Djamel Abed

Djamel Abed
Université 8 mai 1945 - Guelma · Department of Electronics and Telecommunications

Professor

About

34
Publications
8,295
Reads
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217
Citations
Citations since 2016
22 Research Items
180 Citations
201620172018201920202021202201020304050
201620172018201920202021202201020304050
201620172018201920202021202201020304050
201620172018201920202021202201020304050
Additional affiliations
November 2010 - February 2016
Université 8 mai 1945 - Guelma
Position
  • Professor
November 2010 - February 2016
Université 8 mai 1945 - Guelma
Position
  • Professor (Full)

Publications

Publications (34)
Article
We numerically investigate coherent supercontinuum (SC) generation extending from the deep ultraviolet to the mid-infrared spectral region using few-cycle optical pulses, pumped into a ZBLAN photonic crystal fiber. The finite difference method is used to optimize the fiber structure and achieve two zero dispersion wavelengths, with a broad anomalou...
Article
Full-text available
E-Health systems based on the internet of things belong to real-time diagnosis and monitoring systems require optimizing solutions. Performing the quality of service and security of large-scale sensor network data developed for e-health-aware applications becomes a great challenge. To provide real-time effective solution, this paper introduces a no...
Article
Full-text available
The single-carrier frequency division multiple access (SC-FDMA) is a promising technique that has been adopted as an uplink transmission scheme in the long-term evolution (LTE) cellular system. This is attributed to its advantages such as the low peak-to-average power ratio (PAPR) and the utilization of frequency-domain equalizers to resolve the pr...
Article
Full-text available
A multiple-input-multiple-output (MIMO) ultra-wideband (UWB) printed bent antenna, suitable for MB-OFDM ECMA-368 system integration with the wireless universal serial-bus (WUSB) dongle is proposed. The antenna is made up of two antenna components that have a total area of 18 × 53 mm 2. Each antenna element is a simple modified folded-monopole, with...
Article
Full-text available
In this work, to overcome the flaws of standard chaotic maps we generated two new cascaded structures, 3D Cubic-Sine and 2D Cubic-Cat chaotic parametric maps, based on a new parameter-varied Cubic map that enhance the chaos complexity and therefore offering a high randomness’s level of the chaotic sequences and a huge key space.To provide optimum s...
Article
Full-text available
We design an all-solid Photonic Crystal Fiber (PCF) with all-normal dispersion profile to achieve broadband, ultraflat-top and coherent supercontinuum generation in the mid-infrared spectral region, by using sub-nanojoule laser pulses. Two environment friendly and thermally compatible chalcogenide glasses, namely \({\mathrm {Ge}}_{15} {\mathrm {Sb}...
Article
Full-text available
In order to furnish connectivity to an incredible number of devices and to satisfy the capacity demands, non-orthogonal multiple access (NOMA) is considered as a hopeful solution for future 5G. Moreover, grant-free transmission is substantially expected in the uplink NOMA to minimize the latency time and detection overhead. However, multi-user dete...
Article
Full-text available
Long‐term evolution (LTE) system adopts single‐carrier frequency division multiple access (SC‐FDMA) technique for high data‐rate uplink wireless communication mainly due to its advantage of high power efficiency and low peak‐to‐average‐power ratio (PAPR). This paper presents a chaotic interleaving scheme for the discrete wavelet transform‐based SC‐...
Article
Mid-infrared supercontinuum (SC) generation in normally dispersive photonic crystal fiber (PCF) made of GeS2-Ga2S3-CsI chalcohalide glass, is theoretically investigated. The finite difference method is employed to compute and optimize the different linear and nonlinear parameters of the fundamental guided mode. Simulation results indicate that the...
Conference Paper
Multiband Orthogonal Frequency-Division Multiplexing (MB-OFDM) based Ultra-Wideband (UWB) communication systems is an efficient solution for high data-rate transmission over short-range as a possible candidate for indoor wireless personnel area networks. The main disadvantage of MB-OFDM signals is the high Peak-to-Average Power Ratio (PAPR),...
Article
This letter demonstrates the chaotic precoding approach in multiple-input multiple-output space frequency block coded orthogonal frequency division multiplexing (MIMO SFBC-OFDM) communication systems as an appropriate solution for peak-to-average power ratio (PAPR) reduction. Firstly, we have proposed four cascades chaotic generators (CCGs) by usin...
Article
In this paper, we numerically demonstrate broadband, ultraflat-top and highly coherent mid-infrared Supercontinuum (SC) generation in an all-normal dispersion (ANDi) Ge15Sb15Se70 chalcogenide Circular Lattice Photonic Crystal Fiber (CL-PCF). The propagation properties of the fundamental mode are computed with the Finite Difference Method (FDM). Num...
Article
We report numerical investigation of mid-infrared supercontinuum (SC) generation in all-normal dispersion (ANDi) As39Se61 chalcogenide photonic crystal fiber (PCF). Numerical results, obtained by using the Finite-Difference Frequency-Domain (FDFD) method, indicate that desirable dispersion properties can be achieved by adjusting the air holes diame...
Article
All normal dispersion (ANDi) and highly nonlinear chalcogenide glass photonic crystal fiber (PCF) is proposed and numerically investigated for a broad, coherent and ultra-flat mid-infrared supercontinuum generation. The proposed PCF consists of a solid core made of Ga8Sb32S60 glass surrounded by seven rings of air holes arranged in a triangular lat...
Article
Full-text available
This paper deals with the Peak to Average Power Ratio (PAPR) drawback appeared in Filter-Bank Multi-Carriers with Offset-QAM (FBMC-OQAM) which is the candidate waveform in 5G wireless communication systems. A post-Inverse Discrete Fourier Transform (IDFT) Discrete Sliding Norm Transform (DSNT) is proposed based on L2-metric and the norm of five sam...
Conference Paper
Full-text available
Multiband Orthogonal Frequency-Division Multiplexing (MB-OFDM) based Ultra-Wideband (UWB) communication systems is an efficient solution for high data-rate transmission over short-range as a possible candidate for indoor wireless personnel area networks. The main disadvantage of MB-OFDM signals is the high Peak-to-Average Power Ratio (PAPR), which...
Article
Multimedia content delivery applications over wireless sensor networks have been progressively popular. The crucial obstacle to communicating compressed images over wireless multimedia sensor networks (WMSNs) has been the lack of suitable energy efficient processing architectures and strategies. In this letter, we propose a low-complexity energy ef...
Article
We numerically demonstrate mid-infrared supercontinuum generation in dispersion-engineered chalcogenide glass channel waveguide. The proposed ridge waveguide consists of arsenic pentasulfide (As 2 S 5) strip deposited on magnesium fluoride (MgF 2) substrate and air acting as an upper cladding. The structure parameters are calculated and optimized b...
Article
In this paper, we present and numerically investigate Supercontinuum Generation (SCG) in ZBLAN circular lattice photonic crystal fiber with nearly zero ultra-flattened chromatic dispersion. The fiber dispersion properties are controlled by selectively liquid-filled and reduced air holes. The structure parameters have been optimized by using the ful...
Article
Full-text available
Orthogonal frequency division multiplexing (OFDM) systems have inferior nonlinear performance due to their high peak to average power ratio (PAPR) characteristics, which degrades the performance in optical wireless communication systems. A modified asymmetrically clipped optical (ACO)-OFDM system with low PAPR by introducing a discrete sliding norm...
Conference Paper
Full-text available
An original design of 3D-MID antenna for passive UHF RFID tags is presented in this paper. For the first time the integration of RFID tag into the MID technology is considered. The novel tag based on a meander antenna and placed on the external face of a thermoplastic cylinder (LCP Vectra E820i) is compatible with Laser Direct Structuring (LDS) pro...
Article
Full-text available
This paper is aimed at proposing a novel printed microstrip-fed slot antenna suitable for wireless ultra-wideband (UWB) communication systems. The proposed antenna has been designed for operating at GHz frequency band. The synthesis of the antenna is carried out by means of parametric study of the main parameters. The result is a printed stepped-ci...
Article
Full-text available
In most existing transmitted-reference ultra-wideband (TR-UWB) communication systems, receivers use the standard Gaussian approximation (SGA) for multiuser interference (MUI). It is an assumption used in most conventional multiuser systems, where the MUI tends to a Gaussian process by the central limit theorem, and convergence is relatively fast wi...
Conference Paper
Full-text available
In this paper we present an analytical probability density function (PDF) for the multiuser interference (MUI) in a transmitted-reference ultra-wideband (TR-UWB) communication system. We show that the Middleton class-A model is a more appropriate statistical model for the MUI than the generally used Gaussian approximation (GA). Also, we derive a PD...
Article
Full-text available
We experimentally demonstrate the feasibility of the bandwidth tuning of a liquid-crystal based bandpass Lyot filter. This bandwidth tuning is achieved by applying a voltage to vary the birefringence of the liquid-crystal cells whose optical path difference takes predefined discrete values. We show that for a 2-stage liquid-crystal Lyot filter and...
Presentation
Full-text available
We experimentally demonstrate the feasibility of the bandwidth tuning of a liquid-crystal based bandpass Lyot filter. This bandwidth tuning is achieved by applying a voltage to vary the birefringence of the liquid-crystal cells whose optical path difference takes predefined discrete values. We show that for a 2-stage liquid-crystal Lyot filter and...
Chapter
Full-text available
The authors acknowledge Dr. Attrouz, B. chief of Microwave and radar laboratory at Military Polytechnic School (EMP) in Algeria for his help in antenna prototypes realization/measurement and his very useful discussions and motivation.
Conference Paper
Full-text available
The design and analysis of novel printed slot antenna, fed by microstrip line, for Ultra Wide Band (UWB) communication systems is presented. Detailed simulation and experimental investigations are conducted to understand its behaviour and optimize for UWB operation. The designed antenna has a wide operating bandwidth of over 126% (2.4–10.6 GHz) for...
Article
Full-text available
This article presents an optimized design for a novel printed monopole antenna, with a notched semi-elliptical ground plane. A parametric study of the antenna parameters and their effects is given. The monopole antenna with the proposed bandwidth enhancement technique covers the band 3.1–10.6 GHz, which has been approved by the Federal Communicatio...
Conference Paper
Full-text available
This paper, presents an optimized design for a novel printed modified elliptical monopole (PMEM) antenna. The proposed antenna covers the band 3.1 to 10.6 GHz, which has approved by the Federal Communications Commission (FCC) as a commercial band for impulse radio ultra-wideband (IR-UWB) communications. A parametric study of the proposed antenna wa...
Article
Full-text available
A novel printed monopole antenna fed by a coplanar waveguide (CPW) is proposed in view of ultra-wideband applications. Its impedance bandwidth defined by a voltage standing-wave ratio (VSWR < 2) is from 3 to 11.3 GHz with a fractional bandwidth of 116%. A parametric study of the proposed antenna was carried out in order to optimise the main paramet...

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Projects

Projects (6)
Project
The themes of interest include, but are not limited to : • Physical layer security for WMSNs • Physical layer security for PON networks • Physical layer security for VLC systems • Physical layer security techniques for IoT • Advanced signal processing for physical layer security • Machine learning-based physical layer security
Project
The PAPR Reduction in Multicarrier Modulation (MCM) Systems