Recent Submissions

  • Watermarking FPGA Bitfile for Intellectual Property Protection 

    Zhang, J.; Lin, Y.; Wu, Q.; Che, W. (Společnost pro radioelektronické inženýrství, 2012-06)
    Intellectual property protection (IPP) of hardware designs is the most important requirement for many Field Programmable Gate Array (FPGA) intellectual property (IP) vendors. Digital watermarking has become an innovative ...
  • Downlink Video Streaming for Users Non-Equidistant from Base Station 

    Pejoski, S.; Kafedziski, V. (Společnost pro radioelektronické inženýrství, 2012-06)
    We consider multiuser video transmission for users that are non-equidistantly positioned from base station. We propose a greedy algorithm for video streaming in a wireless system with capacity achieving channel coding, ...
  • Low-Voltage Ultra-Low-Power Current Conveyor Based on Quasi-Floating Gate Transistors 

    Khateb, F.; Khatib, N.; Kubanek, D. (Společnost pro radioelektronické inženýrství, 2012-06)
    The field of low-voltage low-power CMOS technology has grown rapidly in recent years; it is an essential prerequisite particularly for portable electronic equipment and implantable medical devices due to its influence on ...
  • A Modified Bipolar Translinear Cell with Improved Linear Range and Its Applications 

    Merz, N.; Kiranon, W.; Wongtachathum, C.; Pawarangkoon, P.; Narksarp, W. (Společnost pro radioelektronické inženýrství, 2012-06)
    This paper presents a technique to extend the linear input voltage range of a sinh mixed translinear cell proposed by Fabre [1]. This technique extends the linear operation range of the circuit by inserting common-anode-connected ...
  • A novel JPEG steganography method based on modulus function with histogram analysis 

    Banoci, V.; Bugar, G.; Levicky, D.; Klenovicova, Z. (Společnost pro radioelektronické inženýrství, 2012-06)
    In this paper, we present a novel steganographic method for embedding of secret data in still grayscale JPEG image. In order to provide large capacity of the proposed method while maintaining good visual quality of ...
  • Design of a 2.4 GHz High-Performance Up-Conversion Mixer with Current Mirror Topology 

    Wan, Q. Z.; Wang, C. H.; Yu, F. (Společnost pro radioelektronické inženýrství, 2012-06)
    In this paper, a low voltage low power up-conversion mixer, designed in a Chartered 0.18 μm RFCMOS technology, is proposed to realize the transmitter front-end in the frequency band of 2.4 GHz. The up-conversion mixer uses ...
  • Third-order Intermodulation Reduction in Mobile Power Amplifiers by the First Stage Bias Control 

    Jung, J. H.; Kwak, C. H.; Lee, J. S. (Společnost pro radioelektronické inženýrství, 2012-06)
    In this paper, the third order intermodulation distortion (IMD3) of three-stage power amplifier (PA) is analyzed using the Volterra series. The analysis explains how the total IMD3 of the three-stage power amplifier can ...
  • A CMOS DCCII with a Grounded Capacitor Based Cascadable All-Pass Filter Application 

    Metin, B.; Herencsar, N.; Vrba, K. (Společnost pro radioelektronické inženýrství, 2012-06)
    The differential current conveyor (DCCII) is a versatile current-mode active element, which has a current differencing capability. In this study, a new CMOS DCCII implementation is introduced. As an application example, a ...
  • Time-Scale Domain Characterization of Time-Varying Ultrawideband Infostation Channel 

    Chude-Okonkwo, U. A. K.; Ngah, R.; Leow, C. Y.; Rahman, T. A. (Společnost pro radioelektronické inženýrství, 2012-06)
    The time-scale domain geometrical-based method for the characterization of the time varying ultrawideband (UWB) channel typical of an infostation channel is presented. Compared to methods that use Doppler shift as a measure ...
  • High Dynamic Range RF Front End with Noise Cancellation and Linearization for WiMAX Receivers 

    Wu, J.-M.; Yeh, C.-H.; Chuang, C.-J. (Společnost pro radioelektronické inženýrství, 2012-06)
    This research deals with verification of the high dynamic range for a heterodyne radio frequency (RF) front end. A 2.6 GHz RF front end is designed and implemented in a hybrid microwave integrated circuit (HMIC) for worldwide ...
  • Linear Phase Second Order Recursive Digital Integrators and Differentiators 

    Jain, M.; Gupta, M.; Jain, N. (Společnost pro radioelektronické inženýrství, 2012-06)
    In this paper, design of linear phase second order recursive digital integrators and differentiators is discussed. New second order integrators have been designed by using Genetic Algorithm (GA) optimization method. ...
  • Achievable Outage Rates In Cognitive Radio Networks under Imperfect Spectrum Sensing 

    Tafaghodi Khajavi, N.; Sadough, S. M. S. (Společnost pro radioelektronické inženýrství, 2012-06)
    In this paper, we aim at deriving the outage rates achieved by the primary user due spectrum sensing in a cognitive radio network, that we call sensing-induced primary outage rates. To reach this goal, in the first step, ...
  • Universality and Realistic Extensions to the Semi-Analytic Simulation Principle in GNSS Signal Processing 

    Jakubov, O.; Kacmarik, P.; Kovar, P.; Vejrazka, F. (Společnost pro radioelektronické inženýrství, 2012-06)
    Semi-analytic simulation principle in GNSS signal processing bypasses the bit-true operations at high sampling frequency. Instead, signals at the output branches of the integrate&dump blocks are successfully modeled, thus ...
  • Noise Parameters of CW Radar Sensors Used in Active Defense Systems 

    Jenik, V.; Hudec, P.; Panek, P. (Společnost pro radioelektronické inženýrství, 2012-06)
    Active defense represents an innovative way of protecting military vehicles. It is based on the employment of a set of radar sensors which detect an approaching threat missile and activate a suitable counter-measure. Since ...
  • Hybrid Coding Technique for Pulse Detection in an Optical Time Domain Reflectometer 

    Sheikh Muhammad, S.; Mehmood, H.; Naseem, A.; Abbas, A. (Společnost pro radioelektronické inženýrství, 2012-06)
    The paper introduces a novel hybrid coding technique for improved pulse detection in an optical time domain reflectometer. The hybrid schemes combines Simplex codes with signal averaging to articulate a very sophisticated ...
  • Wall Compensation for Ultra Wideband Applications 

    Muqaibel, A. H.; Iya, N. M.; Johar, U. M. (Společnost pro radioelektronické inženýrství, 2012-06)
    Due to their low frequency contents, ultra wideband (UWB) signals have the ability to penetrate walls and obstacles. As the signal propagates through these obstacles, it gets attenuated, slows down, and gets dispersed. ...
  • Cross-Correlation-Function-Based Multipath Mitigation Method for Sine-BOC Signals 

    Chen, H. H.; Jia, W. M.; Yao, M. L. (Společnost pro radioelektronické inženýrství, 2012-06)
    Global Navigation Satellite Systems (GNSS) positioning accuracy indoor and urban canyons environments are greatly affected by multipath due to distortions in its autocorrelation function. In this paper, a cross-correlation ...
  • Dual-Mode Dual-Band Microstrip Bandpass Filter Based on Fourth Iteration T-Square Fractal and Shorting Pin 

    Ahmed, E. S. (Společnost pro radioelektronické inženýrství, 2012-06)
    A new class of dual mode microstrip fractal resonator is proposed and developed for miniaturization of the dual band bandpass filter. The perimeter of the proposed resonator is increased by employing fourth iteration ...
  • Miniaturized Wideband Bandpass Filter with Wide Stopband using Metamaterial-based Resonator and Defected Ground Structure 

    Chaimool, S.; Akkaraekthalin, P. (Společnost pro radioelektronické inženýrství, 2012-06)
    This paper presents a miniaturized wideband bandpass filter with wide stopband performance. It is shown that the coupled metamaterial-based resonators (MBRs) incorporating with the defected ground structure (DGS) can ...
  • A Multiband CPW-Fed Slot Antenna with Fractal Stub and Parasitic Line 

    Hongnara, T.; Mahattanajatuphat, C.; Akkaraekthalin, P.; Krairiksh, M. (Společnost pro radioelektronické inženýrství, 2012-06)
    This paper presents a multiband CPW-fed slot antenna with fractal stub and parasitic line. The conventional wideband slot antenna with fractal stub is modified by inserting the parasitic line surrounding the fractal stub ...

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