Yazar "Abdulateef, Ihsan Amjad" seçeneğine göre listele

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    A review software defined networking for Internet of things
    (Institute of Electrical and Electronics Engineers Inc., 2020) Mohammed, Alaa Hamid; Khaleefah, Raad M.; Hussein, M.K.; Abdulateef, Ihsan Amjad
    With the emergence of Internet of Things (IoT), there is now increasing interest in simplifying control of wireless networks. This is a very challenging task, which includes information acquisition, information analysis, decision-making and large-scale IoT networks implementing action. Resulting in research to explore the integration of Software Defined Networking (SDN) and IoT to make network control simpler, easier, and less strainy. SDN is a promising new paradigm shift capable of enabling a simplified and robust wireless programmable network to serve a range of physical objects and applications. This review article begins with SDN emerging. Recent significant developments in the wireless and optical domains are then highlighted with a view to integrating SDN and IoT. The SDN and IoT development issues are often explored from a security and scalability viewpoint. © 2020 IEEE.
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    An erbium-doped EDFA amplifier pump with a 1550-Nm pumped erbium-doped fibre
    (Institute of Electrical and Electronics Engineers Inc., 2022) Dheyab, Abdullah; Kshash, Abdullah Dawood; Al-Sabti, Saif Mohamed Baraa; Abdulateef, Alaa Amjed; Abdulateef, Ihsan Amjad; Elwiya, Lina
    To take full use of the large bandwidth given by fibre optics and the flexibility afforded by wireless broadcasting on a widespread scale, RoF-based optical-wireless networks are widely regarded as the most important approach for improving capability, coverage, bandwidth, and mobility. WDM-RoF-PON architectures are described and demonstrated in this document. In order to verify the viability of the associated designs, a number of approaches including injection locking, direct/external modulation, re-modulation, and homodyne detection were used. The goal of this study is to create a WDM-RoF-PON using a reflective semiconductor optical amplifier (RSOA) to transmit 2.5 Gb/s baseband (BB) and 1.25 Gb/s wireless signalling downlink and 1 Gb/s (BB) signal in uplink over a 25 km single mode fibre (SMF) and wireless downlink signal over a 25 km SMF and 5.2 m free-spread fibre (FSF) link. This research also aims Downlink wired and remote communications may be successfully sent using both the confused light infusion plan and the twofold sideband optical transporter concealment (DSBCS) approach. In order to reuse the downlink carrier for uplink transmission, RSOA is employed.
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    Overhead power line inspection using a prediction model based on system analysis Surveillance of Temperature Using a Modeled Optical System
    (Institute of Electrical and Electronics Engineers Inc., 2023) Abdulateef, Ihsan Amjad; Hasan, Sami; Mohammed, Alaa Hamid; Rahi, Sabah Ali; Shwaysh, Mustafa Muslih; Qaisi, Harith A.
    Modulation of an optical fiber's index of refraction at regular intervals is known as 'Fiber Bragg Grating.'. It operates on the basis that a rise in temperature above the reference point causes a change in the wavelength of the light source, and vice versa. In this study, we discuss the design and analysis of a Fiber Bragg Grating Sensor for tracking and measuring powerline temperatures across a certain temperature range. The highest reflectance of the Bragg wavelength was calculated by Optisystem simulation. The FBG interrogator claims that temperature changes are associated with shifts in the reflected light spectrum.
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    Overhead power line inspection using a prediction model based on system analysis surveillance of temperature using a modeled optical system
    (Altınbaş Üniversitesi / Lisansüstü Eğitim Enstitüsü, 2023) Abdulateef, Ihsan Amjad
    Modulation of an optical fiber's index of refraction at regular intervals is known as "Fiber Bragg Grating.". It operates on the basis that a rise in temperature above the reference point causes a change in the wavelength of the light source, and vice versa. In this study, we discuss the design and analysis of a Fiber Bragg Grating Sensor for tracking and measuring powerline temperatures across a certain temperature range. The highest reflectance of the Bragg wavelength was calculated by Optisystem simulation. The FBG interrogator claims that temperature changes are associated with shifts in the reflected light spectrum.
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    Parameters for non-solitons in fiber and their impact on transmission performance over long distances
    (Institute of Electrical and Electronics Engineers Inc., 2022) Salih, Mustafa Muhanad M.; Alrubaee, Saif H.; Dheyab, Abdullah; Abdulateef, Ihsan Amjad; Abdulsattar, Nejood Faisal; Abbas, Fatima Hashim
    One area of study that has gained popularity recently is communication technology. Due to the exponential growth in data transfer rates, optical fibre communication (OFC) is the only viable solution. The OFC technology provides extremely high bandwidth and rates of up to several gigabits per second. Optical fibre can carry a lot of data while being quite lightweight. Unfortunately, attenuation, dispersion, and nonlinearity are all phenomena of optical fibre transmission systems that might increase fibre signals. Rather of relying on dispersive effects, an improved approach lies in the use of optical solitons. Different from non-soliton communication systems, solitons do not grow in size as the distance between nodes increases. This research compares and contrasts the efficiency of solitons and non-solitons in fibres. By comparing the eye diagrams and bit error rates, we may deduce that soli-ton-based fibre systems are the most distortion-free, whereas non-soliton-based fibre systems exhibit some level of background noise.
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    Performance analyses of channel estimation and precoding for massive MIMO downlink in the TDD system
    (Institute of Electrical and Electronics Engineers Inc., 2020) Abdulateef, Alaa Amjed; Ibrahim, Shakir Mahmood; Mohammed, Alaa Hamid; Abdulateef, Ihsan Amjad
    The fundamental limitation of massive MIMO technology is pilot contamination effect. This effect occurs during uplink training when terminals use the same orthogonal signals. In this paper, a pilot reuse factor with large scale fading precoding is proposed to mitigate the pilot contamination effect. The pilot reuse factor is designed to assign unique orthogonal signals to the adjacent cells. These unique orthogonal signals are reused only within the cell and hence, intra-pilot contamination is the only concern. Large scale fading precoding is then used to mitigate the intra-pilot contamination effect. The average achievable sum rate is computed for different pilot reuse factors. Experimental results through MATLAB simulation show that a higher pilot reuse factor gives better average achievable sum rates. © 2020 IEEE.