Browsing 2020/4 by Title
Now showing items 1-10 of 10
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Analysis of Chiral and Achiral Medium Based Coplanar Waveguide Using Improved Full Generalized Exponential Matrix Technique
(Společnost pro radioelektronické inženýrství, 2020-12)In this work, an analytical study of the electromagnetic propagation in a complex medium-based suspended three-layer coplanar waveguide (CPW) is carried out. The study aims at a numerical calculation of the dominant hybrid ... -
Coherence Optimized Channel Estimation for Mm-Wave Massive MIMO
(Společnost pro radioelektronické inženýrství, 2020-12)Mm-wave MIMO communication makes a hybrid combination of analog RF and digital baseband processing more attractive, where digital baseband precoders/combiners able to adapt to the pre-defined analog (switch based) RF ... -
Compact Ultra Wide-Band and Tri-Band Antenna for Portable Device
(Společnost pro radioelektronické inženýrství, 2020-12)A compact ultra-wideband (UWB) and triband patch antenna with the partial ground plane is presented in this paper. Initially, the antenna is designed for UWB applications, operating at the UWB portion of the spectrum ranging ... -
Design of Miniaturized SIW Filter Loaded with Open-Loop Resonators and Its Application to Diplexer
(Společnost pro radioelektronické inženýrství, 2020-12)This paper presents a novel design of miniaturized substrate-integrated waveguide (SIW) filter loaded with a pair of unit-cell resonators. Two identical open-loop resonators are connected face-to-face to form a unit-cell. ... -
Estimating the Characteristics of the Forward Voltage Gain Scattering Parameter of Indoor Power Line Channel Using Only Input Port Measurement
(Společnost pro radioelektronické inženýrství, 2020-12)Estimation of the characteristics of power line channel is a pre-requisite for successful implementation of any power line communication system. This paper presents a method to estimate the forward voltage gain scattering ... -
Full Duplex Relaying in Non Orthogonal Multiple Access System with Advanced Successive Interference Cancellation
(Společnost pro radioelektronické inženýrství, 2020-12)This paper describes a full-duplex (FD) cooperative non orthogonal multiple access (NOMA) system with dedicated relay under residual self-interference (RSI). An advanced successive interference cancellation (ASIC) technique ... -
High Capacity and Secure Watermarking for Medical Images Using Tchebichef Moments
(Společnost pro radioelektronické inženýrství, 2020-12)Using Tchebichef Moments, this study has introduced a new method for imperceptible watermarking of the medical images with a high embedding capacity and robustness against the various attacks. The suggested method applies ... -
An Independently Biased 3-stacked GaN HEMT Power Amplifier for Next-Generation Wireless Communication Systems
(Společnost pro radioelektronické inženýrství, 2020-12)In this paper, a design of 3-stacked GaN highelectron-mobility transistor radio-frequency power amplifier employing an independently biased technique is presented to meet stringent requirements of next-generation wireless ... -
The Influence of the Bitrate Level on the Subjective Sound Quality Perception of the Concatenated Non-Entropic Audio Coding Algorithms in the Digital Broadcasting Chain
(Společnost pro radioelektronické inženýrství, 2020-12)Digital Audio Broadcasting (DAB) and all similar systems for digital radio and television broadcasting are inevitably associated with lossy psychoacoustic audio compression. The coding algorithms are continuously being ... -
Performance Analysis and Comparison of Anomaly-based Intrusion Detection in Vehicular Ad hoc Networks
(Společnost pro radioelektronické inženýrství, 2020-12)Security and safety applications of Vehicular Ad hoc Networks (VANETs) are developed to improve the traffic flow. While safety applications in VANETs provide warnings and information for the vehicle and other units in the ...