Karim D. Djouani

Karim D. Djouani
Université Paris-Est Créteil Val de Marne - Université Paris 12 | UPEC · Laboratoire Images, Signaux et Systèmes Intelligents (LISSI) - EA 3956

PhD/DSc

About

330
Publications
73,806
Reads
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2,938
Citations
Citations since 2017
65 Research Items
2008 Citations
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Introduction
Full professor at University Paris Creteil, since 2006 and full professor at Tshwane University of Technology, Pretoria, South Africa, since January 2011 . Research interest pattern recognition, soft computing, networking systems and Robotics
Additional affiliations
January 2014 - present
Tshwane University of Technology
Position
  • SARChI Chair in Enabled Environment and Assistive Living
Description
  • www.eealchair.lissi.fr
July 2012 - present
Université Paris-Est Créteil Val de Marne - Université Paris 12
Position
  • Deputy Director in charge of Research
January 2009 - present
Cape Peninsula University of Technology
Position
  • Special topic lecturing
Description
  • Lecturing Engineering Optimisation for Master students in Electronics and Electrical Engineering.

Publications

Publications (330)
Article
Recent approaches, technologies and standards have been developed to address scalability in very large IoT networks with an emphasis on the Media Access Control (MAC) component. One of the best strategies to manage media access for a large number of devices is to provide concurrent media access. This can be achieved through the concept of Radio Fre...
Article
The virtualisation of the Internet of Things (IoT) Gateway (GW) Media Access Control (MAC) component separates the GW MAC functions from the GW device by deploying the GW MAC functions in a selected remote edge Data Centre (eDC). This concept can help support media access for a large number of devices based on concurrent transmissions over Radio Fr...
Article
Full-text available
With the availability of modern assistive techniques, ambient intelligence, and the Internet of Things (IoT), various innovative assistive environments have been developed, such as driving assistance systems (DAS), where the human driver can be provided with physical and emotional assistance. In this human–machine collaboration system, haptic inter...
Article
Objectives The main objective of this article is to provide a critical review of up-to-date contributions to simultaneous lightwave information and power transfer (SLIPT) in optical wireless communication (OWC) networks. Methods The first section of this article emphasizes the need for the exploitation of optical signals for energy harvesting purp...
Article
Full-text available
The virtualisation of the Internet of Things (IoT) Gateway (GW) Media Access Control (MAC) component separates the GW MAC functions from the GW device by deploying the GW MAC functions in a selected remote edge Data Centre (eDC). This concept can help support media access for a large number of devices based on concurrent transmissions over Radio Fr...
Article
Full-text available
Metaheuristic optimization algorithms (MOAs) are popularly deployed for medical image enhancement (MIE) purposes. However, with an ever-increasing rate of newer MOAs being proposed in the literature, the question arises as to whether there exist any significant advantage(s) among these different MOAs, particularly as it pertains to MIE. In this pap...
Article
Full-text available
Visible light communications (VLC) is an emerging and promising concept that is capable of solving the major challenges of 5G and Internet of Things (IoT) communication systems. Moreover, due to the usage of light-emitting diodes (LEDs) in almost every aspect of our daily life VLC is providing massive connectivity for various types of massive IoT c...
Article
Full-text available
Smartgrid is a paradigm that was introduced into the conventional electricity network to enhance the way generation, transmission, and distribution networks interrelate. It involves the use of Information and Communication Technology (ICT) and other solution in fault and intrusion detection, mere monitoring of energy generation, transmission, and d...
Article
Full-text available
Smart grid is a paradigm that was introduced into the conventional electricity network to enhance the way generation, transmission, and distribution networks interrelate. It involves the use of Information and Communication Technology (ICT) and other solution in fault and intrusion detection, mere monitoring of energy generation, transmission, and...
Article
Full-text available
The Internet of Things (IoT) is transforming the telecommunication landscape these days, and it has infiltrated every part of our life with applications in smart health, home automation, smart logistics, smart industries, and smart cities. Mobile IoT, such as narrowband-IoT (NB-IoT) and long-term evolution (LTE) for machines (LTE-M), are important...
Article
Full-text available
Smartgrid is a paradigm that was introduced into the conventional electricity network to enhance the way generation, transmission, and distribution networks interrelate. It involves the use of Information and Communication Technology (ICT) and other solution in fault and intrusion detection, mere monitoring of energy generation, transmission, and d...
Article
Full-text available
Hierdie artikel handel oor die modellering van ’n bewegingsplatform met twee grade van vryheid wat in ’n geougmenteerderealiteit-omgewing vir handgedrewe mobiliteithulpmiddels aangewend kan word. Die geougmenteerde bewegingsplatform dien as ’n evaluerings- of rehabilitasiehulpmiddel vir gebruikers met ’n gestremde onderste ledemaat en die handgedre...
Article
Full-text available
The design and the evaluation of communication protocols in WSNs is a crucial issue. Generally, researchers use simulation methods to evaluate them. However, formal modelling and analysis techniques are an efficient alternative to simulation methods. Indeed, these techniques allow performance evaluation and model verification. In this paper, a form...
Article
Full-text available
The Internet of Things (IoT) connect millions of devices in diverse areas such as smart cities, e‐health, transportation and defense to meet a wide range of human needs. To provide these services, a large amount of data needs to be transmitted to the IoT network servers. However, the IoT networks suffer from limited resources such as buffer size, n...
Article
Full-text available
Disabilities are a global issue due to the decrease in life quality and mobility of patients, especially people suffering from hand disabilities. This paper presents a review of active hand exoskeleton technologies, over the past decade, for rehabilitation, assistance, augmentation, and haptic devices. Hand exoskeletons are still an active research...
Thesis
Full-text available
To cite this version: Munguakonkwa Emmanuel Migabo. Energy efficient and scalable channel coding and clustering approach for narrowband internet of things (NB-IoT). Modeling and Simulation. Université Paris-Est; Tshwane University of Technology, 2021. English. NNT : 2021PESC0043. tel-03648532
Article
Full-text available
The capabilities of collaborative robotics have transcended the conventional abilities of decentralised robots as it provides benefits such as scalability, flexibility and robustness. Collaborative robots can operate safely in complex human environments without being restricted by the safety cages or barriers that often accompany them. Collaborativ...
Article
Full-text available
The novel coronavirus (COVID-19), declared by the World Health Organization (WHO) as a global pandemic, has brought with it changes to the general way of life. Major sectors of the world industry and economy have been affected and the Internet of Things (IoT) management and framework is no exception in this regard. This article provides an up to da...
Article
Full-text available
The Narrowband Internet of Things (NB-IoT) is a very promising licensed Internet of things (IoT) technology for accommodating massive device connections in 5G and beyond. To enable network scalability, this study proposes a two-layers novel mixed approach that aims not only to create an efficient spectrum sharing among the many NB-IoT devices but a...
Article
Full-text available
Integral and crucial to performance of wireless sensor networks (WSNs), and specifically industrial wireless sensor network (IWSN) is stable, robust, reliable, and ubiquitous communications system. Though, wired communications system is suitable for industrial communications and is resilient to shadowing and multipath fading effects of industrial‐W...
Conference Paper
Full-text available
Nowadays, the growing adoption of the Internet of Things (IoT) is reshaping the telecommunication landscape and has penetrated every aspect of our lives with influential applications on smart health, home automation, smart logistics, smart industries and smart cities. These advanced technologies bring about numerous benefits and has begun to play a...
Chapter
Most of the existing Narrowband Internet of Things (NB-IoT) channel coding techniques are based on repeating transmission data and control signals as a way to enhance the network’s reliability and therefore, enable long distance transmissions. However, most of these efforts are made to the expense of reducing the energy consumption of the NB-IoT ne...
Article
Full-text available
In this work, a general concept of the human-exoskeleton compatibility and interaction control is addressed. Rehabilitation, as applied to humans with motor control disorder, involves repetitive gait training in relation to lower limb extremity and repetitive task training in relation to upper limb extremity. It is in this regard that exoskeletal s...
Article
Full-text available
Most of the current research work on the Narrowband Internet of Things (NB-IoT) is focused on enhancing its network coverage. Many of the existing NB-IoT channel coding techniques are based on repeating transmission data and control signals as a way of enhancing the network’s reliability and therefore, enabling long-distance transmissions. Although...
Article
Full-text available
Nowadays, the growing adoption of the Internet of Things (IoT) is reshaping the telecommunication landscape and has penetrated every aspect of our lives with influential applications on smart health, home automation, smart logistics, smart industries and smart cities. These advanced technologies bring about numerous benefits and has begun to play a...
Article
Full-text available
The Narrowband Internet of Things (NB-IoT) has been introduced in the 3rd Generation Partnership Project (3GPP) Rel-13 with the aim to provide low-cost, low-power, wide-area cellular connectivity for the Internet of Things. With the exponentially increasing number of connected wireless devices in the order of 100 billion, it has become crucial that...
Article
Full-text available
The Media Access Control (MAC) serves as an imperative part of wireless communication networks which enables efficient provisioning of communication resources for device interconnectivity and ensures Quality of Service (QoS). The emergence of Large-Scale Internet of Things (LS-IoT) networks is characterised by a multi-domain distributed wireless co...
Article
A robust neural adaptive integral sliding mode control approach is proposed in this present paper to deal with the nonlinear exoskeleton systems. The proposed control technique is composed of two parts: an adaptive neural network controller and an adaptive integral terminal sliding mode controller. The adaptive laws are developed to estimate unknow...
Article
Full-text available
Narrowband Internet-of-Things (NB-IoT) is a low-power wide area (LPWA) technology developed by the Third-generation Partnership Project (3GPP) with objective to enable a wide range of IoT devices, low cost device and low power in the 5G era. As the number of IoT devices continue to increase, the demand for the spectrum allocation grows proportionat...
Article
Full-text available
This paper concerns adaptive sliding-mode control for wearable robots with a human in the loop. The exoskeletons are wearable robots in interaction with different users. The proposed approach supposes that the dynamic model of the exoskeleton-human system is unknown except for some classical bounded properties. The controller guarantees the closed-...
Article
The present paper introduces an extension of the quantile periodogram developed in Li (2012) since the latter suffers from instabilities and spectral leakage. To overcome these drawbacks, a L1 regularised version is proposed. The asymptotic properties of the new spectral estimator are discussed and simulations are performed in order to show its eff...
Article
Full-text available
The Internet-of-things (IoT) is the new trend of technology that contributes to a greater vision of a connected world. Compared to the traditional human-centric applications such as machine-type communications, it presents a different scenario where devices can communicate with each other to achieve different tasks at low transmission power costs....
Article
The extraction of relevant and distinct features from the electroencephalogram (EEG) signals is one of the most challenging task when implementing Brain Computer Interface (BCI) based systems. Frequency analysis techniques are recognised as one of the most suitable methods to have distinct information from EEG signals. However, existing studies use...
Article
Visual localization of indoor environments enables an autonomous system to recognize its current location and environment using sensors such as a camera. This work proposes a method for visual recognition of indoor environments leveraging on existing object detection, ontology, Bayesian-like framework, and Speeded-Up Robust Features (SURF) algorith...
Conference Paper
Full-text available
This paper introduces an adaptive integral sliding mode controller for exoskeletons. The controller design is based on the hypothesis that only classical properties are known such as parameters' bounds, and all other functions are unknown. To ensure the convergence in position, velocity and acceleration for desired trajectories, disturbances are su...
Article
Full-text available
Based on the recent studies, by 2020 devices connected to internet are predicted to increase up to 22 billion. In compliance with the rapid growth of internet of things (IoT), Low power wide area Network (LPWA) technologies play a big role in connecting billions of devices. This paper aims to analyze the existing standard NB-IoT, LORA, Wi-Fi HaLow...
Conference Paper
Although the Narrowband Internet of Things (NB- IoT) is tightly connected and integrated with cellular networks such as the Long Term Evolution (LTE), it remains an inde- pendent radio interface technology. Therefore, it is important to understand its specific requirements by providing a systematic mathematical model of its physical (PHY) layer. Th...
Conference Paper
Full-text available
Internet of things (IoT) is a new emerging technology with no human control, a new era where it’s about creating values in a connected society with enhanced services and sharing data more than ever to improve our lifestyle. The massive growth of IoT connected devices generates huge amount of data which creates different challenges in terms of stora...
Article
Full-text available
Context: Sensorimotor rhythms (SMR) have been the neuronal phenomena of choice in non-invasive EEG-based endogenous brain computer interfaces (BCIs) for more than two decades and SMR-based BCIs have achieved the highest degree of freedom control so far. Nevertheless, they are subject to long periods of training prior to attaining a satisfactory lev...
Article
Full-text available
Graph cut segmentation provides a platform to analyze images through a global segmentation strategy, and as a result of this, it has gained a wider acceptability in many interactive and automatic segmentation fields of application, such as the medical field. The graph cut energy function has a parameter that is tuned to ensure that the output is ne...
Article
A robust adaptive integral terminal sliding mode control strategy is proposed in this paper to deal with unknown but bounded dynamic uncertainties of a nonlinear system. This method is applied for the control of upper limb exoskeleton in order to achieve passive rehabilitation movements. Indeed, exoskeletons are in direct interaction with the human...
Article
Internet of Things (IoT) is usually associated with the acquisition of sensor node information and controlling of things. However, the inadequateness of location information of these sensor nodes compromises the intelligence of the IoT network. With an emphasis on indoor environments, localisation in IoT has become a very important area for researc...
Article
Full-text available
The utilisation of smart antenna (SA) techniques in future wireless and cellular networks is expected to have an impact on the efficient use of the spectrum and the optimization of service quality. This is because SAs can enhance the maximization of output power of the signal in desired directions amongst a whole lot of functions. Despite these ben...
Article
Full-text available
Ambient environments involve a variety of smart devices. Communities of these devices form a ubiquitous information processing system to which the physical environment should provide an intuitive and flexible user interface. Indeed, due to the proliferation of the number of services in ubiquitous environments, the problem of dynamic service composi...
Article
Full-text available
Currently, organizations are growing and continuously improving their services while reducing budget in a competitive market. This is achieved by reusing existing well designed and proved services delivered by third parties in the cloud. Additionally, multi- domain collaborative cloud environments are a promising approach that enables to build and...
Article
Full-text available
Internet of Things (IoTs) is an emerging technology that is envisioned to revolutionise the enabling environment and to provide autonomous, ubiquitous and pervasive computing within Wireless Sensor Networks (WSNs). IoTs are usually associated with the acquisition of sensor node information and controlling of “things”. However, the absence of locati...
Article
Full-text available
Context refers to the particular settings that give additional information on the reasons behind the set of data that is obtained and its value to the end user. Context is often derived through inferences and reasoning techniques, the aim being disambiguation, reducing doubts, and improve confidence levels. In essence, context is determined based o...
Article
Full-text available
A bounded control strategy is employed for the rehabilitation and assistance of a patient with lower-limb disorder. Complete and partial lower-limb motor function disorders are considered. This application is centered on the knee and the ankle joint level, thereby considering a user in a sitting position. A high gain observer is used in the estimat...
Poster
Full-text available
Modélisation et vérification des protocoles de communication dans les WSNs avec nœuds mobiles
Article
Full-text available
Despite its low computational cost, the Gradient Based Routing (GBR) broadcast of interest messages in Wireless Sensor Networks (WSNs) causes significant packets duplications and unnecessary packets transmissions. This results in energy wastage, traffic load imbalance, high network traffic, and low throughput. Thanks to the emergence of fast and po...
Conference Paper
Abstract: This paper proposes a mathematical maintenance model that analyses the effect of maintenance on the survival probability of medical equipment based on maintenance history and age of the equipment. The proposed model is simulated in Scilab using real data extracted from maintenance history of Anaesthesia Machine from Draeger. The analysis...
Conference Paper
Full-text available
Brain Computer Interfaces (BCI) provide alternative communication pathways between the human brain and artificial agents and could restore mobility and improve quality of life to disable patients. Research in this field is evolving prompting researchers to render the technology available for practical usage. The following paper presents a BCI real...
Article
Full-text available
Multipath is among the major sources of errors in precise positioning using GPS and continues to be extensively studied. Two Fast Fourier Transform (FFT)-based detectors are presented in this paper as GPS multipath detection techniques. The detectors are formulated as binary hypothesis tests under the assumption that the multipath exists for a suff...
Conference Paper
Maintaining robust tracking and positioning integrity in harsh environments is a real challenge for GNSS receivers. This paper considers three possible tracking and navigation solutions to address this challenge. Firstly, a vector tracking loop (VTL) capable of using correlator-based multipath detectors and other signal quality indicators to exclud...
Article
The Internet of Things (IoT) refers to the domain of physical/logical objects connected to the Internet that can be accessible anywhere and anytime, giving the access policies. Web objects and services can be seen as distributed and cooperative agents that need to collaborate in order to reach advanced functionalities and also to optimize the overa...
Article
Full-text available
In the Internet of Things (IoT), web objects and services can be seen as distributed and cooperative agents that need to collaborate in order to reach advanced functionalities and also to optimize the overall quality offered to the end users. For this purpose, we propose in this paper a distributed and optimal QoS services selection approach based...
Article
Full-text available
Network coding consists of intelligently aggregating data packets by means of binary or linear combinations. Recently, network coding has been proposed as a complementary solution for energy efficient multi-hop routing in Wireless Sensor Networks (WSNs). This is because network coding, through the aggregation of packets, considerably reduces the nu...
Article
Full-text available
The key idea to spectrum decision in Cognitive Radio Networks (CRN) is the selection of the best available spectrum band to satisfy Secondary Users (SUs) Quality of Service (QoS) requirements, without interfering with transmission of the licensed or Primary Users (PU). This challenging task requires a very good cooperation between users with differ...
Article
Full-text available
Billions of devices are now integral part of the day-to-day routine of people but they are sometime incompatible with one another because they employ divergent protocols. The introduction of semantics has been a key enabler towards proper and universal descriptions of connected objects as well as the relationship between them, removing relational a...
Article
Full-text available
Computer vision techniques are applied to perform automatic wildlife surveying and animal monitoring. Animal detection in aerial videos is challenging because of the complexity of wild environments. In this paper, a method for moving animal detection is proposed by taking advantage of global patterns of pixel motion. In the video dataset, where ani...
Article
Full-text available
South Africa is a water scarce country with limited water resources and steadily growing water demand. Unacceptably high water losses and non-revenue water threaten our water resource security as well as the financial viability of municipal water service provision. Traditional approaches of solving water loss problems are not enough to make a signi...
Conference Paper
This paper deals with semantic composition of ubiquitous computing (Ubicomp) services in multi-domain heterogeneous environments. A new semantic framework enabling the specification of multi-domain composite services and proving their correctness is proposed. The proposed framework reduces the gap between safety critical systems including ubiquitou...