Now showing items 1-20 of 33

  • A Compact Tri-band Printed Antenna for MIMO Applications 

    Zang, Jiawei; Wang, Xuetian (Společnost pro radioelektronické inženýrství, 2015-06)
    In this paper, a compact tri-band printed multi-input multi-output (MIMO) antenna with high isolation is presented to operate within WLAN and WiMAX frequency bands. By adopting a rectangular open-ended slot combined with ...
  • Interleaving Gains for Receive Diversity Schemes of Distributed Turbo Codes in Wireless Half–Duplex Relay Channels 

    Soliman, Tamer H. M.; Yang, Fengfan; Ejaz, Saqib (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 ...
  • Influence of Stereoscopic Camera System Alignment Error on the Accuracy of 3D Reconstruction 

    Bolecek, Libor; Ricny, Vaclav (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 ...
  • Gain Enhancement of a Wide Slot Antenna Using a Second-Order Bandpass Frequency Selective Surface 

    Chatterjee, Ayan; Parui, Susanta Kumar (Společnost pro radioelektronické inženýrství, 2015-06)
    Gain enhancement of a wide slot antenna over a wide frequency band using a low profile, second order bandpass frequency selective surface (FSS) as a superstrate is presented in this paper. The proposed multilayered FSS ...
  • Reliable Modeling of Ideal Generic Memristors via State-Space Transformation 

    Biolek, Dalibor; Biolek, Zdenek; Biolkova, Viera; Kolka, Zdenek (Společnost pro radioelektronické inženýrství, 2015-06)
    The paper refers to problems of modeling and computer simulation of generic memristors caused by the so-called window functions, namely the stick effect, nonconvergence, and finding fundamentally incorrect solutions. A ...
  • Formulating the Net Gain of MISO-SFN in the Presence of Self-Interferences 

    Jeon, Sungho; Kim, Junghyun; Mok, Ha-Kyun; Seo, Jong-Soo (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 ...
  • A Frequency-Reconfigurable Monopole Antenna with Switchable Stubbed Ground Structure 

    Liu, Xuelin; Yang, Xiaolin; Kong, Fangling (Společnost pro radioelektronické inženýrství, 2015-06)
    A frequency-reconfigurable coplanar-waveguide (CPW) fed monopole antenna using switchable stubbed ground structure is presented. Four PIN diodes are employed in the stubs stretching from the ground to make the antenna ...
  • Classification of Overlapped Audio Events Based on AT, PLSA, and the Combination of Them 

    Leng, Yan; Sun, Chengli; Cheng, Chuanfu; Xu, Xinyan; Li, Si; Wan, Honglin; Fang, Jing; Li, Dengwang (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, ...
  • Wavelet-Based Compressive Sensing for Point Scatterers 

    Wilsenach, Gregory; Mishra, Amit Kumar (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 ...
  • Design and Evaluation of Digital Baseband Converter Sub-channel Delay Compensation Method on Bandwidth Synthesis 

    Jiang, Kun; Yan, Pingbo; Wang, Yuanqin; Jiao, Yiwen; Lian, Xin; Xu, Ke (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 ...
  • Design and Implementation of a FPGA and DSP Based MIMO Radar Imaging System 

    Wang, Wei; Liang, Dong; Wang, Zhihua; Yu, Haiyang; Liu, Qi (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 ...
  • A Memristor as Multi-Bit Memory: Feasibility Analysis 

    Bass, Ori; Fish, Alexander; Naveh, Doron (Společnost pro radioelektronické inženýrství, 2015-06)
    The use of emerging memristor materials for advanced electrical devices such as multi-valued logic is expected to outperform today's binary logic digital technologies. We show here an example for such non-binary device ...
  • Systematic Derivation for Quadrature Oscillators Using CCCCTAs 

    Li, YongAn (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 ...
  • Properties of the Optical Planar Polymer Waveguides Deposited on Printed Circuit Boards 

    Prajzler, Vaclav; Nekvindova, Pavla; Hyps, Petr; Jerabek, Vitezslav (Společnost pro radioelektronické inženýrství, 2015-06)
    This paper reports on a technology for realization of an optical planar waveguide layer on duroid substrate and on FR4 fiber reinforced board material printed circuit boards. Waveguide core material was EpoCore polymer and ...
  • Carrier Sense Random Packet CDMA Protocol in Dual-Channel Networks 

    Du, Chuan-bao; Quan, Hou-de; Cui, Pei-zhang; Liang, Wei; Zhou, Po; Dou, Jian-bin (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 ...
  • Differential Equations of Ideal Memristors 

    Biolek, Zdenek; Biolek, Dalibor; Biolkova, Viera (Společnost pro radioelektronické inženýrství, 2015-06)
    Ideal memristor is a resistor with a memory, which adds dynamics to its behavior. The most usual characteristics describing this dynamics are the constitutive relation (i.e. the relation between flux and charge), or ...
  • Finding the Most Uniform Changes in Vowel Polygon Caused by Psychological Stress 

    Stanek, Miroslav; Sigmund, Milan (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 ...
  • Generalized detector as a spectrum sensor in cognitive radio networks 

    Shbat, Modar; Tuzlukov, Vyacheslav (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 ...
  • Quadrature Phase Shift Keying (QPSK) Modulator Design using Multi-Port Network in Multilayer Microstrip-Slot Technology for Wireless Communication Applications 

    Seman, Norhudah; Mohamed Ghazali, Siti Nor Ain (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 ...
  • Transmission Cooperative Strategies for MIMO-OFDM Heterogeneous Networks 

    Ali, Syed Saqlain; Castanheira, Daniel; Silva, Adao; Gameiro, Atilio (Společnost pro radioelektronické inženýrství, 2015-06)
    Mobile traffic in cellular networks is increasing exponentially, mainly due to the use of data intensive services like video. One way to cope with these demands is to reduce the cell-size by deploying small-cells along the ...