Abdelhamid Younis

Abdelhamid Younis

University of Benghazi

H-index: 19

Africa-Libya

Abdelhamid Younis Information

University

University of Benghazi

Position

Dean of Engineering Libya

Citations(all)

2237

Citations(since 2020)

1046

Cited By

1699

hIndex(all)

19

hIndex(since 2020)

15

i10Index(all)

21

i10Index(since 2020)

17

Email

University Profile Page

University of Benghazi

Abdelhamid Younis Skills & Research Interests

Wireless Communications

Communication Theory

Spatial Modulation

MIMO

Top articles of Abdelhamid Younis

Performance analysis and comparison of a novel Steiner-Quadrature Space Shift Keying (S-QSSK) scheme in massive MIMO systems

This paper introduces Steiner-quadrature space shift keying (QSSK) (S-QSSK), an innovative modulation scheme tailored for multiple–input multiple–output (MIMO) systems. The study compares S-QSSK with existing modulation schemes (S-space shift keying (SSK)(S-SSK), QSSK, generalized quadrature space shift keying (GQSSK)) across various performance metrics, considering diverse channel conditions, transmit antenna numbers, and spectral efficiencies. Theoretical average bit error rate (ABER) analysis, validated by Monte Carlo simulations, establishes a close agreement between analytical and practical results, especially at realistic signal-to-noise-ratio (SNR) values. Additionally, capacity and mutual information formulas shed light on the system’s information transmission capabilities. The research delves into the outage probability, power consumption, and computational complexity of S-QSSK MIMO …

Authors

Raed Mesleh,Khadiga Eltira,Abdelhamid Younis,Mohammad Abudayah

Journal

Journal of the Franklin Institute

Published Date

2024/4/25

Capacity analysis of index modulation multiple access system

Employing cutting-edge non-orthogonal multiple access (NOMA) techniques, index modulation multiple access (IMMA)introduces an efficient methodology. By leveraging index modulation (IM), IMMA facilitates concurrent data transmission among multiple users. It enhances this process by incorporating an additional constellation diagram that conveys extra information bits per channel utilization. In this work, we conduct a comprehensive investigation. We derive the theoretical capacity of the IMMA system and analyze mutual information across receiver channel estimation scenarios—ranging from perfect to imperfect. To validate our derivations, we execute Monte Carlo simulations, affirming our theoretical results. Notably, our findings confirm that the derived theoretical capacity formula acts as an upper bound for simulated mutual information curves. Additionally, we identify conditions for achieving the derived …

Authors

Raed Mesleh,Nareeman Jibreel,Abdelhamid Younis

Journal

Journal of Communications and Networks

Published Date

2023/12

Impact of channel imperfections on variant SMTs MIMO systems over revised Nakagami-m channel model

Recently, a revised model for the Nakagami-m multiple-input multiple-output (MIMO) channel has been proposed, yielding distinct results and conclusions compared to the existing model. This article focuses on evaluating and discussing the performance of MIMO space modulation techniques (SMTs) transmission schemes, namely space shift keying (SSK), quadrature space shift keying (QSSK), spatial modulation (SM), and quadrature spatial modulation (QSM), over the revised channel model. The evaluation considers spatial correlation, imperfect channel state information (CSI), and examines various performance metrics such as average bit error rate (ABER), mutual information, and capacity. Specifically, a closed-form expression for the ABER is derived under the assumption of a maximum-likelihood (ML) receiver. Additionally, formulas for mutual information and capacity are derived and thoroughly discussed …

Authors

Khadiga Eltira,Abdelhamid Younis,Raed Mesleh

Journal

AEU-International Journal of Electronics and Communications

Published Date

2023/10/1

UAV Communications in 6G Cell-Free Massive MIMO Systems

Cell-free massive multiple input multiple output (MaMIMO) is perceived as a capable solution for the induced inter-cell interference, and fair quality of service distribution among users in sixth generation (6G) networks. As well, non-terrestrial networks, and specifically unmanned aerial vehicle (UAV) communications, are viewed for an integrated air-ground networks that will provide the needed coverage for rural areas and recovery services. Yet, the strong line of sight affects of the UAV links produces a challenging integration, which can be averted by exploiting cell-free structure. Hence, it is the aim of this study to describe existing literature on UAV based cell-free MaMIMO networks. The presented study will accentuate UAV use cases and 6G new technologies that will further support this integration. Future research directions and gaps are also identified.

Authors

Nagla Abuzgaia,Abdelhamid Younis,Raed Mesleh

Published Date

2023/5/21

A Secure MIMO Wireless Communication Systems Based on Hamiltonian Graphs and Artificial Noise

In this article, a secure multiple–input multiple–output (MIMO) wireless communication system is presented and discussed. The proposed system relies on Hamiltonian graphs that are known between the transmitter (Alice) and the legitimate receiver (Bob) and not accessible for any third party intercepter. Lack of knowledge for the proper graph at the eavesdropper (Eve) is shown to substantially degrade the detection capability, where an average bit error rate (ABER) of around 0.5 is reported regardless of the considered signal-to-noise-ratio (SNR) value. The generated graph is used to construct a cycle, where the sequence of data bits to be transmitted at each time instant is converted to a decimal number and the number following this decimal number on the cycle is modulated. As well, Alice transmits a pre designed artificial noise (AN) that is know at Bob but not at Eve to enhance the secrecy rate (SR) of the …

Authors

Raed Mesleh,Mohammad Abudayah,Omar Hiari,Abdelhamid Younis

Published Date

2022/5/23

Nakagami- MIMO Channel Model

Nakagami- is a widely adopted generalized channel model as it fits closely to the majority of measured fading radio channels. As well, the mathematical model for Nakagami- is more analytically tractable than other well-known fading channels, which attracted considerable interest among the research community. Original channel model was proposed mainly for single–input single–output (SISO) systems, where the envelope follows the Nakagami distribution while the phase is assumed to be uniformly distributed. However, such model is shown previously to be inaccurate for multiple–input multiple–output (MIMO) systems accomplishing multiplexing gains such as spatial multiplexing (SMX) and space modulation techniques (SMTs). As such, a different Nakagami- MIMO channel model was suggested and shown to correctly models the behavior of the channel parameters under different conditions. Yet, it is revealed …

Authors

Raed Mesleh,Osamah Badarneh,Abdelhamid Younis

Published Date

2022/3/29

Simultaneous wireless information and power transfer in resonant beam charging

Simultaneous wireless information and power transfer (SWIPT) architecture is commonly applied in wireless sensors or Internet of Things (IoT) devices, providing both wireless power sources and communication channels. However, the traditional SWIPT transmitter usually suffers from cross-talk distortion caused by the high peak-to-average power ratio of the input signal and the reduction of power amplifier efficiency. This paper proposes a SWIPT transmitting architecture based on an asynchronous space-time-coding digital metasurface (ASTCM). High-efficiency simultaneous transfer of information and power is achieved via energy distribution and information processing of the wireless monophonic signal reflected from the metasurface. We demonstrate the feasibility of the proposed method through theoretical derivations and experimental verification, which is therefore believed to have great potential in wireless …

Authors

Zhen Jie Qi,Jun Yan Dai,Si Ran Wang,Qun Yan Zhou,Wankai Tang,Kaicen Wang,Peng Zhang,Shuo Liu,Long Li,Qiang Cheng,Tie Jun Cui

Journal

Chinese Optics Letters

Published Date

2023/8/10

Cooperative Amplify and Forward Space Modulation MIMO Techniques: Capacity Analysis With Channel Imperfections

This paper presents novel theoretical capacity calculation for amplify and forward (AF) cooperative multiple–input multiple–output (MIMO) space modulation techniques (SMTs). In particular, capacity is derived by maximizing mutual information and three SMTs are considered for illustration purposes. Namely, space shift keying (SSK), spatial modulation (SM) and quadrature spatial modulation (QSM) are discussed. The proposed analysis investigates the way spatial symbols are transmitted in the cooperative link. It is assumed that both source–relay and source–destination links convey spatial symbols through the channel and the channel is a source of information. Yet, the relay–destination link is just a channel gain and conveys no spatial information. As such, the derived capacity formula is shown to depend on the channel gain between the relays and the destination as well as the amplification factor at the AF …

Authors

Khadiga Farage Eltira,Nareeman Alawamy,Salma Elkawafi,Abdelhamid Younis,Raed Mesleh

Published Date

2021/10/11

Cooperative Amplify and Forward SSK Sparse Code Multiple Access System: Performance Analysis

In this manuscript, a novel approach is proposed to enhance the performance of sparse code multiple access (SCMA) systems through facilitating the advantages of co-operative multiple-input multiple-output (MIMO) systems. In particular, MIMO-Space shift keying (SSK) system is adopted because of its inherent advantages. As well, amplify and forward (AF) cooperative relays are assumed. The performance of the presented system is studied over Rayleigh fading channels in terms of average bit error ratio (ABER) and compared to the performance of SCMA-SSK-MIMO systems. Reported results reveal the considerable enhancements attained from adding the cooperative technique. The superiority of the presented system over orthogonal multiple access (OMA) in terms of ABER is also depicted in the results.

Authors

Nareeman Jibreel,Khadiga Eltira,Abdelhamid Younis,Raed Mesleh

Published Date

2021/5/25

Mutual Information and Capacity Analysis of Index Modulated OFDM

High data rates and low power consumption are needed to cope with the increasing demands for wireless communication also with the increase in the number of connected devices and being part of everyday life. However, work on technology provides the needed requirements lead researchers straight forward through the next generation. Fifth generation (5G) services are being initiated based existed systems and enabling new concepts. The index modulation (IM) is one of the technologies that has been proposed for more efficient spectral and power usage. Specifically, orthogonal frequency division multiplexing (OFDM) with IM that characterized by activating some of the sub–carriers and keeping the rest unused, consequently, more information is sent with lower power consumption. This study represents a capacity analysis for OFDM–IM over Rayleigh fading channels. The theoretical capacity along with the …

Authors

Aya Abdelgader,Abdelhamid Younis,Raed Mesleh

Published Date

2021/10/11

A review on resonant beam communication with simultaneous wireless data transmission and energy harvesting techniques

Limited power sources in wireless sensor network and Internet of Things (IoT) devices are major obstacles that prevent extensive growth. Thereafter, wireless energy harvesting methods were developed to provide energy for these devices and prolong their lifetime. In this chapter, an in-depth review of the essential and resonant beam charging (RBC) energy harvesting method is described. Besides, a detailed explanation of the system model, working mechanism, and mathematical analysis of the RBC system is furnished and discussed. In addition, improving the overall system efficiency using an adaptive control system is introduced. The recent RBC-simultaneous wireless information and power transfer (SWIPT) system, which is implemented to support data and power transfer, is studied and named resonant beam communication (RBCom). An analytical model and mathematical analysis of RBCom are provided. Finally, the scheduling algorithm for multiple users charging is presented while considering other latent alternatives.

Authors

Ehab Ali,Abdelhamid Younis,Raed Mesleh

Published Date

2021/12/9

Impact of Channel Correlation on the Performance of Acousto Optical Modulator–Free Space Optical System

Acousto optical modulation–free space optical (AOM-FSO) systems have been recently proposed to mitigate channel impairments through externally modulating the laser beam. Yet, associated receivers rely on the usage of multiple photo diodes (PD) that are spatially separated. Considering the field of view of the PD and the compact size of the receiver, enough spacing might not be feasible and channel correlation may exist. Hence, this study investigates the impact of channel correlation on the performance of a AOM-FSO system. In particular, the average bit error rate (BER) performance is evaluated over a correlated log-normal turbulent channel. The derived formula is corroborated through Monte Carlo simulation results and good accuracy is reported over wide range of system and channel parameters. It is revealed also that the AOM-FSO system is robust to channel correlation and marginal performance …

Authors

Ayat Hamad AL-Olaimat,Raed Mesleh,Omar Hiari,Abdelhamid Younis

Published Date

2021/10/11

Index Modulation for 6G Communications

The past decades have witnessed surges in data throughput and the number of connected nodes throughout the fourth generation (4G) and fifth generation (5G) upgrades. Recent studies also forebode these increases in the future sixth generation (6G) networks, especially when the Industrial Internet of Things (IIoT) and space-air-ground network integration can be widely implemented in the 2030s. These tremendous increases will undoubtedly result in increasingly stringent requirements of spectral efficiency and energy efficiency of communication systems.In recent years, index modulation (IM) has attracted researchers’ attention as a means of meeting these two requirements. Different from conventional amplitude-phase modulation schemes, index modulation employs one or more index domain (s) in addition to the classic amplitude-phase constellations. Therefore, index modulation offers a means to form a higher-dimensional modulation scheme, which considerably enhances the spectral efficiency under proper system configurations. By index modulation, only a subset of transmit antennas/orthogonal subcarriers/time slots will be activated to form a unique activation pattern. Consequently, the index of activation pattern can be used to modulate extra bit streams, in addition to the bit streams modulated by constellation symbols. As a newborn paradigm in infancy, there are still a large number of open research questions awaiting solutions, and further research activities are of high importance to ultimately promote index modulation to the practical stage. More state-of-the-art communication technologies and the latest communication paradigms …

Authors

Shuping Dang,Marco Di Renzo,Miaowen Wen,Marwa Chafii,Youngwook Ko,Bartolomeu F Uchôa-Filho,Abdelhamid Younis

Published Date

2021/12/3

Cooperative Communications Based Quadrature Space Shift Keying: An Information–Theoretic Approach

In this paper, we consider the analysis of mutual information and system capacity in cooperative half–duplex amplify and forward (AF) relaying system based multiple– input multiple–output (MIMO)-quadrature space shift keying (QSSK). To this end, we first derive an analytical expression for theoretical mutual information and then it is employed to derive a closed–form upper bound expression for the system capacity. Interestingly, the derived capacity expression shows that the system capacity is independent of channel distribution. Some representative numerical examples are presented to study the impact of different system parameters on the mutual information and system capacity. As a benchmark, the results for a similar system employing MIMO-space shift keying (SSK) are provided. The results demonstrate that the spectral efficiency can be enhanced as the number of transmit antenna increases, whereas it …

Authors

Khadiga Farage Eltira,Nareeman Alawamy,Abdelhamid Younis,Raed Mesleh,Osamah Badarneh

Published Date

2021/10/11

Capacity analysis of cooperative amplify and forward–quadrature spatial modulation MIMO system

Quadrature spatial modulation (QSM) multiple-input multiple-output system attracted substantial research interests lately driven by the several promised advantages. As well, cooperative communication is well-known to enhance the diversity gain and the overall system performance. In this paper, the theoretical capacity of amplify and forward (AF)-QSM system is derived and analyzed. In particular, the mutual information is first obtained and used to obtain the capacity. Derived formulas are corroborated through Monte Carlo simulation results over wide range of system and channel parameters. Besides, the impact of various parameters on the capacity and the mutual information of the studied system is investigated. The performance of AF-QSM is compared with AF-spatial modulation system and superior gains are reported. It is revealed that the capacity of AF-QSM is independent of the channel fading …

Authors

Khadiga Eltira,Abdelhamid Younis,Raed Mesleh

Journal

Wireless Networks

Published Date

2021/11

On the Theoretical Capacity of Cooperative Amplify and Forwards MIMO Sparse Code Multiple Access Systems

Novel capacity analysis for cooperative amplify and forward (AF) sparse code multiple access (SCMA) Multiple–input multiple–output (MIMO) system is presented in this study. SCMA is the code domain approach of Non–orthogonal multiple access (NOMA) schemes that attracted substantial research interest in the past few years. SCMA is combined with MIMO techniques and studied for cooperative AF network. In particular, spatial multiplexing (SMX), Spatial modulation (SM) and Space shift keying (SSK) MIMO techniques are considered. Theoretical capacity formulas are derived for the overall system and substantiated through Monte Carlo simulation results over variant fading channel distributions. As well, the conditions under which the theoretical capacity can be achieved are analyzed and discussed. Reported results reveal that AF–SCMA-SSK system outperforms other techniques and near capacity …

Authors

Khadiga Eltira,Nariman Alawami,Abdelhamid Younis,Raed Mesleh

Published Date

2021/5/25

Location Prediction in Mobile Cellular Networks: Machine Learning Approach

This paper presents a method to predict the outdoor location of the mobile cellular network users based on the crowdsourcing model. In this method, the Received Signal Strength (RSS) information of the serving and neighboring stations along with their locations are fed to a machine learning algorithm to build a model that predicts the distance between the mobile station (MS) and base station (BS)s. When computing the location of the MS, two methods are proposed. The first one is using Trilateral Localization Algorithm to estimate the final location, and the second one is using the k Nearest Neighbors (KNN) algorithm to predict the MS position from the previous output distances with the associated BSs location. Lastly, a comparison between all the performed techniques is presented in this paper. The mobile phone users' data used in this research is collected by Crowd-sourcing tool app developed by Tatweer …

Authors

Alaa Fathi Alshweihdi,Esra Abduljalil Alamrouni,Salma Mohamed Elkawafi,Abdulrhman Mohammed Osama Elzwaie,Hana Abdulnabi Shamata,Asma Najem Alfergani,Abdelhamid Younis

Published Date

2021/10/11

Performance analysis of sparse code multiple access with variant MIMO techniques

Performance analysis, in terms of the (ABER), mutual information and theoretical capacity, for sparse code multiple access (SCMA) with variant multiple-input multiple-output (MIMO) techniques is presented and thoroughly discussed in this article. In particular, novel combination between space modulation techniques (SMTs) and SCMA is proposed and analyzed. As well, the performance of spatial multiplexing (SMX)-SCMA MIMO system is presented and used as a benchmark for the sake of comparison. Additionally, several designs for the mother constellation (MC) matrices are studied and their impact on the performance of the considered MIMO system is investigated. It is reported that different MC designs can lead to different performance and the performance of both MIMO systems can be optimized based on the considered codebook design. The closed-form analytical upper bound of the ABER over Rayleigh …

Authors

Nareeman Jibreel,Salma Elkawafi,Abdelhamid Younis,Raed Mesleh

Journal

Physical Communication

Published Date

2020/4/1

See List of Professors in Abdelhamid Younis University(University of Benghazi)

Abdelhamid Younis FAQs

What is Abdelhamid Younis's h-index at University of Benghazi?

The h-index of Abdelhamid Younis has been 15 since 2020 and 19 in total.

What are Abdelhamid Younis's top articles?

The articles with the titles of

Performance analysis and comparison of a novel Steiner-Quadrature Space Shift Keying (S-QSSK) scheme in massive MIMO systems

Capacity analysis of index modulation multiple access system

Impact of channel imperfections on variant SMTs MIMO systems over revised Nakagami-m channel model

UAV Communications in 6G Cell-Free Massive MIMO Systems

A Secure MIMO Wireless Communication Systems Based on Hamiltonian Graphs and Artificial Noise

Nakagami- MIMO Channel Model

Simultaneous wireless information and power transfer in resonant beam charging

Cooperative Amplify and Forward Space Modulation MIMO Techniques: Capacity Analysis With Channel Imperfections

...

are the top articles of Abdelhamid Younis at University of Benghazi.

What are Abdelhamid Younis's research interests?

The research interests of Abdelhamid Younis are: Wireless Communications, Communication Theory, Spatial Modulation, MIMO

What is Abdelhamid Younis's total number of citations?

Abdelhamid Younis has 2,237 citations in total.

What are the co-authors of Abdelhamid Younis?

The co-authors of Abdelhamid Younis are Cheng-Xiang Wang, MAE, MEASA, FRSE, FIEEE, FIET, Martin Dawson, Raed Mesleh, Mark Beach, Jonathan J.D. McKendry, Osamah S. Badarneh.

    Co-Authors

    H-index: 76
    Cheng-Xiang Wang, MAE, MEASA, FRSE, FIEEE, FIET

    Cheng-Xiang Wang, MAE, MEASA, FRSE, FIEEE, FIET

    Heriot-Watt University

    H-index: 68
    Martin Dawson

    Martin Dawson

    University of Strathclyde

    H-index: 47
    Raed Mesleh

    Raed Mesleh

    German Jordanian University

    H-index: 46
    Mark Beach

    Mark Beach

    University of Bristol

    H-index: 36
    Jonathan J.D. McKendry

    Jonathan J.D. McKendry

    University of Strathclyde

    H-index: 25
    Osamah S. Badarneh

    Osamah S. Badarneh

    German Jordanian University

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