paper deals with the possibilities to cancel unwanted signals by steering nulls of the pattern in the direction of arrival (DOA) of the signal while keeping the main beam to desired direction. Here we proposed a null steering beamforming algorithm to suppress co-channel interference in CDMA wireless communication systems that is based on the iterative method. Finally, simulation results confirm our theoretical study and efficacy of the proposed beamforming algorithm for CDMA wireless communication systems.
    Signal Processing and Communication Systems (ICSPCS), 2010 4th International Conference on; 01/2011
  • M.R.R. Khan, V. Tuzlukov
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    ABSTRACT: Antenna array systems are important components of modern radar and wireless communication systems. By controlling the array through a real-time optimization process, the adaptive techniques diminish the impact of system component noise and mitigate the effects of interfering radiation to ensure the delivery of a maximum fidelity signal. This paper deals with the possibilities to cancel unwanted signals by steering nulls of the pattern in the direction of high interference without affecting the main beam. We propose a null steering beamforming algorithm allowing us to suppress the interference based on the genetic algorithm (GA). The method used to calculate the position perturbations of selected elements is based on minimization of the power at the null locations and the power fluctuation in the main beam. The proposed null steering beamforming algorithm and the adaptive null steering method are compared with respect to the initial pattern using complex weights. We find that the proposed null steering beamforming algorithm possesses the better performance. Computer simulation shows the effectiveness of the proposed beamforming algorithm for wireless communication systems.
    Microwave Technology & Computational Electromagnetics (ICMTCE), 2011 IEEE International Conference on; 01/2011
  • M.S. Shbat, V. Tuzlukov
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    ABSTRACT: We discuss the main principles of signal detection and signal processing algorithms employed by the 24 GHz frequency modulation continuous wave (FMCW) radar sensor systems under closing vehicle detection (CVD). This research deals with designing the detection and signal processing algorithm for FMCW radar sensor based on the generalized approach to target return signal detection and processing in noise and interference.
    Radar Symposium (IRS), 2011 Proceedings International; 01/2011
  • M.R.R. Khan, V. Tuzlukov
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    ABSTRACT: Orthogonal frequency-division multiplexing (OFDM) is one of the promising techniques for modern mobile wireless data systems. For OFDM systems with co-channel interference, adaptive beamformer can be used for interference suppression. This paper focuses on a key issue for adaptive beamformer algorithm. In this paper, we have proposed an adaptive beamformer algorithm that based on least square-constant modulus (LS-CM) property of the OFDM signals. The proposed beamformer can effectively suppress co-channel interference. Finally, simulation results confirm the efficacy of the proposed beamforming algorithm for OFDM systems investigated in the present paper.
    Image and Signal Processing (CISP), 2010 3rd International Congress on; 11/2010
  • M. R. R. Khan, Vyacheslav Tuzlukov
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    ABSTRACT: This paper presents the problem of sensor fusion to estimate a walking person position. Simple walking person moving model is introduced. We propose two filtering algorithms to solve the present problem. The first algorithm represents an extended Kalman filter (EKF) model which is based on the principle of the state transition matrix and observation matrix linearization under Taylor series expansions. During walking, several various “walking modes” differ from each other in terms of moving model parameters. This fact is addressed to the second sensor fusion algorithm, namely, the interacting multiple model (IMM) algorithm, which also employes a single EKF for each considered mode, combines the state estimates and covariance matrices.
  • V. Tuzlukov
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    ABSTRACT: We investigate the multiuser generalized detector, which is constructed based on the generalized approach to signal processing in noise [1]-[5], for uniformly quantized synchronous code division multiple access (CDMA) signals in additive white Gaussian noise channels of wireless sensor networks and compare with minimum mean-square error (MMSE) multiuser receiver discussed in [6]. The input/output relationship of the quantizer is represented by the gain plus the additive noise model. Based on this model, we derive the weight vector and the output signal-to-interference ratio (SIR) of the multiuser generalized detector. The effects of quantization and sampling of the multiuser generalized detector performance is characterized in a single parameter named ldquoequivalent noise variancerdquo which is a function of the sum of each active userpsilas signal-to-noise ratio (SNR), processing gain, and the number of quantization and sampling levels. The optimal quantizer step size, which maximizes the multiuser generalized detector output SNR, is also determined. Simulation results validate the accuracy of our theoretical analysis and confirms a superiority of employment of the multiuser generalized detector over minimum mean-square error multiuser receiver, which is analyzed in [6].
    Control, Automation and Systems, 2008. ICCAS 2008. International Conference on; 11/2008
  • Source
    V. Tuzlukov
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    ABSTRACT: This paper handles the problem of directing signals with known form and structure and unknown or random amplitude and phase in the presence of compound-Gaussian noise with known spectral density. The generalized detector (GA) based on the generalized approach to signal processing (GASP) in noise is investigated (V. Tuzlukov, 1998, 2001, 2002). The structure of the GA detector is independent of the disturbance amplitude probability function. Based on this result, the threshold setting, which is itself independent on both the noise distribution and the signal parameters, ensures a constant false alarm rate. The detection performance analysis shows that the GA detector outperforms the optimum Neyman- Pearson (NP) receiver and the conventional square-law detector.
    Image and Signal Processing and Analysis, 2003. ISPA 2003. Proceedings of the 3rd International Symposium on; 10/2003

Publication Stats

14 Citations

Top Journals

Institutions

  • 2010–2012
    • Kyungpook National University
      • • Department of Electronic Engineering
      • • College of IT Engineering
      Daikyū, Daegu, South Korea
  • 2008
    • Yeungnam University
      • Department of Electronic Engineering
      Asan, South Chungcheong, South Korea
  • 2003
    • National Academy of Sciences of Belarus
      • Joint Institute of Informatics Problems
      Minsk, Minskaya Voblasts', Belarus