2018/4
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Recent Submissions
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Bit Error Probability of M-QAM under Impulsive Noise and Fading Modeled by Markov Chains
(Společnost pro radioelektronické inženýrství, 2018-12)This article presents new exact expressions, written in terms of elementary transcendental functions, for calculating the bit error probability of M-ary Quadrature Amplitude Modulation (M-QAM) scheme considering the wireless ... -
An Unambiguous Tracking Technique for Cosine-Phased BOC Signals with Low Complexity
(Společnost pro radioelektronické inženýrství, 2018-12)A low-complexity unambiguous tracking method for cosine-phased binary offset carrier (BOCc) signals is proposed in this paper. The proposed method directly constructs a code discriminator function by multiplying two ... -
Efficient Procedure Improving Precision of High Conditioned Matrices in Electronic Circuits Analysis
(Společnost pro radioelektronické inženýrství, 2018-12)In this article, we propose several improvements that could be done to SPICE simulator. The first is based on a functional implementation of device models. The advantages of functional implementation are demonstrated on ... -
Wide Range High Precision CMOS Exponential Circuit Based on Linear Least Squares Approach
(Společnost pro radioelektronické inženýrství, 2018-12)A new strategy to implement exponential circuit in CMOS technology is presented in this paper. The proposed method is based on the new approximation function optimized by linear least squares approach to extend the output ... -
Chained-Function Filter Synthesis Based on the Modified Jacobi Polynomials
(Společnost pro radioelektronické inženýrství, 2018-12)A new class of filter functions with pass-band ripple which derives its origin from a method of determining the chained function lowpass filters described by Guglielmi and Connor is introduced. The closed form expressions ... -
TRL-based Measurement of Embedded Circuits in Microwave Printed Circuit Boards Including Frequency Conversion
(Společnost pro radioelektronické inženýrství, 2018-12)The paper deals with the measurement of individual components or circuits embedded in more complex radio frequency (RF) or microwave printed circuit board (PCBs). Since no standard RF measurement enables the direct parallel ... -
A Compact Dual-Band Negative Group Delay Microwave Circuit
(Společnost pro radioelektronické inženýrství, 2018-12)A compact dual-band negative group delay circuit (NGDC) is proposed. The proposed NGDC is composed of an open-circuited transmission line and two resistors connected by two transmission lines. The frequency ratio is ... -
Wideband Time Reversal of Microwave Signals Based on Phase Conjugating
(Společnost pro radioelektronické inženýrství, 2018-12)A phase conjugating network to realize wideband time reversal of microwave signals is studied in this paper. After discussions on the operation principle of the reversed signal in the time and frequency domains, a prototype ... -
The DVB-T-Based Positioning System and Single Frequency Network Offset Estimation
(Společnost pro radioelektronické inženýrství, 2018-12)As position information becomes more and more important in many fields of technology it is advantageous to recognize it in scenarios where satellite-based systems fail. Such a case is the scenario inside buildings where ... -
Evaluation of EEG-based Complementary Features for Assessment of Visual Discomfort based on Stable Depth Perception Time
(Společnost pro radioelektronické inženýrství, 2018-12)The investigation aimed at the evaluation of EEG activity during stereoscopic perception of images with different levels of visual comfort. Different levels of disparity and the number of details in stereoscopic views in ... -
Robust Hybrid Algorithm of PSO and SOCP for Grating Lobe Suppression and against Array Manifold Mismatch
(Společnost pro radioelektronické inženýrství, 2018-12)Based on Particle Swarm Optimization (PSO) and Second-Order Cone Programming (SOCP) algorithm, this paper proposes a hybrid optimization method to suppress the grating lobes of sparse arrays and improve the robustness of ... -
PD Source Location Utilizing Acoustic TDOA Signals in Power Transformer by Fuzzy Adaptive Particle Swarm Optimization
(Společnost pro radioelektronické inženýrství, 2018-12)Acoustic Emission Partial discharge (AEPD) Location is one of the techniques utilized by many transformer manufacturers and power utility engineers in routine and critical situation for optimal operation of the electrical ... -
Determination of Base Station Emission Power Change in a Mobile Network Cell with Movable Users
(Společnost pro radioelektronické inženýrství, 2018-12)This paper considers base transceiver station (BTS) emission power change in the cell-organized mobile network with dynamic power control, due to users’ moving. Such power adjustment contributes to energy saving and ... -
Generalized Roughness Bearing Faults Diagnosis Based on Induction Motor Stator Current
(Společnost pro radioelektronické inženýrství, 2018-12)Despite their reliability, induction motors tend to fail. Around 41% of faults in motors are bearing related and that is the most common fault in motor field. Due to the lack of research on generalized roughness bearing ... -
FBMC Transmitters with Reduced Complexity
(Společnost pro radioelektronické inženýrství, 2018-12)Filter Bank MultiCarrier (FBMC) modulation is currently considered as one of the key enablers for future 5G technologies. In the literature, two approaches are applied for the modulation of FBMC signals: Frequency Spreading ... -
Compact Electronically Reconfigurable WiMAX Band- Notched Ultra-wideband MIMO Antenna
(Společnost pro radioelektronické inženýrství, 2018-12)A low-profile electronically reconfigurable WiMAX band-notched dual port multiple-input multipleoutput (MIMO) antenna design for ultra-wideband application has been presented. The two symmetrical MIMO antenna elements ... -
Phase Quantized Metasurface Reflectors for X-band Laguerre Gaussian Vortex Beam Generation
(Společnost pro radioelektronické inženýrství, 2018-12)From last two decade, there is an exponential growth in consumption of available bandwidth in the radio frequency spectrum. To challenge this issue, improvement in channel capacity is getting huge research attention. ... -
Dual-Band Compact Metamaterial-Inspired Absorber with Wide Incidence Angle and Polarization Insensitivity for GSM and ISM Band Applications
(Společnost pro radioelektronické inženýrství, 2018-12)A dual-band metamaterial inspired microwave absorber composed of concentric two crossed double-arrow shaped resonators, ring resonator with four splits at the corners and square ring resonator is presented. The proposed ... -
A Design of Microstrip Lowpass Filter with Wide Rejection Band and Sharp Transition Band Utilizing Semi-Circle Resonators
(Společnost pro radioelektronické inženýrství, 2018-12)In this paper, a microstrip lowpass filter with -3 dB cut-off frequency of 2.1 GHz consisting of three cascaded resonators with different semi-circle patches and four suppressors employing radial stubs has been proposed. ... -
Floating Hemispherical Helical Antenna: Analysis of Gain, Efficiency and Resonant Frequency
(Společnost pro radioelektronické inženýrství, 2018-12)This paper reports the effect of seawater conductivity on gain, efficiency and resonant frequency of a hemispherical helical antenna. The size of the copper ground plane for the hemispherical antenna can be reduced using ...
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