Ghaida A. Al-Suhail
@uobasrah.edu.iq
Department of Computer Engineering/College of Engineering
University of Basrah
Dr. Ghaida A. Al-Suhail received her B.Sc., M.Sc., and Ph.D. degrees in Electrical Engineering in 1984, 1989, and 2007, respectively all at University of Basrah in Iraq. She became an Assistant Professor in 1996. Currently, she is a Full Professor at the Department of Computer Engineering, College of Engineering, University of Basrah in Iraq. Her current research interests include Multimedia Communications, Wireless Networks, Cross-layer Design, Internet of Things, Routing Protocols in Ad hoc and Sensor Networks, Chaotic Radars, and Optical Communications. She was a Fulbright Scholar in 2011 at the Michigan State University (MSU), USA, and Endeavour Fellowship 2009 Scholar at the Australian National University (ANU), RSISE, Australia. She has published several papers in prestigious International Journals and Conferences.
RESEARCH INTERESTS
Multimedia Communications; Wireless Networks; Cross-layer Design; Internet of Things, Routing Protocols in Ad hoc Networks ( MANET, VANET and FANET); Wireless Sensor Networks; Chaotic Radar Systems; and Optical Communications
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Raneen I. Al-Essa and Ghaida A. Al-Suhail
MDPI AG
In mobile ad hoc networks (MANETs), geographical routing provides a robust and scalable solution for the randomly distributed and unrestricted movement of nodes. Each node broadcasts beacon packets periodically to exchange its position with neighboring nodes. However, reliable beacons can negatively affect routing performance in dynamic environments, particularly when there is a sudden and rapid change in the nodes’ mobility. Therefore, this paper suggests an improved Greedy Perimeter Stateless Routing Protocol, namely AFB-GPSR, to reduce routing overhead and increase network reliability by maintaining correct route selection. To this end, an adaptive beaconing strategy based on a fuzzy logic scheme (AFB) is utilized to choose more optimal routes for data forwarding. Instead of constant periodic beaconing, the AFB strategy can dynamically adjust beacon interval time with the variation of three network parameters: node speed, one-hop neighbors’ density, and link quality of nodes. The routing evaluation of the proposed protocol is carried out using OMNeT++ simulation experiments. The results show that the AFB strategy within the GPSR protocol can effectively reduce the routing overhead and improve the packet-delivery ratio, throughput, average end-to-end delay, and normalized routing load as compared to traditional routing protocols (AODV and GPSR with fixed beaconing). An enhancement of the packet-delivery ratio of up to 14% is achieved, and the routing cost is reduced by 35%. Moreover, the AFB-GPSR protocol exhibits good performance versus the state-of-the-art protocols in MANET.
Raneen I. Al-Essa and Ghaida A. Al-Suhail
Springer International Publishing
Mariam H. Abd, Ghaida A. Al-Suhail, Fadhil R. Tahir, Ahmed M. Ali Ali, Hamza A. Abbood, Kia Dashtipour, Sajjad Shaukat Jamal, and Jawad Ahmad
MDPI AG
There is no doubt that chaotic systems are still attractive issues in various radar applications and communication systems. In this paper, we present a new 0.3 GHz mono-static microwave chaotic radar. It includes a chaotic system based on a time-delay to generate and process frequency modulated (FM) waveforms. Such a radar is designed to extract high-resolution information from the targets. To generate a continuous FM signal, the chaotic signal is first modulated using the voltage control oscillator (VCO). Next, the correct value for the loop gain (G) is carefully set when utilizing the Phase-Locked Loop (PLL) at the receiver, so that the instantaneous frequency that reflects a chaotic state variable can be reliably recovered. In this system, the PLL synchronization and radar correlation are enough to recover the echo signal and detect the target. The finding indicates that the system can be implemented with no need to use the complete self-synchronization or complex projective synchronization schemes as compared to the existing chaotic radar systems. The simulation results show that the short-time cross-correlation of the transmitted and reconstructed waveforms is good and satisfactory to detect the target under various signal-to-noise ratio (SNR) levels and with less complexity in the design.
Israa A. Aljabry and Ghaida A. Al-Suhail
IEEE
Over recent years, a new technology named VANET (Vehicular Ad-hoc Networks) is highly recommended in a smart cities and especially in Intelligent Transportation Systems (ITS). VANET technology relies on the nodes acting like cars without the necessity for any controller or central base station by creating a wireless link among them. It enables cars to send and receive information between themselves and their environment. There are many network simulators that can support VANET environments such as NS-2, NS-3, OMNeT++, OPNET, and Qualnet. In this paper, we investigate the performance of a common reactive routing protocol; named (AODV) Ad-hoc On-demand Distance Vector routing where two scenarios are considered. The first scenario is a comparison between Vehicle to Vehicle (V2V) and Vehicle-to-Infrastructure (V2I) communication modes. The second one is made between two maps Basrah city and Manhattan grid in Vehicle to Vehicle (V2V) mode; through the real-time interaction between OMNeT++ and SUMO. The implementation of AODV reveals a comparative results analysis using Quality of Service (QoS) parameters, such as packet delivery ratio, packet drop rate, and network throughput. The simulation results in a helpful guideline for researchers to improve and develop this protocol as compared to other existing works.
Raneen I. Al-Essa and Ghaida A. Al-Suhail
IEEE
A Vehicular Ad hoc Network (VANET) is made up of groups of moving or stationary vehicles that are linked by a wireless network. It arose from the concept of creating an automobiles network to achieve a specific need or situation, such as Intelligent Transport System (ITS) and smart cities. VANET are now recognized as reliable network that vehicles are used for communication on highways and in cities. Basically, when the vehicles communicate with one another directly is known as Vehicle to Vehicle (V2V), or it can communicate with Infrastructure or a Road-side Unit (RSU so it is called Vehicle to Infrastructure (V2I) and Vehicle to Everything (V2X). This paper presents the evaluation of Dynamic MANET On-Demand (DYMO) routing protocol for a vehicular network with a single RSU in order to elaborate the influence of different transmission power values on QoS parameters. The simulation results are obtained using OMNeT++ with INET and Veins frameworks communicate with a SUMO traffic road simulator to implement DYMO. The findings depict a good foundation for researchers in evaluating the efficacy of transmission power of the vehicles on the QoS metrics of DYMO routing protocol in terms of packet delivery ratio, normalized routing load, throughput and packet loss ratio in a VANET environment.
Raneen I. Al-Essa and Ghaida A. Al-Suhail
IEEE
A Mobile Ad hoc Network (MANET) is made up of multiple nodes connected by routing protocols that do not require any infrastructure or centralized access point. Mobility and transmission power are two important parameters that influence the activity of MANET routing protocols. This study investigates the network performance of the reactive protocol AODV under different transmission power conditions in three mobility models of Random waypoint, Mass mobility and Linear mobility. Also, this study evaluates the impact of network size, mobility speed and simulation area on the network performance in terms of different QoS parameters. The simulation results are obtained using OMNeT++ and INET framework for AODV routing protocol. The findings indicate a good and helpful baseline for the researchers in evaluating some of the QoS metrics such as the packet delivery ratio, end to end delay and throughput under various scenarios in MANET environment.
Enaam A. Al-Hussain and Ghaida A. Al-Suhail
Springer International Publishing
Enaam A. Al-Hussain and Ghaida A. Al-Suhail
Springer International Publishing
Israa A. Aljabry and Ghaida A. Al-Suhail
Springer International Publishing
Israa Aljabry and Ghaida Al-Suhail
University of Basrah - College of Engineering
Vehicular Ad hoc Networks (VANETs), a subsection of Mobile Ad hoc Networks (MANETs), have strong future application prospects. Because topology structures are rapidly changing, determining a route that can guarantee a good Quality of Service (QoS) is a critical issue in VANETs. Routing is a critical component that must be addressed in order to utilize effective communication among vehicles. The purpose obtained from this study is to compare the AODV and GPSR performance in terms of Packet Delivery Ratio, Packet Drop Ratio, Throughput, and End-to-End Delay by applying three scenarios, the first scenario focuses on studying these protocols in terms of QoS while changing the number of vehicles at a constant speed of 40Km/h, and for the second scenario changing the speed value while keeping a constant number of vehicles which is 100, the third involves changing the communication range at a constant speed and vehicle number. This study represents a foundation for researchers to help elaborate on the strength and weaknesses of these two protocols. OMNeT++ in conjunction with SUMO is used for simulation.
Enaam Al-Husain and Ghaida Al-Suhail
University of Basrah - College of Engineering
Clustering is one of the most energy-efficient techniques for extending the lifetime of wireless sensor networks (WSNs). In a clustered WSN, each sensor node transmits the data acquired from the sensing field to the leader node (cluster head). The cluster head (CH) is in charge of aggregating and routing the collected data to the Base station (BS) of the deployed network. Thereby, the selection of the optimum CH is still a crucial issue to reduce the consumed energy in each node and extend the network lifetime. To determine the optimal number of CHs, this paper proposes an Enhanced Fuzzy-based LEACH (E-FLEACH) protocol based on the Fuzzy Logic Controller (FLC). The FLC system relies on three inputs: the residual energy of each node, the distance of each node from the base station (sink node), as well as the node’s centrality. The proposed protocol is implemented using the Castalia simulator in conjunction with OMNET++, and simulation results indicate that the proposed protocol outperforms the traditional LEACH protocol in terms of network lifetime, energy consumption, and stability.
Israa A. Aljabry, Ghaida A. Al-Suhail, and Waheb A. Jabbar
IEEE
Over recent years, a new technology named VANET (Vehicular Ad-hoc Networks) is highly recommended in smart cities and especially in Intelligent Transportation Systems (ITS). The VANET technology relies on the nodes acting like cars without the necessity for any controller or central base station by creating a wireless link among them. It enables cars to send and receive information between themselves and their environment. most VANETs utilize position-based routing protocols because they contain a GPS device. To deal with VANET problems, one solution is Geographic Perimeter Stateless Routing (GPSR) which has been broadly implemented. This paper suggests an effective intelligent fuzzy logic control system; called the FL-QN GPSR routing protocol. The proposed routing protocol incorporates two metrics link quality, and neighbor node to detect the best next-hop node for packet forwarding also updates the format of the Hello message by adding the direction field to be more suitable to our simulation. The OMNeT++ and SUMO simulation tools are both used in parallel to examine the VANET environment. The obtained results of the four simulation experiments in urban environments indicate substantial improvements in the network performance compared to the traditional GPSR and AODV concerning the QoS parameters.
Ahmed M. Ali Ali, Fadhil R. Tahir, Ghaida A. Alsuhail, and Hamzah Abdulkareem Abbood
Elsevier BV
Ghaida A. Al-Suhail, Salah Al-Majeed, Sarah H. Subber, and A. Sheikh-Akbari
Deanship of Scientific Research
Forward Error Correction (FEC) is a commonly adopted mechanism to mitigate packet loss/bit error during real-time communication. An adaptive, Fuzzy based FEC algorithm to provide a robust video quality metric for multimedia transmission over wireless networks has been proposed to optimize the redundancy of the generated code words from a Reed-Solomon encoder and to save the bandwidth of the network channel. The scheme is based on probability estimations derived from the data loss rates related to the recovery mechanism at the client end. By applying the adaptive FEC, the server uses the reports to predict the next network loss rate using a curve-fitting technique to generate the optimized number of redundant packets to meet specific residual error rates at the client end. Simulation results in the cellular system show that the video quality is massively adapted to the optimized FEC codes based on the probability of packet loss and packet correlation in a wireless environment.
Liqaa A. Al-Hashime, Sinan M. Abdul Satar, Ghaida A. Al-Suhail, and Osama Saied
ASTES Journal
Liqaa AbdulSattar AL-Hashemi, Ghaida A. Al-Suhail, Sinan M. Abdul Satar, Ali N. Kareem, and Mohammed A. Hussein
IEEE
The Inter-Carrier Interference (ICI) compensation for Coherent Optical Orthogonal Frequency Division Multiplexing (CO-OFDM) system has been studied in this paper. The purpose behind is to investigate the presence of ICI due to the impact of Laser Phase Noise (LPN) and Fiber Non-Linearity (FNL). Thereby, we propose a simple clipping scheme which represents an effective distortion algorithm to decrease the Peak to Average Power Ratio (PAPR) for 4QAM system. The method exhibits a significant process on ICI cancellation in CO-OFDM system. The OFDM signal is basically transmitted along 550km distance rated at 10Gbps single mode fiber for the coherent optical mode. The new findings show that the receiver sensitivity is highly improved below 10−3 FEC for laser power 5dBm; and archives about 1dBm to 2.4dBm when laser power becomes 8dBm at a typical clipping ratio of 0.6. In particular, the system exhibits a good performance over a 385km transmission distance in comparison to the conventional CO-OFDM. As a result, the proposed clipping shows that the system can enhance its the performance by reducing ICI in the CO-OFDM system; in addition to present a high robustness in BER metric against FNL by a clear reduction in PAPR.
Liqaa A. AL-Hashemi, Sinan M. Abdul Satar, and Ghaida A. Al-Suhail
IEEE
This paper mainly concerns on reducing the impact of chromatic dispersion (CD) and the nonlinear(NL) impairments in coherent optical orthogonal frequency division multiplexing (CO-OFDM) system. In effect, the system suffers from a severe problem due to a high peak to average power ratio (PAPR); and this consequently degrades the system performance. In this paper, a new method is proposed to mitigate the PAPR problem and thereby reduce the impact of nonlinearity on the performance of the CO-OFDM system with quadrature amplitude modulation QAM mapping. The recommended new technique is based on combining two effective ways of clipping method integrated with the L2-by3 method. The simulation results indicate that the proposed method was effectively able to improve system performance by enhancing system performance via bit error rate (BER), quality factor (QF), error vector magnitude (EVM) beside the Optical Signal-to-Noise Ratio (OSNR) without the need to add any digital processing at the receiver; and eventually decrease the receiver complexity. The proposed method reduced the peak to average power ratio (PAPR) about 3.8 dB and helped to increase transmission distance by approximately 200 km.
Ghaida A. Al-Suhail, Fadhil Rahma Tahir, Mariam Hussien Abd, Viet-Thanh Pham, and Luigi Fortuna
Elsevier BV
Abstract Although the Very Low-Frequency (VLF) waveforms have limited practical applications in acoustics (sonar) and secure military communications with radars and submarines; to this end; this paper presents a new and simple analytical model of VLF monostatic direct chaotic radar system. The model hypothetically depends on the two identical coupled time-delayed feedback chaotic systems which can generate and recover a long-wave chaotic signal. To resist the influence of positive Lyapunov exponents of the time-delay chaotic systems, the complete replacement of Pecaro and Carroll (PC) synchronization is employed. It can faithfully recover the chaotic signal from the back-scattered (echo) signal from the target over a noisy channel. The system performance is characterized in terms of the time series of synchronization in addition to the peak of the cross-correlation. Simulation results are conducted for substantial sensitivities of the chaotic signal to the system parameters and initial conditions. As a result, it is found that an effective and robust chaotic radar (CRADAR) model can be obtained when the signal-to-noise ratio (SNR) highly degrades to 0 dB, but with clear peak in correlation performance for detecting the target. Then, the model can be considered as a state of the art towards counter stealth technology and might be developed for other acoustic secure applications.
Fadhil Rahma Tahir, Ghaida A. Al Suhail, and Mariam Hussien Abd
Inderscience Publishers
Liqaa A. Al-Hashime, Ghaida A. Al-Suhail, and Sinan M. Abdul Satar
Springer International Publishing
There is no doubt that Coherent Optical Orthogonal Frequency Division Multiplexing (CO-OFDM) is considered as an attractive modulation format. The previously mentioned term has received a great deal of attention in recent years within the long haul fiber-optic transmission community. However, the benefit of optical OFDM is concerned with indefinite quantity of eliminating Inter Symbol Interference (ISI). Such a quantity is caused due to Chromatic Dispersion (CD) and polarization-mode dispersion (PMD).
Mariam Hussein Abd, Fadhil Rahma Tahir, Ghaida A. Al-Suhail, and Viet-Thanh Pham
Springer Science and Business Media LLC
Recently, the time delay has considerable attention in the existence of chaos in the nonlinear dynamical systems. In this paper, we therefore develop a new cascade-coupled chaotic synchronization model based on the first-order nonlinear time-delayed chaotic system using the simple Lur’e system to provide more robust secure system. Adaptive observer-based master systems are designed to synchronize with the given chaotic slave systems at the receiver where the dynamical model is subjected to certain time delay values at the slave systems. Two cases of being system parameters match and mismatch are considered. The adaptive observer laws are carefully designed to confirm the convergence of error dynamics. Numerical simulations reveal the effectiveness of the time delay on the recovered message security using the chaotic masking technique. As a result, the information message is able to be recovered correctly with sufficient precision over the noiseless and noisy channels and under predefined time-delay values compared to the existing systems.
Mustafa S. Aljumaily and Ghaida A. Al-Suhail
Emerald
Purpose Recently, many researches have been devoted to studying the possibility of using wireless signals of the Wi-Fi networks in human-gesture recognition. They focus on classifying gestures despite who is performing them, and only a few of the previous work make use of the wireless channel state information in identifying humans. This paper aims to recognize different humans and their multiple gestures in an indoor environment. Design/methodology/approach The authors designed a gesture recognition system that consists of channel state information data collection, preprocessing, features extraction and classification to guess the human and the gesture in the vicinity of a Wi-Fi-enabled device with modified Wi-Fi-device driver to collect the channel state information, and process it in real time. Findings The proposed system proved to work well for different humans and different gestures with an accuracy that ranges from 87 per cent for multiple humans and multiple gestures to 98 per cent for individual humans’ gesture recognition. Originality/value This paper used new preprocessing and filtering techniques, proposed new features to be extracted from the data and new classification method that have not been used in this field before.
Mehdi J. Marie, Ghaida A. Al-Suhail, and Salah Al-Majeed
IEEE
There are tremendous developments and achievements during recent years, related to the use of wireless technologies in industry to provide flexibility, scalability and low cost. Wireless Networked Control Systems (WNCSs) based on Wireless Sensor Networks (WSNs) integrate three technologies: control engineering, computer networks and wireless communication. WNCSs are systems of smart and wirelessly connected devices equipped with limited communication, computation and sensing capabilities for control and monitoring applications. The design, building and implementation of a WNCS for a FlyWheel Position Control System (F-W PCS) are based on the XBee platform. A simulation of the wireless networked F-W PCS mathematical model was implemented using the TrueTime 1.5 MATLAB/Simulink Toolbox with the wireless networks between controller and plant nodes employing ZigBee (IEEE802.15.4) and Wi-Fi (IEEE802.11) protocols. The real-time wireless F-W PCS was realized and implemented successfully. Experimental set-up and simulation results show the feasibility and reliability of the system when it is compared with more traditional networked control systems.