• Transmission Cooperative Strategies for MIMO-OFDM Heterogeneous Networks 

    Ali, S.S.; Castanheira, D.; Silva, A.; Gameiro, A. (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 ...
  • Semiempirical Modeling of Reset Transitions in Unipolar Resistive-Switching based Memristors 

    Picos, R.; Roldan, J.B.; Al Chawa, M.M.; Garcia-Fernandez, P.; Jimenez-Molinos, F.; Garcia-Moreno, E. (Společnost pro radioelektronické inženýrství, 2015-06)
    We have measured the transition process from the high to low resistivity states, i.e., the reset process of resistive switching based memristors based on Ni/HfO2/Si-n+ structures, and have also developed an analytical model ...
  • Gain Enhancement of a Wide Slot Antenna Using a Second-Order Bandpass Frequency Selective Surface 

    Chatterjee, A.; Parui, S. K. (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 ...
  • A Frequency-Reconfigurable Monopole Antenna with Switchable Stubbed Ground Structure 

    Liu, X. L.; Yang, X. L.; Kong, F. L. (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 ...
  • Robust Simulation of a TaO Memristor Model 

    Ascoli, A.; Tetzlaff, R.; Chua, L. (Společnost pro radioelektronické inženýrství, 2015-06)
    This work presents a continuous and differentiable approximation of a Tantalum oxide memristor model which is suited for robust numerical simulations in software. The original model was recently developed at Hewlett Packard ...
  • Properties of the Optical Planar Polymer Waveguides Deposited on Printed Circuit Boards 

    Prajzler, V.; Nekvindova, P.; Hyps, P.; Jerabek, V. (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 ...
  • A Memristor as Multi-Bit Memory: Feasibility Analysis 

    Bass, O.; Fish, A.; Naveh, D. (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 ...
  • Application of Memristors in Microwave Passive Circuits 

    Potrebic, M.; Tosic, D. (Společnost pro radioelektronické inženýrství, 2015-06)
    The recent implementation of the fourth fundamental electric circuit element, the memristor, opened new vistas in many fields of engineering applications. In this paper, we explore several RF/microwave passive circuits ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • A Compact Tri-band Printed Antenna for MIMO Applications 

    Zang, J. W.; Wang, X. T. (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 ...
  • 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, ...
  • 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 ...
  • 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 ...