Education.
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2017 Accreditation to supervise research
Sidi Mohammed ben Abdellah University, Morocco.
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2012 PHD in transmission and information processing
Sidi Mohammed ben Abdellah University, Morocco.
Events.
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ICCSC 2023 Chair of 2023 International Conference on Circuit, Systems and Communication
July 07-08, 2023, Fez, Morocco
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ICPES 2022 Chair of 2022 International Conference on Physical and Engineering Sciences
29-30 May, 2022, Istanbul, Turkey.
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MECST 2020 Program Chair International Workshop on Microwave Engineering, Communications Systems and Technologies
6-9 April, 2020, Warsaw, Poland
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MECST 2019 Program Chair International Workshop on Microwave Engineering, Communications Systems and Technologies
Apr 29, 2019 - May 2, 2019. Leuven, Belgium
Research.
Massive MIMO systems
OFDM technique
5G/6G applications
Terahertz Technologies
I am really interested in MIMO Antenna Designs ...
intelligence systems
Publications.
Design and Optimization of a Compact Microstrip Bandpass Filter Using on Open Loop Rectangular Resonators for Wireless Communication Systems
Khardioui, Y. , Elbakkar, K. , El Alami, A. , El Ghzaoui, M
Lecture Notes in Networks and Systems, 2024
A New Miniaturized Ultra-Wideband High-Isolated Two-Port MIMO Antenna for 5G Millimeter-Wave Applications
Elalaouy, O. , El Ghzaoui, M. , Foshi, J.
Lecture Notes in Networks and Systems, 2024
ACPM modulation implementation using blind equalizer and non-coherent demodulation for 5G and beyond
El Ghzaoui, M.
International Journal of System Assurance Engineering and Management, 2024
A Compact Wideband Printed 4 × 4 MIMO Antenna with High Gain and Circular Polarization Characteristics for mm-wave 5G NR n260 Applications
Kiouach, F. , El Ghzaoui, M. , Das, S. , Islam, T. , Madhav, B.T.P.
Wireless Personal Communications, 2024
Novel Microstrip Bandpass Filter for 5G mm-Wave wireless communications
Kiouach, Fatima; Aghoutane, Bilal; El Ghzaoui, Mohammed
e-Prime - Advances in Electrical Engineering, Electronics and Energy, 2023
Implementation and analysis of recombination techniques within the receiver for IoT based applications
Elaage, S., EL Ghzaoui, M., Mrani, N., El Alami, R.
Wireless Networks, 2023
Radiation Performance Improvement of a Staircase Shaped Dual Band Printed Antenna with a Frequency Selective Surface (FSS) for Wireless Communication Applications
Prasad, N., Pardhasaradhi, P., Madhav, B.T.P., ...Das, S., Ghzaoui, M.E.
Progress In Electromagnetics Research C, 2023, 137, pp. 53–64
Comparative Study of the Performance of Different Modulations in FSO Communication over a Turbulent Channel with Pointing Error | Порівняльне дослідження ефективності різних модуляцій у FSO: зв'язок по турбулент-ному каналу з помилкою вказівки
Fakchich, A., Bouhadda, M., El Alami, R., ...El Ghzaoui, M., Medikondu, N.R.
Journal of Nano- and Electronic Physics, 2023, 15(3), 03021
Performance of BPSK-FSO Communication Over Turbulence and Fog Attenuation
Fakchich, A., Bouhadda, M., Alami, R.E., ...Qjidaa, H., Jamil, M.O.
Lecture Notes in Networks and Systems, 2023, 668 LNNS, pp. 326–334
Design and Analysis of a Slot Antenna Array with a Defected Ground Plan for Millimeter Wave Application
Kiouach, F., El Ghzaoui, M., El Alami, R., ...Jamil, M.O., Qjidaa, H.
Lecture Notes in Networks and Systems, 2023, 668 LNNS, pp. 289–298
Machine Learning with Reinforcement for Optimal and Adaptive Learning
Rahioui, F., El Ghzaoui, M., Jouti, M.A.T., Jamil, M.O., Qjidaa, H.
Lecture Notes in Networks and Systems, 2023, 669 LNNS, pp. 142–149
Modeling and Analysis of Short Distance Terahertz Communication Channel
Elaage, S., El Ghzaoui, M., Mrani, N., ...Jamil, M.O., Qjidaa, H.
Lecture Notes in Networks and Systems, 2023, 669 LNNS, pp. 289–297
A New Four Ports Multiple Input Multiple Output Antenna with High Isolation for 5G Mobile Application
Nasri, N.E.H., Ghzaoui, M.E., Fattah, M., Jamil, M.O., Qjidaa, H.
Lecture Notes in Networks and Systems, 2023, 669 LNNS, pp. 264–271
Machine Learning Algorithms for Early and Accurate Diabetic Detection
Chaaouan, H., Bouhadda, M., El Alami, R., ...Qjidaa, H., Jamil, M.O.
Lecture Notes in Networks and Systems, 2023, 668 LNNS, pp. 938–948
Normalized Gradient Min Sum Decoding for Low Density Parity Check Codes
El Ouakili, H., Ghzaoui, M.E., Jamil, M.O., Qjidaa, H., Alami, R.E.
Lecture Notes in Networks and Systems, 2023, 668 LNNS, pp. 536–542
Machine Learning for Data Flow Processing in Learning Process
Rahioui, F., Jouti, M.A.T., El Ghzaoui, M., ...Das, S., Singh, R.
2023 International Conference on Artificial Intelligence and Smart Communication, AISC 2023, 2023, pp. 357–360
A Compact Two-port MIMO Array Antenna for ISM/5G NR/WLAN Band Applications | Компактна двопортова антенна MIMO-матриця для додатків діапазону ISM/5G NR/WLAN
Elalaouy, O., Varakumari, S., El Ghzaoui, M., Foshi, J., Das, S.
Journal of Nano- and Electronic Physics, 2023, 15(1), 01027
A Low-profile Wideband Two Ports MIMO Antenna Working at 38 GHz for mm-wave 5G Applications | Низькопрофільна широкосмугова антена з двома портами MIMO, що працює на частоті 38 ГГц для додатків 5G мм-хвиль
Kiouach, F., El Ghzaoui, M., Varakumari, S., El Alami, R., Das, S.
Journal of Nano- and Electronic Physics, 2023, 15(1), 01025
A Metamaterial Inspired Multiband Conformal Bandpass Filter with Improved Quality factor for Sub-6 GHz Wireless Communication Applications
Journal of Circuits, Systems and Computers, 2023.
This paper deals with the design, simulation, and practical modeling of meta-material-based multiband conformal Bandpass filter (BPF) for various wireless communication applications with improved quality factors. The novel metamaterial in the form of a Split ring resonator is loaded...
Performance Analysis of a Photonic Crystals Embedded Wideband (1.41–3.0 THz) Fractal MIMO Antenna Over SiO2 Substrate for Terahertz Band Applications
Silicon, 2023.
Advances in recent communication systems require minimal weight, low cost, high performance and low-profile antenna to meet the demand for next generation wireless communication devices. Due to the saturation velocity, high electrical conductivity and high mobility, graphene ...
A miniaturized folded square split ring resonator cell based dual band polarization insensitive metamaterial absorber for C-and Ku-band applications
Optical and Quantum Electronics, Volume 55, 2023.
In this article, a compact dual-band metamaterial absorber (MMA) is suggested for the purpose of solid materials sensing in the C- and Ku-wireless bands. The proposed MMA is formed by a basic cell based on a novel shape of the folded arms square split ring resonator (FAS-SRR). ...
A Quad-Port Design of a Bow-Tie Shaped Slot loaded Wideband (24.2-30.8 GHz) MIMO Antenna Array for 26/28 GHz mm-Wave 5G NR n257/n258/n260 band Applications
Journal of Circuits, Systems and Computers, 2023.
This article describes a four-port MIMO antenna array design featuring bow-tie shaped slot-loaded patches with wideband capabilities that covers the frequency range from 24.2 GHz to 30.8 GHz. The proposed antenna design is printed on an FR4 substrate and occupies an area of 25× 24 mm². ...
Near zero index Metamaterial-based SIW antenna for 6G Sub-Terahertz applications
Results in Optics, Volume 12 , 2023.
This paper introduces a novel high-gain circularly polarized (CP) antenna that utilizes a NRZI (Near Zero Refractive Index) and MNG (Mu Negative) metamaterial slab. The antenna employs a substrate integrated waveguide (SIW) technique and loaded with compact square split ring resonator (SSRR) ...
A Compact Wideband (22-44 GHz) Printed 2× 4 MIMO Array Antenna with High Gain for 26/28/38 GHz Millimeter-Wave 5G Applications
Journal of Circuits, Systems and Computers, Volume , 2023.
In this proposed work, a novel multiple input multiple output (MIMO) array antenna system with a large bandwidth and high gain has been simulated, analyzed, fabricated, and measured. The proposed antenna is structured in 2× 4 patch configuration along with a cross shaped ground plane loaded with four square and one circular shaped defect ...
Broadband sub-6 GHz flower-shaped MIMO antenna with high isolation using theory of characteristic mode analysis (TCMA) for 5G NR bands and WLAN applications
International Journal of Communication Systems, Volume , 2023.
A small size neutralization line integrated flower-shaped MIMO antenna is designed and analyzed for sub-6 GHz type 5G NR frequency bands like n79 (4400–5000 MHz), n78 (3300–3800 MHz), n77 (3300–4200 MHz), and WLAN (5150–5825 MHz) applications. The novel approach of theory of characteristic mode analysis (TCMA) is introduced to provide physical insight of the designed structure and its characteristics behavior ...
Optimum GMSK Based Transceiver Model for Cellular IoT Networks
Simulation Modelling Practice and Theory,102756, Volume125 , 2023.
A small size neutralization line integrated flower-shaped MIMO antenna is designed and analyzed for sub-6 GHz type 5G NR frequency bands like n79 (4400–5000 MHz), n78 (3300–3800 MHz), n77 (3300–4200 MHz), and WLAN (5150–5825 MHz) applications. The novel approach of theory of characteristic mode analysis (TCMA) is introduced to provide physical insight of the designed structure and its characteristics behavior ...
The Realization of 5G Network Booster Using Various Types of Antennas
Artificial Intelligence and Smart Environment, 903-910, Springer International Publishing , 2023
Given the fact that the network in some regions is weak, this paper aimed at realizing a 5G network booster circuit. To achieve this objective, we suggested resolving this shortage by adopting an adequate circuit in which we implemented different types of antennas in numerous iterations to increase the network strength and reduce the response time. The core of this idea is a simple scheme that makes use of two helical antennas ...
A New Four-Ports MIMO Antenna for 5G IoT Applications
Artificial Intelligence and Smart Environment, 78-85, Springer International Publishing , 2023.
Unlike other mobile network technologies, 5G is a disruptive technology. Because 5G can address not only the general public but also major economic sectors for B2B (Business to Business) uses. So that, the implementation of 5G system is harsh task. Antenna is one of the important element to implement 5G technology. In this regard, this paper deals with the design of defected ground structure ...
A circularly polarized super wideband transparent optical nanoantenna for advanced THz communication applications
Optical and Quantum Electronics, Volume55, 2023.
This paper investigates a nano-scaled patch antenna in optical frequency range. The proposed nanoantenna consists of a circular patch of dimension 130 × 130 nm2, placed on a glass substrate with thickness 112 nm. To protect the antenna against environmental jeopardies, a superstrate layer of dimensions 40 × 2.5 × 110.4 nm3 has been added. To enhance the performance of the antenna in terms of bandwidth and efficiency and to obtain circular polarization
A circularly polarized wideband high gain antenna for THz wireless applications
Optical and Quantum Electronics, Volume54, 2022.
For several years, the fields of new technologies have been experiencing a real boom. The use of the terahertz band is an appropriate solution to meet the requirements of these technology. However, this technology has special requirements among which its antennas must have high bandwidth of few THz and achieve high gain for high productivity.
Performance analysis of multiband on–off keying pulse modulation with noncoherent receiver for THz applications
Microwave and Optical Technology Letters, Volume64, 2022.
The choice of modulation and waveform is a crucial step for generating a radio signal and designing a wireless communication system. Toward this end, a compromise between low‐complexity and high‐data rate had to be considered when selecting the appropriate transmission technique.
A dual wideband high gain 2 × 2 multiple-input-multiple-output monopole antenna with an end-launch connector model for 5G millimeter-wave mobile applications
International Journal of RF and Microwave Computer‐Aided Engineering, Volume32, 2022.
This article presents the design, analysis, and realization of a new printed multiple-input-multiple-output (MIMO) antenna with a very high gain and wide bandwidth for the millimeter-wave (mm-wave) 28/38 GHz fifth generation (5G) new radio (NR) applications..
Terahertz Wireless Communication Components and System Technologies
Springer Nature. BOOK.
The prime objective of this book is devoted to feature the research developments in the design aspects of advanced components and systems for terahertz wireless technologies. This field of research is becoming quite popular today. Indeed, many THz components have been developed and the research field is still expanding.
A novel dual band high gain 4-port millimeter wave MIMO antenna array for 28/37 GHz 5G applications
AEU-International Journal of Electronics and Communications, Volume145, 2022.
A new 4-port dual-band printed Multi-Input Multi-Output (MIMO) antenna array operating at 28 GHz and 38GHzin the mm-wave band for 5G communications is proposed in this paper. The designed MIMO antenna array consists of 4 MIMO elements structured with 8 identical patches arranged in 2× 4 configuration and a cross-shaped defected ground plane on a physical footprint of 43.611× 43.611× 0.4 m m 3 Rogers RT/duroid 5880 substrate.
A Flower-Shaped Quad-Port Dual-Band MIMO Antenna of 29/39 GHz Millimeter-Wave for 5G Applications
Journal of Nano- and Electronic Physics, Volume14, 2022.
This research presents a flower-shaped design of a multi-input multi-output (MIMO) antenna with dual wide operating bands in the millimeter-wave (MMW) region proposed for 5G applications. The antenna system consists of a quad-port antenna array placed with a 90-degree shift; it was etched on a low-cost FR-4 dielectric substrate with a full size of 22x22x1 mm3.
Investigation of Radio Channel Characterization in Terahertz Range
Journal of Nano- and Electronic Physics, Volume14, 2022.
To determine the performance of a wireless system, channel characterization must be carried out. In fact, in a wireless system, the propagation of an electromagnetic wave in space is of particular importance. For this reason, it is necessary to study the correctness of this channel before starting to work on it and implementing it in a communication system
Analysis and Design of an Ultra-Wideband Non-coherent Transceiver for UWB Pulse Radio Communications in the Terahertz Band
Journal of Nano- and Electronic Physics, Volume14, 2022.
Interest in terahertz (THz) technology is related to various applications such as object detection, spectroscopy, security, and telecommunications. However, one of the challenges of THz technology is the implementation of effective communication between the transmitter and the receiver. Modulation technique like orthogonal frequency division multiplexing (OFDM) is already used in the THz band.
Performance Analysis of EOS and SDI Detectors in THz Band
Springer Nature
Over time, scientists and engineers exploited the frequency bands of the electromagnetic spectrum. Starting with the visible spectrum, they gradually developed sources and detectors operating at lower and higher frequencies. First, the frequency band between 0.1 and 30 THz, called terahertz (THz), has not been fully exploited. On the other hand, with the current development of communication and broadband, many parts of the electromagnetic spectrum are saturated.
Compact Two Ports MIMO Antenna Operating at Terahertz Band
Springer Nature
The THz frequencies are the new revolution in the telecommunication due to theirs several advantages this paper will propose a MIMO patch antenna polyimide based that is capable to function at THz frequencies. The performance of the proposed antenna has been analyzed in term of multiple antenna characteristics such as impedance bandwidth (GHz), gain (dB), return loss (dB), and VSWR.
An Analytical Model of Propagation Channels for Terahertz Wireless Communication System
Springer Nature
Multipath channels cause large differences between transmitted and received signals. These variations depend on time, frequency and space. Since we cannot act on the transmission channel, it becomes a drawback for signal transmission. So, the interest in characterizing and modeling the transmission channel takes on its full meaning.
MIMO Channels Modeling for Terahertz Radio Communications Systems
Springer Nature
THz channel is a multipath channel that causes large differences between transmitted and received signals. To do transmission over this environment, the channel model must be realized. In fact, modeling the THz channel will allow researchers to develop the THz communication system, as well as to establish an effective communication algorithm, which could improve the data transmission.
MIMO-OFDM Technique Over Terahertz Radio Channels
Springer Nature
Wireless communications require more and more communication speed. One solution to meet this growing demand is the use of the millimeter band. In fact, it has been already shown that a system operating in millimeter bands offers communication speeds of several gigabits. This drew the attention of researchers to work on the THz band. This made this band a candidate for future 5G communications systems.
A Compact Penta-Band Printed Monopole Antenna for Multiple Wireless Communication Systems
Springer Nature
A compact offset microstrip line-fed printed multiband monopole antenna is proposed. In this work, the suggested antenna operates at multiple resonant frequencies due to the incorporation of narrow parallel slits and a hammer-shaped slot on the radiating patch with a modified ground plane. The proposed antenna has been configured on a 26 × 25 mm2 FR-4 substrate ( 4.4 and thickness = 1.6 mm).
Channel Characterization and CE-OFDM Modulation for Terahertz System
Springer Nature
In wireless communication systems, the transmission channel constitutes the medium separating the transmitter from the receiver. Due to the growing demand for wireless systems in terms of data rate, it is necessary to look for new technology to support this need. Nowadays, The interest of Terahertz (THz) technology is growing increasingly. Indeed, THz technology indeed has the potential to provide ultra-fast data rate of Terabit-per-second (Tbps)
Investigation on Antennas for Terahertz Applications
Springer Nature
Terahertz (THz) antennas are achievements benefit in many applications. The interest of THz technology has been growing steadily since the creation of Terahertz Interest Group in 2008. By its unique characteristics, THz technology indeed has the potential to provide very high-data rate for wireless communication system. However, the atmospheric absorption presents in THz communication system cause high path losses.
A Survey of NOMA for 5G: Implementation Schemes and Energy Efficiency
Springer Nature
The 5th generation (5G) Network technology must meet various stringent necessities such as high spectral efficiency, low energy consumption and immense connectivity. Current wireless communication system uses radio resources to transmit data with Orthogonal Multiple Access (OMA). But, as the number of user’s growths, OMA-based technique might not meet user requirements. That why, NOMA has been introduced to fulfil the challenges of 5G network.
A Modified E-Shaped Compact Printed Antenna for 28 GHz 5G Applications
Springer Nature
A single band printed antenna with a modified E-shaped structure is proposed for 5G applications at 28 GHz band. The suggested antenna has been constructed on a 5.5 4.35 mm2 FR-4 substrate ( and ) through slot loading technique. The incorporation of rectangular and tiny square shaped slots has improved the resonance and radiation characteristics of the designed antenna.
A compact high gain wideband millimeter wave 1× 2 array antenna for 26/28 GHz 5G applications
Circuit World, Volume47, 2021.
This paper aims to present the design, fabrication and analysis of a wideband, enhanced gain 1 × 2 patch antenna array with a simple profile structure to meet the desired antenna traits, such as wide bandwidth, high gain and directional patterns expected for the upcoming fifth-generation (5G) wireless applications in the millimeter wave band.
A Novel PM-OFDM-CDMA System for 5G Wireless Communication with High Capacity and Low Energy Consumption
ASM Sc. J., Volume16, 2021.
Phase Modulation Orthogonal Frequency Division Multiplexing (PM-OFDM) and Code Division Multiple Access (CDMA) have distinctive advantages. On one hand, PM-OFDM is an attractive technique to combat multipath fading and reduce high PAPR in conventional OFDM. On the other hand, CDMA has the ability to serve multiple users at the same time and/or frequency. In this article, a new PM-OFDM-CDMA system that combines PM-OFDM and CDMA is proposed.
Theoretical Analysis and Performance Comparison of multi-carrier Waveforms for 5G Wireless Applications
International Journal of Integrated Engineering, Volume13, 2021.
5G wireless technology is a new wireless communication system that must meet different complementary needs: high data rate for mobile services, low energy consumption and long-range for connected objects, low latency to ensure real-time communication for critical applications and high spectral efficiency to improve the overall system capacity. The waveforms and associated signals processing, present a real challenge in the implementation for each generation of wireless communication networks.
Performance Analysis of Oversampled OFDM over PLC Network
Journal of Nano-and Electronic Physics, Volume13, 2021.
A solution that today interests a good number of industrialists consists in using the most dense and ubiquitous network: the electricity network. Communication over energy line, commonly known as PLC (Power Line Communications), makes it possible to consider a completely different type of electrical local loop. The main advantage of such a network relies to the ubiquity of the infrastructure, both inside and outside buildings, thus, making it possible to considerably limit the costs of network deployment.
Investigation of Equivalent Circuit Model for a 5G Microstrip Patch Antenna
Journal of Nano-and Electronic Physics, Volume13, 2021.
In recent years, we are witnessing an exponential development of new applications and technologies in the fields of health, media, industry, transport, energy. This evolution goes hand in hand with the emergence of new services related to a multiplication of connected objects. Faced with these challenges, a new revolution is coming with a new standard of mobile telecommunications systems, referred to as 5G technology.
Patch Antennas with T-Match, Inductively Coupled Loop and Nested-slots Layouts for Passive UHF-RFID Tags
Journal of Nano-and Electronic Physics, Volume13, 2021.
The objective of this article is to study the performance of the RFID (Radio Frequency Identification) technology and especially the passive UHF RFID (Ultra High Frequency RFID) tags by mean of simulation. In this paper, three patch antennas with different matching techniques for passive UHF-RFID tags are proposed.
Modeling and Characteristics of a 3 dB Hybrid Coupler for 5G Applications
Journal of Nano-and Electronic Physics, Volume13, 2021.
The 3 dB, 90 coupler is a passive device with four ports that allows each output to collect half the input power but in phase quadrature. The 3 dB coupler is often made in microstrip technology where different quarter-wave sections are present to ensure impedance matching. In order to be able to design a duplexer operating on several frequency bands, a tunable hybrid coupler was designed in this work.
Analysis, design and fabrication of a square slot loaded (SSL) millimeter-wave patch antenna array for 5G applications
Journal of Circuits, Systems and Computers, Volume30, 2021.
A new compact 1 X 4 microstrip patch antenna array design for future 5G applications is presented in this paper. The proposed antenna array consists of square slot loaded with four radiating patch elements. The corporate feed network has been implemented for the excitation of the array.The feed line is connected to the square slot patch through a quarter-wave transformer matching network. The proposed array is ..
Spatial characterization of propagation channels for terahertz band
SN Applied Sciences, Volume3, 2021.
The aim of this work consists in characterizing the Terahertz (THz) propagation channel in an indoor environment, in order to propose a channel model for THz bands. We first described a propagation loss model by taking into account the attenuation of the channel as a function of distance and frequency.The impulse response of the channel is then described by a set of rays, characterized by their amplitude, ..
MB-OOK transceiver design for terahertz wireless communication systems
International Journal of Systems, Control and Communications, Volume12, 2021.
The first step to design an efficient terahertz (THz) system is to find out suitable waveforms and modulation schemes that can be used in THz wireless system. Towards this end, a compromise between low-complexity and high data-rate had to be considered when selecting the appropriate transmission technique..
CE-OFDM-CDMA Phase Modulation for 5G System
International Journal of Mathematical, Engineering and Management Sciences, Volume6, 2021.
In the present work, we propose a novel modulation scheme for 5G wireless communication system. Our contribution is to combine PM-OFDM (Phase Modulation Orthogonal Frequency Division Multiplexing) and CDMA (Code Division Multiple Access) to exploit their distinctive advantages. On the one hand, PM-OFDM is an effective technique to combat multipath fading effects.
Performance Analysis of Oversampled OFDM for a Terahertz Wireless Communication System
Book : Advances in Terahertz Technology and Its Applications,Springer, Singapore.
Thanks to the development of wireless communication technology, the whole world has become a small village, especially in the last 10 years. In fact, there are several reasons for this revolution, the most important of which is the transition to higher frequencies that would allow high-speed data transmission. In order to reach this high speed, it is necessary to increase the frequency up to ten terahertz (THz).
Performance Analysis of Oversampled OFDM for a Terahertz Wireless Communication System
BookChapter : Advances in Terahertz Technology and Its Applications,Springer, Singapore.
Thanks to the development of wireless communication technology, the whole world has become a small village, especially in the last 10 years. In fact, there are several reasons for this revolution, the most important of which is the transition to higher frequencies that would allow high-speed data transmission. In order to reach this high speed, it is necessary to increase the frequency up to ten terahertz (THz).
Monopole Patch Antenna to Generate and Detect THz Pulses
BookChapter : Advances in Terahertz Technology and Its Applications,Springer, Singapore.
The use of electromagnetic waves is a powerful tool for observing and understanding the world around us. From the infinitely large and distant, electromagnetic waves allow us to “see” objects and analyze them through spectroscopy. The tremendous scope of the electromagnetic spectrum multiplies the fields of observation and applications. Far infrared is a specific region of the electromagnetic spectrum with frequencies typically between 0.3 and 20 terahertz (THz).
Compact Dual Wideband Open-Ended Ring Shaped Slot Loaded Printed Monopole Antenna for X Band Applications
Journal of Nano-and Electronic Physics, Volume 13, 2021
A low cost dual band offset fed monopole microstrip antenna is proposed in this paper. The suggested antenna is designed using an inexpensive 1.6 mm thick fr-4 substrate of relative permittivity 4.4. The design and analysis of the proposed antenna model have been performed using HFSS software. By inserting a square slot loaded with an inverted metallic structure in the patch and the presence of a partial ground plane, dual band operation with ...
Investigation of Equivalent Circuit Model for a 5G Microstrip Patch Antenna
Journal of Nano-and Electronic Physics, Volume 13, 2021
In recent years, we are witnessing an exponential development of new applications and technologies in the fields of health, media, industry, transport, energy. This evolution goes hand in hand with the emergence of new services related to a multiplication of connected objects. Faced with these challenges, a new revolution is coming with a new standard of mobile telecommunications systems, referred to as 5G technology...
Patch Antennas with T-Match, Inductively Coupled Loop and Nested-slots Layouts for Passive UHF-RFID Tags
Journal of Nano-and Electronic Physics, Volume 13, 2021
The objective of this article is to study the performance of the RFID (Radio Frequency Identification) technology and especially the passive UHF RFID (Ultra High Frequency RFID) tags by mean of simulation. In this paper, three patch antennas with different matching techniques for passive UHF-RFID tags are proposed..
Modeling and Characteristics of a 3 dB Hybrid Coupler for 5G Applications
Journal of Nano-and Electronic Physics, Volume 13, 2021
TThe 3 dB, 90° coupler is a passive device with four ports that allows each output to collect half the input power but in phase quadrature. The 3 dB coupler is often made in microstrip technology where different quarter-wave sections are present to ensure impedance matching.In order to be able to design a duplexer operating on several frequency bands, a tunable hybrid coupler was designed in this work..
Performance Analysis of Oversampled OFDM over PLC Network
Journal of Nano-and Electronic Physics, Volume 13, 2021
A solution that today interests a good number of industrialists consists in using the most dense and ubiquitous network: the electricity network. Communication over energy line, commonly known as PLC (Power Line Communications), makes it possible to consider a completely different type of electrical local loop. The main advantage of such a network relies to the ubiquity of the infrastructure,..
OFDM for Terahertz Wireless Communication Systems
Journal of Nano-and Electronic Physics, Volume 13, 2021
Terahertz (THz) communication is one of the suitable technologies for the upcoming 5G and 6G standards. In fact, THz frequencies cover the electromagnetic spectrum between 0.1 and 30 THz or 3 mm and 10 µm in wavelength. The limits of this domain started at the confines of radio frequencies and cover the frequent spectrum which extends until the beginning of the infrared domain...
Compensation of non-linear distortion effects in MIMO-OFDM systems using constant envelope OFDM for 5G applications
Journal of Circuits, Systems and Computers, Volume29, 2020
Orthogonal frequency division multiplexing (OFDM) is a multicarrier transmission system that can achieve high data rate over wireless channels. At the same time, multiple input multiple output OFDM (MIMO-OFDM) in wireless communication systems has been exposed to offer significant improvement over wireless technology by providing transmit diversity...
Performance analysis of CE-OFDM-CPM Modulation using MIMO system over wireless channels
Journal of Ambient Intelligence and Humanized Computing, Volume11, 2020
Orthogonal Frequency-Division Multiplexing (OFDM) is a multicarrier modulation that has expanded attractiveness and is used for wireless communication system. However one key weakness of OFDM signal is the high Peak-to-Average Power Ratio (PAPR). The high PAPR of OFDM signal cause nonlinear distortions by the power amplifier, which in turn affects negatively the OFDM transmission signal. ...
Millimeter wave antenna with enhanced bandwidth for 5G wireless application
Journal of Instrumentation, Volume15, 2020
5G has been planned to meet the strong data advancement and accessibility of the present society. In the proposed work, a new rectangular antenna that has high bandwidth millimeter-wave, stable radiation patterns, and improved reflection coefficient at 28 GHz for future 5G applications, has been designed and fabricated. The FR-4 substrate having a very compact dimension (5.5× 4.35) mm 2 with a dielectric constant of 4.4, the thickness of...
BER performance of CE-OFDM system: over AWGN channel and frequency-selective channel using MMSE equalization
Book:Embedded Systems and Artificial Intelligence
The fifth generation (5G) wireless network technology is to be standardized by 2020, where main goals are to improve capacity, reliability, and energy efficiency. Constant envelope orthogonal frequency division multiplexing (CE-OFDM) is a technique to modify the OFDM signal with high peak-to-average power ratio (PAPR) to a constant envelope zero decibel PAPR waveform,...
Data transmission with terahertz communication systems
Book:Emerging trends in terahertz solid-state physics and devices
The need for high bandwidth in wireless systems has been increased because there is always unoccupied bandwidth for the current communication system. Therefore, the extension of communication systems to higher frequencies is required to offer high-capacity wireless applications. In order to achieve high capacity, the carrier frequencies requisite should be increased more than 100 GHz. Nowadays, academics are currently working on wireless communication...
Data transmission with terahertz communication systems
Book:Emerging trends in terahertz solid-state physics and devices
The need for high bandwidth in wireless systems has been increased because there is always unoccupied bandwidth for the current communication system. Therefore, the extension of communication systems to higher frequencies is required to offer high-capacity wireless applications. In order to achieve high capacity, the carrier frequencies requisite should be increased more than 100 GHz. Nowadays, academics are currently working on wireless communication...
Design of a high gain 2* 1 patch array for fifth generation wireless applications
IEEE. 7th Mediterranean Congress of Telecommunications (CMT)
5G advancements will revolutionize the manner in which most high bandwidth speed clients get to their wireless application. In this paper, a broadband square slotted 2 ×1 slotted patch antenna array has been proposed for 5G cellular applications operating at 30 GHz. The slotted antenna array has been designed and simulated on FR4 substrate with relative permittivity εr of 4,3. Having dimensions...
A Looped Slots Patch Antenna for Passive UHF RFID Tags Applications in Metallic Supports
IEEE. 7th Mediterranean Congress of Telecommunications (CMT)
In this letter, a looped slots patch antenna for passive UHF-RFID tags applications in metallic supports is presented. By adopting a three-layer substrate on antenna design, an antenna gain of 2.5 dB on metallic objects is achieved; and by embedding a looped slots on the radiating body, an overall size of the antenna of...
A Looped Slots Patch Antenna for Passive UHF RFID Tags Applications in Metallic Supports
IEEE. 7th Mediterranean Congress of Telecommunications (CMT)
In this letter, a looped slots patch antenna for passive UHF-RFID tags applications in metallic supports is presented. By adopting a three-layer substrate on antenna design, an antenna gain of 2.5 dB on metallic objects is achieved; and by embedding a looped slots on the radiating body, an overall size of the antenna of...
Simulation of Some Factors Influencing the Transfer Function of PLC Network
Book: Proceedings of the 4th International Conference on Big Data and Internet of Things
Power line communications (PLC) network is one of the promising communication technologies for data transmission and information exchange in indoor distribution networks, because it does not require any new wiring installations, which can significantly reduce the deployment costs. This network is a practical solution for connecting all computer and multimedia devices to each other and to the telecommunication network, ...
Gain enhancement of a looped slots patch antenna for passive UHF RFID tags applications in metallic supports
International Journal on Communications Antenna and Propagation, Volume9, 2019
The objects with high conductivity such as metals consist of a challenge for passive RFID (Radio Frequency IDentification) tags in UHF (Ultra High Frequency) due to their effects on tags antennas performance. In this paper, a passive antenna for UHF RFID tags applications on metallic supports is presented. The antenna structure is constituted of a rectangular patch with looped slots printed on three-layer substrate and deposited ...
Investigation of Rectifiying circuit topologies for rectenna conception for Microwave Power Transmission System Applications at 2.45 GHz
IEEE: International Conference on Wireless Technologies, Embedded and Intelligent Systems (WITS)
This paper presents the implementation and evaluation of rectifier prototype and diode modelling. Our design is based on the optimization of a compact rectifier circuit with single Schottky diode HSMS-2820 for MPT (Microwave Power Transmission) Applications at frequency 2.45 GHz. This rectifying method is used to transform an alternating signal into a mono-alternating signal (unidirectional) at 2.45 GHz. These Schottky diodes are specifically ...
BER performance improvement in CE-OFDM-CPM system using equalization techniques over frequency-selective channel
Procedia Computer Science, Volume151, 2019
One key weakness of multicarrier signals such as OFDM (Orthogonal frequency division multiplexing) is the high peak-to-average power ratio (PAPR). Nonlinear distortions caused by the power amplifier are aggravated by high PAPR, which in turn affects the OFDM signal. These nonlinearities in amplifiers cause both inter-Symbol interference (ISI) and inter-carrier interference (ICI) in the system...
Design and simulation of RFID array antenna 2x1 for detection system of objects or living things in motion
Procedia Computer Science, Volume151, 2019
This paper presents the improvement of radiation characteristics performances of the RFID array antenna for detection system of objects or living things in motion. The proposed array antenna is composed of two identical elements, connected in parallel via simple microstrip line divider, having a power port adapted to 50 Ω. This array is designed using RT/duroid-5880 substrate with the following parameters ...
Millimeter-wave microstrip antenna array design for future 5G cellular applications
IEEE: International Conference on Electronics, Control, Optimization and Computer Science (ICECOCS)
5G denotes the next major phase of mobile telecommunications standards beyond the current 4G, which will operate at millimeter-wave frequency band. In any wireless device, the design of an efficient antenna has a positive impact on overall system performance. This paper presents a high gain millimeter-wave microstrip antenna array with a simple profile structure - Operating at 29.8 GHz ...
Novel miniaturized folded line antenna for passive UHF RFID tags
International Journal on Communications Antenna and Propagation, Volume8, 2018.
RFID (Radio Frequency IDentification) in UHF (Ultra High Frequency) has received considerable attention due to the different advantages offered in various fields. The tags in this technology must be attached to small objects. Therefore, the antennas size needs to be miniaturized without significant degradation. In this paper, a novel miniaturized tag antenna for UHF RFID applications is presented. ...
Performance evaluation of a passive UHF RFID tag antenna using the embedded T-Match structure
IEEE: International Conference on Wireless Technologies, Embedded and Intelligent Systems (WITS)
The impedance matching between an RFID IC (Radio Frequency IDentification-Integrated Circuit) and an RFID tag antenna is of a critical importance in RFID tag design. A poor match impedance results in less power delivered to the RFID IC and poor antenna performance that lead to poor communication between the reader and the tag. In this work, we search to match the input impedance ...
Etude analytique et expérimentale du réseau PLC
Éditions universitaires européennes, 2017.
The impedance matching between an RFID IC (Radio Frequency IDentification-Integrated Circuit) and an RFID tag antenna is of a critical importance in RFID tag design. A poor match impedance results in less power delivered to the RFID IC and poor antenna performance that lead to poor communication between the reader and the tag. In this work, we search to match the input impedance ...
Design of a smart RFID tags antenna using an inductively coupled loop
Conference: TELECOM'2017 & 10èmes JFMMA.
RFID (Radio Frequency IDentification) is a rapidly developing technology for automatic identification of objects, this technology has received considerable attention precisely at Ultra High Frequency (UHF) due to the different advantages offered in different fields. In this paper, we matched impedance of a smart antenna intended for passive UHF RFID applications ...
PAPR Reduction in CE-OFDM System for Numerical Transmission via PLC Channel
International Journal on Communications Antenna and Propagation (IRECAP).
Power Line Communications have been the subject of an important research work. At the same time, the growing demand for multimedia communications provides a good prospect for PLC as a promising transmission technique for the “last mile” access network. Orthogonal Frequency Division Multiplexing (OFDM) is a spectrally efficient multicarrier ...
Action of EM Disturbances on the Availability and Range of Indoor PLC Transmitters and Impact of Radiation on the Environment around Channel
Current Journal of Applied Science and Technology, Volume8, 2015.
The use of power lines for transmission of broadband data for applications such as Internet access or home automation, is certainly very attractive, but the problem of electromagnetic interference and radiated caused by these new systems. Risk of interference to radio reception is mainly approached in the frequency band ranging from 1 MHz to 30 MHz allocated to power line communication (PLC) and covers including HF...
Peak to Average Power Ration Reduction in OFDM System Using Constant Envelope for Transmission via PLC Channel
Progress In Electromagnetics Research, Volume1541, 2011.
Power Line Communications have been the subject of an important research work. At the same time, the growing demand for multimedia communications provides a good prospect for PLC as a promising transmission technique for the “last mile” access network. Orthogonal Frequency Division Multiplexing (OFDM) is a spectrally efficient multicarrier modulation technique for high speed data transmission over multipath fading channels. ...
Performance Evaluation of CE-OFDM in PLC Channel
Signal Processing: An International Journal (SPIJ), Volume4, 2011.
One major drawback associated with an OFDM system is that the transmitter’s output signal may have a high peak-to-average ratio (PAPR). High levels of PAR may be a limiting factor for power line communication (PLC) where regulatory bodies have fixed the maximum amount of transmit power. To overcome this problem, many approaches have been presented in the literature....
Power efficiency improvement in CE-OFDM System with 0 dB IBO for transmission over PLC network
Signal Processing: An International Journal (SPIJ), Volume5, 2011.
Orthogonal frequency division multiplexing (OFDM) OFDM has been adopted for high speed data transmission of multimedia traffic such as HomePlug A/V and Mobile WiMax. However, OFDM also has a drawback of a high PAPR (peak-to-average-power-ratio). Due to this high PAPR amplifier usually does not act in dynamic range. One potential solution for reducing the peak-to-average power ratio (PAPR) in an OFDM system is to utilize....
Modulation OFDM Suréchantillonnée pour l’Amélioration de la Transmission Haut débit sur Canal CPL
Revue Méditerranéenne des Télécommunications, Volume1, 2011.
Au cours des dernières années, on assiste à une expansion de la transmission multimédia via la technologie courants porteurs en lignes (CPL). La plupart des travaux sur CPL ont opté pour la modulation multi-porteuse OFDM (Orthogonal Frequency Division Multiplexing) comme technique de transmission. Mais cette modulation, basée sur une mise en forme spectrale rectangulaire, possède des inconvénients notables comme une densité spectrale....
Teaching.
Contact.
- Computer Science, Signals, Automation and Cognitivism Laboratory,
- Physics Department,
- Faculty of Sciences Dhar Mahraz, Sidi Mohamed Ben Abdellah University
