A5018619147- Electromagnetic Fields and Biological Effects
- Power Line Communications and Noise
- Electromagnetic Compatibility and Measurements
- Energy Harvesting in Wireless Networks
- Cognitive Radio Networks and Spectrum Sensing
- Wireless Body Area Networks
- Millimeter-Wave Propagation and Modeling
- Advanced MIMO Systems Optimization
- Antenna Design and Analysis
- Electromagnetic Compatibility and Noise Suppression
- Age of Information Optimization
- Green IT and Sustainability
- Advanced Algorithms and Applications
- Thermal Radiation and Cooling Technologies
- Distributed Sensor Networks and Detection Algorithms
- Advanced Adaptive Filtering Techniques
- Smart Grid Security and Resilience
- Advanced Wireless Communication Technologies
- Wireless Communication Networks Research
Nicolae Bălcescu Land Forces Academy
2016-2022
Technical University of Cluj-Napoca
2018-2021
The paper investigates the possibility of using Software Defined Radio (SDR) platforms in assessing exposure to electromagnetic radiation emitted by sources specific 3G and 4G generations. Critical parameters SDR that can limit their performance are sampling frequency receiving resolution analog digital converter (ADC). performed tests showed 8-bit ADC has an influence on amplitude's dynamic range, i.e. when evaluating high-level signals (greater than -40 dBm), accuracy is consistently...
The paper presents the design and implementation of an electromagnetic field monitoring sensor for measurement Terrestrial Truncked Radio (TETRA) signals using low-cost software defined radio (SDR) platforms. includes: SDR platform, a Global Positioning System (GPS) module hardware control module. Several platforms having different resolutions analog–digital converters were tested in first phase. was implemented two variants: fixed one, laptop, mobile Raspberry Pi. tests demonstrate...
In the last years, Software Defined Radio (SDR) platforms, as a result of facilities offered, have become attractive for applications in field electromagnetic monitoring. Present work aimed to implement cheap monitoring system trace signals specific Terrestrial Trunked (TETRA) standard and check its capabilities. The chosen solution is based on ADALM-PLUTO SDR platform controlled by Raspberry Pi 4 device. Testing demonstrated following performances: 5.12 MHz instantaneous acquisition band;...
The measurement of realistic exposure levels quasi - stochastic signals from the IEEE 802.11ac communication standard was achieved by applying complementary cumulative distribution function mode a real time spectrum analyzer connected to laptop. Statistics were used highlight differences between data transfer directions.
Frequencies higher than 3 GHz are today of extreme interest for the agile human exposimetry. Current approach proposes and demonstrates capability a statistic method to report 4G/4G+ wireless applications usage impact on factor by providing results regarding: a) energy density accumulation rate in air near emitting device (instantaneous average); b) observation peculiarities time-distribution emitted field strengths during certain application/device/network/moment time usage.
This paper presents the design, implementation and testing of a broadband real-time electromagnetic field monitoring system. The system is based on Software Defined Radio (SDR) platform that allows three synchronous reception channels. tests have been performed both in laboratory conditions case measuring signals emitted by wireless device connected to 4G communication network. results showed has capabilities for channel with bandwidth at least 10MHz.
Abstract This paper presents preliminary research for the implementation and testing of a Software Defined Radio (SDR) sensor with electromagnetic spectrum monitoring capabilities measuring signals specific to Long-TermEvolution (LTE) mobile communications standard. The proposed is developed on ADALM Pluto SDR platform - designed acquire bandwidth at least 20MHz. To determine spatial extent measurements, also includes GPS (Global Positioning System) module. hardware control performed both in...
Abstract We present a short analysis of the prediction quality offered by Radio Mobile application when used for frequency band TETRA systems in Romania. The simulation results provided were compared against own measurements made multiple locations Sibiu city. correlation coefficient between simulated and measured values signal power was 0.907 while maximum variation data strings 9.6 dB average standard deviation 4.4 dB. These indicate that radio propagation model ‘Two-ray Irregular Terrain...
In the present article we propose a solution based on Software Defined Radio for isotropic, real-time, and simultaneous measurement of six channels corresponding to field probes (electric magnetic). The system is much needed exposure evaluation campaigns conducted in near emitting devices (mobile phone, WLAN router, etc.). However, use an SDR pose other problems that need careful precise solving, report accurate levels. To this extent, work calibration instrument model USRP N310 n78 5G...
The paper is focused on the electromagnetic exposure assessment in proximity of a Terrestrial Trunked Radio (TETRA) terminal. For first time distinct measurements electric field component (E) and magnetic (H) are presented distance range 8-20 cm. results show that E-field has greater prevalence exposure. Maximum values 100% for E, 17% H respectively were encountered near terminal, if compared to occupational limits given ICNIRP protective guidelines.
The paper aims to analyze the electromagnetic field components in near of a high frequency (HF) emission antenna. typical case dipole antenna emitting Near Vertical Incident Skywave (NVIS) HF signals at two frequencies (3.6 MHz and 7.1 MHz) 100 W input power is being discussed. measurements have highlighted places around where levels are high, from perspective safe exposure radiation. Thus, it was found that on line situated just beneath parallel antenna, electric strength may exceed safety...
The paper investigates the accuracy of assessing exposure to radiation emitted by sources specific IEEE 802.11n communication standard two methods. first one is based on weighing maximum power channel measured in frequency domain and second uses complementary cumulative distribution function (CCDF) acquisition mode a real-time spectrum analyzer. It has been demonstrated that CCDF method much proper be applied case quasi-stochastic signals such as WLAN's.