Browsing 2014/2 by Issue Date
Now showing items 1-20 of 23
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ECCCII-Based Current-Mode Universal Filter with Orthogonal Control of w_o and Q
(Společnost pro radioelektronické inženýrství, 2014-06)This paper presents a new current-mode current-controlled four-input five-output universal filter employing one current-controlled current conveyor (CCCII), one electronically tunable CCCII and two grounded capacitors. The ... -
Performance Analysis of Best Relaying Protocol Selection with Interferences at Relays
(Společnost pro radioelektronické inženýrství, 2014-06)In this paper, we investigate the performance of selecting the best protocol between amplify and forward (AF) and decode and forward (DF) in multiple relay networks with multiple interferences at relays. In the selection ... -
Method of Measuring Common-Mode Current Conversion Coefficient for Estimating Variation in Radiated Emission from Printed Circuit Board Components
(Společnost pro radioelektronické inženýrství, 2014-06)This work describes the measurement of the common-mode current conversion coefficient for a microstrip line with solid and slotted ground planes by using a VNA with a BCI probe. The radiated emissions estimated by the ... -
A Novel T-Fed 4-Element Quasi-Lumped Resonator Antenna Array
(Společnost pro radioelektronické inženýrství, 2014-06)In this paper, electrically small corporately T-fed quasi-lumped element resonator antenna array is investigated. The radiating element, a quasi-lumped element resonator is excited by a novel semi hybrid ring-like T-shaped ... -
Estimation of Most Favorable Optical Window Position Subject to Achieve Finest Optical Control of Lateral DDR IMPATT Diode Designed to Operate at W-Band
(Společnost pro radioelektronické inženýrství, 2014-06)The optimum position of the optical window (OW) of illuminated lateral double-drift region (DDR) impact avalanche transit time (IMPATT) device has been determined subject to achieve the finest optical control of both DC ... -
Radio Sensor for Monitoring of UMTS Mobile Terminals
(Společnost pro radioelektronické inženýrství, 2014-06)Relatively simple and low-cost radio sensor for monitoring of 3rd generation (3G) UMTS mobile terminals (i.e., phones) has been designed and practically tested. The main purpose of this sensor is to serve as an extending ... -
The Effects of the Active Hypoxia to the Speech Signal Inharmonicity
(Společnost pro radioelektronické inženýrství, 2014-06)When the people are climbing on the mountain, they are exposed to decreased oxygen concentration in the tissue, which is commonly called the active hypoxia. This paper addressed the problem of an acute hypoxia that affects ... -
Monthly and Diurnal Variability of Rain Rate and Rain Attenuation during the Monsoon Period in Malaysia
(Společnost pro radioelektronické inženýrství, 2014-06)Rain is the major source of attenuation for microwave propagation above 10 GHz. In tropical and equatorial regions where the rain intensity is higher, designing a terrestrial and earth-to-satellite microwave links is very ... -
Box-Particle Cardinality Balanced Multi-Target Multi-Bernoulli Filter
(Společnost pro radioelektronické inženýrství, 2014-06)As a generalized particle filtering, the box-particle filter (Box-PF) has a potential to process the measurements affected by bounded error of unknown distributions and biases. Inspired by the Box-PF, a novel implementation ... -
Motion Capture System for Finger Movement Measurement in Parkinson Disease
(Společnost pro radioelektronické inženýrství, 2014-06)Parkinson’s disease (PD) is a chronic neurodegenerative disorder that affects almost 1% of the population in the age group above 60 years. The key symptom in PD is the restriction of mobility. The progress of PD is typically ... -
2D Iterative MAP Detection: Principles and Applications in Image Restoration
(Společnost pro radioelektronické inženýrství, 2014-06)The paper provides a theoretical framework for the two-dimensional iterative maximum a posteriori detection. This generalization is based on the concept of detection algorithms BCJR and SOVA, i.e., the classical (one-dimensional) ... -
Mixed Power Control Strategies for Cognitive Radio Networks under SINR and Interference Temperature Constraints
(Společnost pro radioelektronické inženýrství, 2014-06)Without consideration of the minimum signal-to-interference-plus-noise ratio (SINR) and frequent information exchange, traditional power control algorithms can not always satisfy SINR requirements of secondary users (SUs) ... -
Motion Detection Using Adaptive Temporal Averaging Method
(Společnost pro radioelektronické inženýrství, 2014-06)Motion detection methods are widely integrated in modern intelligent video surveillance systems. Many of these methods use background subtraction techniques to separate the foreground objects from the background. Temporal ... -
Backscatter Transponder Based on Frequency Selective Surface for FMCW Radar Applications
(Společnost pro radioelektronické inženýrství, 2014-06)This paper describes an actively-controlled frequency selective surface (FSS) to implement a backscatter transponder. The FSS is composed by dipoles loaded with switching PIN diodes. The transponder exploits the change in ... -
Ricean K-Factor Measurements and Analysis for Wideband High-Speed Railway Channels at 2.35 GHz
(Společnost pro radioelektronické inženýrství, 2014-06)This paper presents the analysis of Ricean K-factor for wideband high-speed railway channels at 2.35 GHz, based on radio channel measurements under viaduct and U-shape cutting scenarios. We characterize the K-factor from ... -
Quantization Noise Cancellation of Fractional-N Frequency Synthesizers Using Pre-distortion Technique
(Společnost pro radioelektronické inženýrství, 2014-06)This work proposes a novel pre-distortion technique for the quantization noise cancellation of fractional-N frequency synthesizers. The proposed technique utilizes the coordinate rotation digital computer (CORDIC) algorithm ... -
Design of Multi-Antenna System for UMTS Clamshell Mobile Phones with Ground Plane Effects Considerations
(Společnost pro radioelektronické inženýrství, 2014-06)In this paper, the influence of the ground plane dimensions on the port-to-port isolation of two closely-spaced Universal Mobile Telecommunications System (UMTS) Planar Inverted-F Antennas (PIFAs) with and without ... -
New Full-Diversity Space-Time-Frequency Block Codes with Simplified Decoders for MIMO-OFDM Systems
(Společnost pro radioelektronické inženýrství, 2014-06)Multiple-input multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) is known as a promising solution for wideband wireless communications. This is why it has been considered as a powerful candidate for ... -
Performance Improvement in Passive Backscatter Based RFID System with Low DCR Modulations
(Společnost pro radioelektronické inženýrství, 2014-06)This paper presents application of the low Duty Cycle Ratio (DCR) modulations: isochronous Digital Pulse Position Modulation (DPPM) and anisochronous Digital Pulse Interval Modulation (DPIM) in backscatter based passive ... -
Fundamental Behavior Analysis of Single-Frequency Sine Wave Forced Oscillator based on Linear Model and Multi-Time Technique
(Společnost pro radioelektronické inženýrství, 2014-06)In this article, an excited oscillator which is analyzed by using a multi-time linear analytical model is proposed. An obtained closed-form solution can be exploited not only to explain phenomena in the beat and locked ...