Poslední příspěvky

  • Design and Evaluation of Digital Baseband Converter Sub-channel Delay Compensation Method on Bandwidth Synthesis 

    Kun Jiang; Pingbo Yan; Yuanqin Wang; Yiwen Jiao; Xin Lian; Ke Xu (Společnost pro radioelektronické inženýrství, 2015-06)
    The effect of sub-channel delay on bandwidth synthesis is investigated to eliminate the “phase step” phenomenon in bandwidth synthesis during the test of CDBE (Chinese Digital Backend). Through formula derivation, we realize ...
  • Formulating the Net Gain of MISO-SFN in the Presence of Self-Interferences 

    Jeon, S.; Kim, J.; Mok, H.-K.; Seo, J.-S. (Společnost pro radioelektronické inženýrství, 2015-06)
    In this study, an analytical formula for multiple-input single-output single frequency network gain (MISO-SFNG) is investigated. To formulate the net MISO-SFNG, we derived the average signal to interference plus noise ratio ...
  • Wavelet-Based Compressive Sensing for Point Scatterers 

    Wilsenach, G.; Mishra, A. K. (Společnost pro radioelektronické inženýrství, 2015-06)
    Compressive Sensing (CS) allows for the sam-pling of signals at well below the Nyquist rate but does so, usually, at the cost of the suppression of lower amplitude sig-nal components. Recent work suggests that important ...
  • High Speed Dim Air Target Detection Using Airborne Radar under Clutter and Jamming Effects 

    Almslmany, A. E.; Cao, Q. S.; Wang, C. Y. (Společnost pro radioelektronické inženýrství, 2015-06)
    The challenging potential problems associated with using airborne radar in detection of high Speed Maneuvering Dim Target (HSMDT) are the highly noise, jamming and clutter effects. The problem is not only how to remove ...
  • Finding the Most Uniform Changes in Vowel Polygon Caused by Psychological Stress 

    Stanek, M.; Sigmund, M. (Společnost pro radioelektronické inženýrství, 2015-06)
    Using vowel polygons, exactly their parameters, is chosen as the criterion for achievement of differences between normal state of speaker and relevant speech under real psychological stress. All results were experimentally ...
  • Influence of Stereoscopic Camera System Alignment Error on the Accuracy of 3D Reconstruction 

    Bolecek, L.; Ricny, V. (Společnost pro radioelektronické inženýrství, 2015-06)
    The article deals with the influence of inaccurate rotation of cameras in camera system alignment on 3D reconstruction accuracy. The accuracy of the all three spatial coordinates is analyzed for two alignments (setups) of ...
  • Classification of Overlapped Audio Events Based on AT, PLSA, and the Combination of Them 

    Leng, Y.; Sun, C. L.; Cheng, C. F.; Xu, X. Y.; Li, S.; Wan, H. L.; Fang, J.; Li, D. W. (Společnost pro radioelektronické inženýrství, 2015-06)
    Audio event classification, as an important part of Computational Auditory Scene Analysis, has attracted much attention. Currently, the classification technology is mature enough to classify isolated audio events accurately, ...
  • Robust Adaptive LCMV Beamformer Based On An Iterative Suboptimal Solution 

    Xiansheng Guo; Lei Chu; Baocang Li (Společnost pro radioelektronické inženýrství, 2015-06)
    The main drawback of closed-form solution of linearly constrained minimum variance (CF-LCMV) beamformer is the dilemma of acquiring long observation time for stable covariance matrix estimates and short observation time ...
  • A Novel Combined System of Direction Estimation and Sound Zooming of Multiple Speakers 

    Khaddour, H.; Schimmel, J.; Rund, F. (Společnost pro radioelektronické inženýrství, 2015-06)
    This article presents a new system for estimation the direction of multiple speakers and zooming the sound of one of them at a time. The proposed system is a combination of two levels; namely, sound source direction ...
  • Wideband DOA Estimation via Sparse Bayesian Learning over a Khatri-Rao Dictionary 

    Yujian Pan; Ning Tai; Naichang Yuan (Společnost pro radioelektronické inženýrství, 2015-06)
    This paper deals with the wideband direction-of-arrival (DOA) estimation by exploiting the multiple measurement vectors (MMV) based sparse Bayesian learning (SBL) framework. First, the array covariance matrices at different ...
  • Generalized detector as a spectrum sensor in cognitive radio networks 

    Shbat, M.S.; Tuzlukov, V.P. (Společnost pro radioelektronické inženýrství, 2015-06)
    The implementation of the generalized detector (GD) in cognitive radio (CR) systems allows us to improve the spectrum sensing performance in comparison with employment of the conventional detectors. We analyze the spectrum ...
  • An Efficient Algorithm by Kurtosis Maximization in Reference-Based Framework 

    Zhao, W.; Wei, Y. M.; Shen, Y. H.; Cao, Y. F.; Yuan, Z. G.; Xu, P. C.; Jian, W. (Společnost pro radioelektronické inženýrství, 2015-06)
    This paper deals with the optimization of kurtosis for complex-valued signals in the independent component analysis (ICA) framework, where source signals are linearly and instantaneously mixed. Inspired by the recently ...
  • Quadrature Phase Shift Keying (QPSK) Modulator Design using Multi-Port Network in Multilayer Microstrip-Slot Technology for Wireless Communication Applications 

    Seman, N.; Mohamed Ghazali, S. N. A. (Společnost pro radioelektronické inženýrství, 2015-06)
    The design of the quadrature phase shift keying (QPSK) modulator by using a multi-port network is proposed in this article for the use in wireless communication applications. The multi-port network is in the form of ...
  • Systematic Derivation for Quadrature Oscillators Using CCCCTAs 

    Li, Y. A. (Společnost pro radioelektronické inženýrství, 2015-06)
    According to 16 nullor-mirror models of the current-controlled current conveyor transconductance amplifier (CCCCTA) and using nodal admittance matrix (NAM) expansion method, three different classes of the double-mode ...
  • Carrier Sense Random Packet CDMA Protocol in Dual-Channel Networks 

    Du, C.; Quan, H.; Cui, P.; Liang, W.; Zhou, P.; Dou, J. (Společnost pro radioelektronické inženýrství, 2015-06)
    Code resource wastage is caused by the reason that many hopping frequency (FH) sequences are unused, which occurs under the condition that the number of the actual subnets needed for the tactical network is far smaller ...
  • Design and Implementation of a FPGA and DSP Based MIMO Radar Imaging System 

    Wei Wang; Dong Liang; Zhihua Wang, Haiyang Yu, Qi Liu (Společnost pro radioelektronické inženýrství, 2015-06)
    The work presented in this paper is aimed at the implementation of a real-time multiple-input multiple-output (MIMO) imaging radar used for area surveillance. In this radar, the equivalent virtual array method and time-division ...
  • Self-optimizing Uplink Outer Loop Power Control for WCDMA Network 

    Markoc, A. G.; Sisul, G. (Společnost pro radioelektronické inženýrství, 2015-06)
    The increasing demands for high data rates, drives the efforts for more efficient usage of the finite natural radio spectrum resources. Existing wideband code division multiple access (WCDMA) uplink outer loop power control ...
  • Node Density Estimation in VANETs Using Received Signal Power 

    Khomami, G.; Veeraraghava, P.; Fontan, F. P. (Společnost pro radioelektronické inženýrství, 2015-06)
    Accurately estimating node density in Vehicular Ad hoc Networks, VANETs, is a challenging and crucial task. Various approaches exist, yet none takes advantage of physical layer parameters in a distributed fashion. This ...
  • Interleaving Gains for Receive Diversity Schemes of Distributed Turbo Codes in Wireless Half–Duplex Relay Channels 

    Soliman, Tamer H. M.; Yang, Fengfan; Ejaz, S. (Společnost pro radioelektronické inženýrství, 2015-06)
    This paper proposes the interleaving gain in two different distributed turbo-coding schemes: Distributed Turbo Codes (DTC) and Distributed Multiple Turbo Codes (DMTC) for half-duplex relay system as an extension of our ...
  • Labeling Diversity for 2x2 WLAN Coded-Cooperative Networks 

    Ejaz, S.; Yang, FengFan; Xu, HongJun (Společnost pro radioelektronické inženýrství, 2015-06)
    Labelling diversity is an efficient technique recently proposed in the literature and aims to improve the bit error rate(BER) performance of wireless local area network (WLAN) systems with two transmit and two receive ...

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