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Papers by ekhlas kadhum

Research paper thumbnail of Industrial Internet of Things Driven by SDN Platform for Smart Grid Resiliency

IEEE Internet of Things Journal, Feb 1, 2019

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Research paper thumbnail of Nanotechnology Application for Wireless Communication System

Nanotechnology for Electronic Applications, 2022

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Research paper thumbnail of MOCAB/HEFT algorithm of multi radio wireless communication improved achievement assessment

Bulletin of Electrical Engineering and Informatics, Feb 1, 2023

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Research paper thumbnail of Implementation of Spectrum Sensing based OFDM Transceiver using Xilinx System Generator

Iraqi Journal of Computer, Communication, Control and System Engineering, 2021

with the introduction of new standards at a fast pace, wireless communication is experiencing gre... more with the introduction of new standards at a fast pace, wireless communication is experiencing great development and growth, thereby raising the level of demand for radio spectrum. The spectrum, however, is a limited resource and cannot be subdivided indefinitely to satisfy any use. As a result, spectrum scarcity arises. This scarcity represents the main problem that faces the future of wireless networks. This scarcity is due to the inefficient fixed spectrum allocation technique. The Dynamic Spectrum Access (DSA) is a successful solution to reduce the spectrum scarcity that wireless communications currently face. DSA allows users without a spectrum license known as Secondary Users (SUs) to temporarily use the unused licensed spectrum. This work focuses on analysis, and design of the Cognitive Radio (CR) system forOrthogonal Frequency Division Multiplexing modulation. The OFDM transceiver system has been implemented in the first stage using the Quadrature Phase Shift Keying (QPSK) mo...

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Research paper thumbnail of Implementation of radar cross-sections model for targets with different scattering centers

Eastern-European Journal of Enterprise Technologies

Target scattering or reflection is used by radar systems to identify and detect targets. The larg... more Target scattering or reflection is used by radar systems to identify and detect targets. The larger the echo that was returned to the radar receiver, the superior the signal-to-noise ratio and the greater the likelihood of detection. The radar cross-section (RCS) determines the quantity of energy reflected from a target in radar systems. This work shows new modeling for radar targets with growing stages of fidelity. We introduce the RCS concept for straightforward point targets and extend this into additional complex states of targets with several scattering midpoints. In addition, we discuss the modeling of fluctuations in RCS with time and briefly consider the case of the polarized signal. Because the receiver and transmitter are co-located, the effort focuses on narrowband mono-static radar techniques. The RCS value changes between scans. We simulate the replicated power of a sent signal over 10,000 scanning over unit incident signals, assuming that the signal illuminates the tar...

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Research paper thumbnail of Design and Analysis WIMAX Network Based on Coverage Planning

Journal of Engineering, 2020

In this paper, wireless network is planned; the network is predicated on the IEEE 802.16e standar... more In this paper, wireless network is planned; the network is predicated on the IEEE 802.16e standardization by WIMAX. The targets of this paper are coverage maximizing, service and low operational fees. WIMAX is planning through three approaches. In approach one; the WIMAX network coverage is major for extension of cell coverage, the best sites (with Band Width (BW) of 5MHz, 20MHZ per sector and four sectors per each cell). In approach two, Interference analysis in CNIR mode. In approach three of the planning, Quality of Services (QoS) is tested and evaluated. ATDI ICS software (Interference Cancellation System) using to perform styling. it shows results in planning area covered 90.49% of the Baghdad City and used 1000 mobile subscribers and percentage connect with base station 84.3% on the establish QoS requirements .

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Research paper thumbnail of Sensorless Position Estimation Techniques for Continues Operation of IPMSM Drives Over a Wide Speed Range

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Research paper thumbnail of Designing a Secure Software-Defined Radio Transceiver using the Logistic Map

Journal of Engineering, 2021

The need to exchange large amounts of real-time data is constantly increasing in wireless communi... more The need to exchange large amounts of real-time data is constantly increasing in wireless communication. While traditional radio transceivers are not cost-effective and their components should be integrated, software-defined radio (SDR) ones have opened up a new class of wireless technologies with high security. This study aims to design an SDR transceiver was built using one type of modulation, which is 16 QAM, and adding a security subsystem using one type of chaos map, which is a logistic map, because it is a very simple nonlinear dynamical equations that generate a random key and EXCLUSIVE OR with the originally transmitted data to protect data through the transmission. At the receiver, the data will be recovered using the same key, the received data is the same at the sender, so this result shows that the transceiver work normally and calculates the BER at the end each time the SNR changed. Our results indicate that the designed transmitter and receiver perform as usual...

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Research paper thumbnail of Analyze BER Performance Of Wireless FSK Systems

This paper presents the implementation and investigates the nature of the gap by simulating 2, 4 ... more This paper presents the implementation and investigates the nature of the gap by simulating 2, 4 and 8-level FSK systems in additive white Gaussian noise channel using MATLAB, measuring the performance of theoretical systems using FSK is about 1 dB at a bit error rate (BER) of 10 -3 and widens as BER decreases.

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Research paper thumbnail of ‘Development of heterogeneous cognitive radio and wireless access network

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Research paper thumbnail of System Design of BERT Based on FPGA/DSP Hardware Implementation

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Research paper thumbnail of Industrial Internet of Things Driven by SDN Platform for Smart Grid Resiliency

IEEE Internet of Things Journal, Feb 1, 2019

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Research paper thumbnail of Performance Analysis of IEEE 802.15.4 Transceiver System under Adaptive White Gaussian Channel

International Journal of Electrical and Computer Engineering (IJECE)

Zigbee technology has been developed for short range wireless sensor networks and it follows IEEE... more Zigbee technology has been developed for short range wireless sensor networks and it follows IEEE 802.15.4 standard. For such sensors, several considerations should be taken including; low data rate and less design complexity in order to achieve efficient performance considering to the transceiver systems. This research focuses on implementing a digital transceiver system for Zigbee sensor based on IEEE 802.15.4. The system is implemented using offset quadrature phase shift keying (OQPSK) modulation technique with half sine pulse-shaping method. Direct conversion scheme has been used in the design of Zigbee receiver in order to fulfill the requirements mentioned above. System performance is analyzed considering to BER when it encountered adaptive white Gaussian noise (AWGN), besides showing the effect of using direct sequence spread spectrum (DSSS) technique.

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Research paper thumbnail of Noise Analysis based on BERT(Bit Error RateTester ) Using Hardware -in-the-loop cosimulation Based FSK Transceiver Through a Hybrid DSP/FPGA Platform

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Research paper thumbnail of Industrial Internet of Things Driven by SDN Platform for Smart Grid Resiliency

IEEE Internet of Things Journal, Feb 1, 2019

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Research paper thumbnail of Nanotechnology Application for Wireless Communication System

Nanotechnology for Electronic Applications, 2022

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Research paper thumbnail of MOCAB/HEFT algorithm of multi radio wireless communication improved achievement assessment

Bulletin of Electrical Engineering and Informatics, Feb 1, 2023

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Research paper thumbnail of Implementation of Spectrum Sensing based OFDM Transceiver using Xilinx System Generator

Iraqi Journal of Computer, Communication, Control and System Engineering, 2021

with the introduction of new standards at a fast pace, wireless communication is experiencing gre... more with the introduction of new standards at a fast pace, wireless communication is experiencing great development and growth, thereby raising the level of demand for radio spectrum. The spectrum, however, is a limited resource and cannot be subdivided indefinitely to satisfy any use. As a result, spectrum scarcity arises. This scarcity represents the main problem that faces the future of wireless networks. This scarcity is due to the inefficient fixed spectrum allocation technique. The Dynamic Spectrum Access (DSA) is a successful solution to reduce the spectrum scarcity that wireless communications currently face. DSA allows users without a spectrum license known as Secondary Users (SUs) to temporarily use the unused licensed spectrum. This work focuses on analysis, and design of the Cognitive Radio (CR) system forOrthogonal Frequency Division Multiplexing modulation. The OFDM transceiver system has been implemented in the first stage using the Quadrature Phase Shift Keying (QPSK) mo...

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Research paper thumbnail of Implementation of radar cross-sections model for targets with different scattering centers

Eastern-European Journal of Enterprise Technologies

Target scattering or reflection is used by radar systems to identify and detect targets. The larg... more Target scattering or reflection is used by radar systems to identify and detect targets. The larger the echo that was returned to the radar receiver, the superior the signal-to-noise ratio and the greater the likelihood of detection. The radar cross-section (RCS) determines the quantity of energy reflected from a target in radar systems. This work shows new modeling for radar targets with growing stages of fidelity. We introduce the RCS concept for straightforward point targets and extend this into additional complex states of targets with several scattering midpoints. In addition, we discuss the modeling of fluctuations in RCS with time and briefly consider the case of the polarized signal. Because the receiver and transmitter are co-located, the effort focuses on narrowband mono-static radar techniques. The RCS value changes between scans. We simulate the replicated power of a sent signal over 10,000 scanning over unit incident signals, assuming that the signal illuminates the tar...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Design and Analysis WIMAX Network Based on Coverage Planning

Journal of Engineering, 2020

In this paper, wireless network is planned; the network is predicated on the IEEE 802.16e standar... more In this paper, wireless network is planned; the network is predicated on the IEEE 802.16e standardization by WIMAX. The targets of this paper are coverage maximizing, service and low operational fees. WIMAX is planning through three approaches. In approach one; the WIMAX network coverage is major for extension of cell coverage, the best sites (with Band Width (BW) of 5MHz, 20MHZ per sector and four sectors per each cell). In approach two, Interference analysis in CNIR mode. In approach three of the planning, Quality of Services (QoS) is tested and evaluated. ATDI ICS software (Interference Cancellation System) using to perform styling. it shows results in planning area covered 90.49% of the Baghdad City and used 1000 mobile subscribers and percentage connect with base station 84.3% on the establish QoS requirements .

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Sensorless Position Estimation Techniques for Continues Operation of IPMSM Drives Over a Wide Speed Range

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Designing a Secure Software-Defined Radio Transceiver using the Logistic Map

Journal of Engineering, 2021

The need to exchange large amounts of real-time data is constantly increasing in wireless communi... more The need to exchange large amounts of real-time data is constantly increasing in wireless communication. While traditional radio transceivers are not cost-effective and their components should be integrated, software-defined radio (SDR) ones have opened up a new class of wireless technologies with high security. This study aims to design an SDR transceiver was built using one type of modulation, which is 16 QAM, and adding a security subsystem using one type of chaos map, which is a logistic map, because it is a very simple nonlinear dynamical equations that generate a random key and EXCLUSIVE OR with the originally transmitted data to protect data through the transmission. At the receiver, the data will be recovered using the same key, the received data is the same at the sender, so this result shows that the transceiver work normally and calculates the BER at the end each time the SNR changed. Our results indicate that the designed transmitter and receiver perform as usual...

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Research paper thumbnail of Analyze BER Performance Of Wireless FSK Systems

This paper presents the implementation and investigates the nature of the gap by simulating 2, 4 ... more This paper presents the implementation and investigates the nature of the gap by simulating 2, 4 and 8-level FSK systems in additive white Gaussian noise channel using MATLAB, measuring the performance of theoretical systems using FSK is about 1 dB at a bit error rate (BER) of 10 -3 and widens as BER decreases.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of ‘Development of heterogeneous cognitive radio and wireless access network

Bookmarks Related papers MentionsView impact

Research paper thumbnail of System Design of BERT Based on FPGA/DSP Hardware Implementation

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Industrial Internet of Things Driven by SDN Platform for Smart Grid Resiliency

IEEE Internet of Things Journal, Feb 1, 2019

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Performance Analysis of IEEE 802.15.4 Transceiver System under Adaptive White Gaussian Channel

International Journal of Electrical and Computer Engineering (IJECE)

Zigbee technology has been developed for short range wireless sensor networks and it follows IEEE... more Zigbee technology has been developed for short range wireless sensor networks and it follows IEEE 802.15.4 standard. For such sensors, several considerations should be taken including; low data rate and less design complexity in order to achieve efficient performance considering to the transceiver systems. This research focuses on implementing a digital transceiver system for Zigbee sensor based on IEEE 802.15.4. The system is implemented using offset quadrature phase shift keying (OQPSK) modulation technique with half sine pulse-shaping method. Direct conversion scheme has been used in the design of Zigbee receiver in order to fulfill the requirements mentioned above. System performance is analyzed considering to BER when it encountered adaptive white Gaussian noise (AWGN), besides showing the effect of using direct sequence spread spectrum (DSSS) technique.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Noise Analysis based on BERT(Bit Error RateTester ) Using Hardware -in-the-loop cosimulation Based FSK Transceiver Through a Hybrid DSP/FPGA Platform

Bookmarks Related papers MentionsView impact