• Design and Validation of a Software Defined Radio Testbed for DVB-T Transmission 

    Baruffa, G.; Rugini, L.; Banelli, P. (Společnost pro radioelektronické inženýrství, 2014-04)
    This paper describes the design and validation of a Software Defined Radio (SDR) testbed, which can be used for Digital Television transmission using the Digital Video Broadcasting - Terrestrial (DVB-T) standard. In order ...
  • Mobile Communication Networks and Digital Television Broadcasting Systems in the Same Frequency Bands – Advanced Co-Existence Scenarios 

    Polak, L.; Kaller, O.; Klozar, L.; Sebesta, J.; Kratochvil, T. (Společnost pro radioelektronické inženýrství, 2014-04)
    The increasing demand for wireless multimedia services provided by modern communication systems with stable services is a key feature of advanced markets. On the other hand, these systems can many times operate in a ...
  • Analysis of Topological Impact on Wireless Channel Performance on Intelligent Street Lighting System 

    Azpilicueta, L.; Falcone, F.; Astrain, J.J.; Villadangos, J.; Chertudi, A.; Angulo, I.; Perallos, A.; Elejoste, P.; Garcia Zuazola, I. J. (Společnost pro radioelektronické inženýrství, 2014-04)
    In this work, an analysis of the physical radio channel propagation for the deployment of a wireless sensor network for intelligent street lighting is presented based on an in house implemented 3D ray launching code. ...
  • Analysis of Collaborative Beamforming for Wireless Sensor Networks with Phase Offset 

    Shen, X.; Huang, J.; Liu, P.; Pan, Y.; Xu, B.; Rao, Z. (Společnost pro radioelektronické inženýrství, 2014-04)
    Collaborative beamforming has been widely used in wireless sensor networks to improve the directivity of signals in long-distance transmission. The performance of collaborative beamforming has been well analyzed for the ...
  • A Matlab-Based Tool for Video Quality Evaluation without Reference 

    Zach, O.; Slanina, M. (Společnost pro radioelektronické inženýrství, 2014-04)
    This paper deals with the design of a Matlab based tool for measuring video quality with no use of a reference sequence. The main goals are described and the tool and its features are shown. The paper begins with a description ...
  • Filtenna Integration Achieving Ideal Chebyshev Return Losses 

    Hueltes, A.; Verdu, J.; Collado, C.; Mateu, J.; Rocas, E.; Valenzuela, J. L. (Společnost pro radioelektronické inženýrství, 2014-04)
    This paper demonstrates that it is possible to find an ideal filter response (Chebyshew, Butterworth,..) considering the antenna as the last resonator of a filter under certain circumstances related with the antenna ...
  • Multi-Antenna OFDM System Using Coded Wavelet with Weighted Beamforming 

    Anoh, K.; Asif, R.; Abd-Alhameed, R.; Rodriguez, J.J.; Noras, M.; Jones, S.M.R.; Hussaini, A. S. (Společnost pro radioelektronické inženýrství, 2014-04)
    A major drawback in deploying beamforming scheme in orthogonal frequency division multiplexing (OFDM) is to obtain the optimal weights that are associated with information beams. Two beam weighting methods, namely co-phasing ...
  • 5 Watt GaN HEMT Power Amplifier for LTE 

    Niotaki, K.; Collado, A.; Georgiadis, A.; Vardakas, J. (Společnost pro radioelektronické inženýrství, 2014-04)
    This work presents the design and implementation of a stand-alone linear power amplifier at 2.4 GHz with high output power. A GaN HEMT transistor is selected for the design and implementation of the power amplifier. The ...
  • Nonlinear Performance of BAW Filters Including BST Capacitors 

    Rocas, E.; Mateu, J.; Collado, C.; Hueltes, A.; Verdu, J.; Billard, C.; David, J.-B.; Reinhardt, A. (Společnost pro radioelektronické inženýrství, 2014-04)
    This paper evaluates the nonlinear effects occurring in a bulk acoustic wave (BAW) filter which includes barium strontium titanate (BST) capacitors to cancel the electrostatic capacitance of the BAW resonators. To do that ...
  • Simplified Metrics Calculation for Soft Bit Detection in DVB-T2 

    Perez-Calderon, D.; Baena-Lecuyer, V.; Doblado, J. G.; Oria, A. C.; Lopez, P. (Společnost pro radioelektronické inženýrství, 2014-04)
    The constellation rotation and cyclic quadrature component delay (RQD) technique has been adopted in the second generation terrestrial digital video broadcasting (DVB-T2) standard. It improves the system performance under ...
  • Multiuser Cooperation with Hybrid Network Coding in Wireless Networks 

    Wang, G.; Guo, D.; Liu, A.; Zhang, B. (Společnost pro radioelektronické inženýrství, 2014-04)
    In this paper a hybrid Network Coding Cooperation (hybrid-NCC) system is proposed to achieve both reliable transmission and high throughput in wireless networks. To balance the transmission reliability with throughput, the ...
  • Curved Track Analysis of FSO Link for Ground-to-Train Communications 

    Paudel, R.; Poliak, J.; Ghassemlooy, Z.; Wilfert, O.; Leitgeb, E. (Společnost pro radioelektronické inženýrství, 2014-04)
    In this work, a free space optical (FSO) link for the ground-to-train (G2T-FSO) communications is proposed. Analytical analysis is carried out for the curved rail tracks. We show that the transmitter divergence angle, the ...
  • BER Performance of IM/DD FSO System with OOK using APD Receiver 

    Petković, M. I.; Đorđević, G. T.; Milić, D. N. (Společnost pro radioelektronické inženýrství, 2014-04)
    In this paper, the performance of intensity-modulated with direct detection (IM/DD) free space optical (FSO) system using the on-off keying (OOK) and avalanche photodiode (APD) receiver is observed. The gamma-gamma model ...
  • Calculation of Angular Deflection Limits of a Mobile Free-Space Optical Link Beam 

    Nemecek, J.; Cizmar, J. (Společnost pro radioelektronické inženýrství, 2014-04)
    The paper describes the effect of optical beam angular deflection on the power received by the receiver of a mobile free-space optical (FSO) link. Permissible fluctuations in the power received were studied on a steady ...
  • Large Core Planar 1 x 2 Optical Power Splitter with Acrylate and Epoxy Resin Waveguides on Polydimetylsiloxane Substrate 

    Prajzler, V.; Mastera, R.; Jerabek, V. (Společnost pro radioelektronické inženýrství, 2014-04)
    Fabrication process of multimode 1 x 2 optical rectangular planar power splitter suitable for low-cost short distance optical network is presented. The splitters were designed by beam propagation method for standard ...
  • Performance Analysis of PCFICH and PDCCH LTE Control Channels 

    Milos, J.; Hanus, S. (Společnost pro radioelektronické inženýrství, 2014-04)
    Control channels play a key role in the evaluation of mobile system performance. The purpose of our paper is to evaluate the performance of the control channels implementation in the Long Term Evolution (LTE) system. The ...
  • Artificial Neural Network Utilization for FSO Link Performance Estimation 

    Mudroch, M.; Zvanovec, S. (Společnost pro radioelektronické inženýrství, 2014-04)
    This paper describes FSO link performance prediction based on available meteorological data using different Artificial Neural Network (ANN) approaches. Several types of ANNs were compared and their performance were evaluated. ...
  • Design and Modeling of the Properties of the Servomechanism for a Mobile Free Space Optical Link 

    Cizmar, J.; Nemecek, J. (Společnost pro radioelektronické inženýrství, 2014-04)
    The paper deals with the design of a tracking system determined for mobile free space optical link communication system. The paper also contains description of two-step method of the optical-axes pointing process, description ...
  • Improved Energy Detector for Wideband Spectrum Sensing in Cognitive Radio Networks 

    Eghbali, Y.; Hassani, H.; Koohian, A.; Ahmadian-Attari, M. (Společnost pro radioelektronické inženýrství, 2014-04)
    In this paper, an improved energy detector for a wideband spectrum sensing is proposed. For a better detection of the spectrum holes the overall band is divided into equal non-overlapping sub-bands. The main objective is ...
  • Low-Voltage High-Linearity Wideband Current Differencing Transconductance Amplifier and Its Application on Current-Mode Active Filter 

    Xu, J.; Wang, C.; Jin, J.; Xia, Z. (Společnost pro radioelektronické inženýrství, 2014-04)
    A low-voltage high-linearity wideband current differencing transconductance amplifier (CDTA) is presented in this paper. The CDTA consists of a current differencing circuit and a cross-coupling transconductance circuit. The ...