Wyświetlanie pozycji 1-20 z 21

  • Reduced-complexity Non-data-aided Timing Recovery for PAM-based M-ary CPM Receivers 

    Wang, Yonggang; Liu, Aijun; Guo, Daoxing; Liu, Xian (Společnost pro radioelektronické inženýrství, 2012-09)
    Continuous phase modulation (CPM) is a widely used modulation scheme in communication systems. However, difficulties arise with the design of CPM receivers, due to the nonlinear nature of CPM. One popular solution is to ...
  • Empirical Relations for Optical Attenuation Prediction from Liquid Water Content of Fog 

    Khan, M. S.; Grabner, M.; Muhammad, S. S.; Awan, M. S.; Leitgeb, E.; Kvicera, V.; Nebuloni, R. (Společnost pro radioelektronické inženýrství, 2012-09)
    Simultaneous measurements of the liquid water content (LWC) and optical attenuation have been analyzed to predict optical attenuation caused by fog particles. Attenuation has been measured at two different wavelengths, 830 ...
  • Distributed Clustering in Cognitive Radio Ad Hoc Networks Using Soft-Constraint Affinity Propagation 

    Zhang, Jianzhao; Yao, Fuqiang; Zhao, Hangsheng (Společnost pro radioelektronické inženýrství, 2012-09)
    Absence of network infrastructure and heterogeneous spectrum availability in cognitive radio ad hoc networks (CRAHNs) necessitate the self-organization of cognitive radio users (CRs) for efficient spectrum coordination. ...
  • Nature-inspired Cuckoo Search Algorithm for Side Lobe Suppression in a Symmetric Linear Antenna Array 

    Abdul Rani, Khairul Najmy; Abd Malek, Mohd. Fareq; Siew-Chin, Neoh (Společnost pro radioelektronické inženýrství, 2012-09)
    In this paper, we proposed a newly modified cuckoo search (MCS) algorithm integrated with the Roulette wheel selection operator and the inertia weight controlling the search ability towards synthesizing symmetric linear ...
  • Improved Design and Implementation of Variational Bayesian Iterative Receivers 

    Modarresi, Mohammad; Sadough, Seyed Mohammad-Sajad (Společnost pro radioelektronické inženýrství, 2012-09)
    It was recently shown that detection performance can be significantly improved if the statistics of channel estimation errors are available and properly used at the receiver. Although deriving the statistics of channel ...
  • Two-dimensional Tissue Image Reconstruction Based on Magnetic Field Data 

    Dedkova, Jarmila; Ostanina, Ksenia (Společnost pro radioelektronické inženýrství, 2012-09)
    This paper introduces new possibilities within two-dimensional reconstruction of internal conductivity distribution. In addition to the electric field inside the given object, the injected current causes a magnetic field ...
  • Class of Recursive Wideband Digital Differentiators and Integrators 

    Upadhyay, Dharmendra K. (Společnost pro radioelektronické inženýrství, 2012-09)
    New designs of recursive digital differentiators are obtained by optimizing a general fourth-order recursive digital filter over different Nyquist bands. In addition, another design of recursive digital differentiator is ...
  • Performance Improvement of QPSK Signal Predetection EGC Diversity Receiver 

    Nikolic, Bojana; Dimitrijevic, Bojan; Milosevic, Nenad; Dordevic, Goran T. (Společnost pro radioelektronické inženýrství, 2012-09)
    This paper proposes a modification of quadrature phase-shift-keying (QPSK) signal diversity reception with predetection equal gain combiner (EGC). The EGC combining is realized by using the constant modulus algorithm (CMA). ...
  • Outage Probability and Power Allocation for Two-Way DF Relay Networks with Relay Selection 

    Fan, Zhangjun; Guo, Daoxing; Zhang, Bangning (Společnost pro radioelektronické inženýrství, 2012-09)
    In this paper, we investigate the outage probability and power allocation for the two-way decode-and-forward (DF) relay networks with relay selection.~Specially, we consider independent but not necessarily identical ...
  • Microstrip Cross-coupled Interdigital SIR Based Bandpass Filter 

    Maharjan, Ram Krishna; Shrestha, Bhanu; Kim, Nam-Young (Společnost pro radioelektronické inženýrství, 2012-09)
    A simple and compact 4.9 GHz bandpass filter for C-band applications is proposed. This paper presents a novel microstrip cross-coupled interdigital half-wavelength stepped impedance resonator (SIR) based bandpass filter ...
  • Design of Stacked Microstrip Dual-band Circular Polarized Antenna 

    Zakaria, Norhanani; Rahim, Sharul Kamal Abdul; Ooi, Thean Song; Tan, Kim Geok; Reza, Ahmed Wasif; Rani, Mohd Subri Abdul (Společnost pro radioelektronické inženýrství, 2012-09)
    This study introduces a new design of dual-band circular polarized (CP) microstrip antenna for ISM band applications (2.45 GHz and 5.8 GHz). The proposed dual-band CP microstrip antenna with compact design has achieved ...
  • Planar Resonators for Metamaterials 

    Blaha, Michal; Machac, Jan (Společnost pro radioelektronické inženýrství, 2012-09)
    This paper presents the results of an investigation into a combination of electric and magnetic planar resonators in order to design the building element of a volumetric metamaterial showing simultaneously negative electric ...
  • Segmentation of Speech and Humming in Vocal Input 

    Sporka, Adam J.; Polacek, Ondrej; Havlik, Jan (Společnost pro radioelektronické inženýrství, 2012-09)
    Non-verbal vocal interaction (NVVI) is an interaction method in which sounds other than speech produced by a human are used, such as humming. NVVI complements traditional speech recognition systems with continuous control. ...
  • Symbolical Analysis of RF-Network Problems using Mason’s Rule 

    Schwerg, Nikolai (Společnost pro radioelektronické inženýrství, 2012-09)
    We briefly review Mason’s rule for the computation of RF-network problems and show its implementation into the software package freeMASON. This tool solves symbolically Mason’s rule for any wave quantity and allows to ...
  • MISO Current-mode Biquad Filter with Independent Control of Pole Frequency and Quality Factor 

    Jaikla, Winai; Siripongdee, Surapong; Suwanjan, Peerawut (Společnost pro radioelektronické inženýrství, 2012-09)
    This article presents a three-inputs single-output biquadratic filter performing completely standard functions: low-pass, high-pass, band-pass, band-reject and all-pass functions, based on current controlled current conveyor ...
  • Efficient Analysis of Ferrite Loaded Waveguides Using the MRFD Method 

    Gokten, Mesut (Společnost pro radioelektronické inženýrství, 2012-09)
    A full wave two-dimensional Multiresolution Frequency Domain formulation for efficient analysis of the dispersion characteristics of ferrite loaded waveguide structures is developed and presented. It has been concluded ...
  • The Spectrum Sharing in Cognitive Radio Networks Based on Competitive Price Game 

    Li, Yi-bing; Yang, Rui; Lin, Yun; Ye, Fang (Společnost pro radioelektronické inženýrství, 2012-09)
    The competitive price game model is used to analyze the spectrum sharing problem in the cognitive radio networks, and the spectrum sharing problem with the constraints of available spectrum resource from primary users is ...
  • Multiple Timescale Energy Scheduling for Wireless Communication with Energy Harvesting Devices 

    Xiao, Hua; Shao, Huaizong; Yang, Kai; Yang, Fan; Wang, Wenqin (Společnost pro radioelektronické inženýrství, 2012-09)
    The primary challenge in wireless communication with energy harvesting devices is to efficiently utilize the harvesting energy such that the data packet transmission could be supported. This challenge stems from not only ...
  • Developing Model-Based Design Evaluation for Pipelined A/D Converters 

    Struhovsky, Petr; Subrt, Ondrej; Hospodka, Jiri; Martinek, Pravoslav (Společnost pro radioelektronické inženýrství, 2012-09)
    This paper deals with a prospective approach of modeling, design evaluation and error determination applied to pipelined A/D converter architecture. In contrast with conventional ADC modeling algorithms targeted to extract ...
  • Energy-efficient Power Allocation Strategy in Cognitive Relay Networks 

    Zhang, Zongsheng; Wu, Qihui; Wang, Jinlong (Společnost pro radioelektronické inženýrství, 2012-09)
    Cognitive radio and cooperative technique are two essential techniques for the future generation green communication paradigm owing to its inherent advantages of adaptability and cognition. Typically, previous studies on ...