Raghad Z Yousif

Salahaddin University - Erbil | SUH · Department of Physics

This study involves a simulation-based optimization of a wavelength division multiplexing (WDM) in a passive optical network system, and an RZ modulator, with incorporating a vertical cavity surface emitting laser (VCSEL) and an edge-emitting (CW) laser alternately. Two scenarios have been proposed. First, 8 VCSEL/CW lasers, having distinctive freq...

In this work, the researchers looked into how fiber Bragg grating (FBG) techniques and predistortion devices affected front-haul radio-over-fiber (RoF) systems' optical millimeter wave (mm-wave) transmission. The major goal was to develop a low-cost, high-performance RoF mm-wave-based system that could transmit baseband signals at various rates (1,...

Passive Optical Network (PON) is a promising 5G optical fiber network technology, that can enhance reliability data rate, and bandwidth saving. This simulation- based study investigates the feasibility of implementing a vertical cavity-surface emitting laser (VCSEL) optical source along with wavelength-division multiplexing (WDM) for designing a PO...

The next generation of wireless communication systems requires simultaneous and reliable connectivity on a huge scale. Selecting the proper channel coding for sparse code multiple access (SCMA) as code domain non-orthogonal multiple access techniques is crucial for meeting the needs of the internet of things (IoT), which is the foundational technol...

In the latest generation of optical fiber systems, broadband telecommunication network access with ultrahigh speed services is almost realized by passive optical network (PON) radio over fiber system. In this study, a least complex and cost-effective downstream radio over fiber system (RoF)-based direct modulation vertical cavity surface emitting l...

In this study, the performance of FSO link,based on the integration of three different techniques, namely hybrid offset quadrature phase shift keying/amplitude modulator of 300 GHz carriers, equipped with a predistortion device (PD), and cascaded dual erbium-doped fiber amplifier (EDFA) is examined under fog and dust storms as extreme weather condi...

With the tremendous growth of searchable visual media, the content-based medical image retrieval and computer-aided diagnosis systems have become popular in recent years to improve knowledge and provide facilities for radiologists. Medical images transferred throughout public networks demand a mechanism that guarantees image privacy, ownership and...

Demanding extra Bandwidth and high data rates has been meet by the integration both of wired and wireless communication systems. For that the Radio over Fiber (RoF) technology has gained a traction. In this article a Coherent Optical Orthogonal Frequency Division Multiplexing (CO-OFDM) is proposed as the main wired system for transmitting data at h...

With the tremendous growth of searchable visual media, the content-based medical image retrieval and computer-aided diagnosis systems have become popular in recent years to improve knowledge and provide facilities for radiologists. Medical images transferred throughout public networks demand a mechanism that guarantees image privacy, ownership and...

In this work, the effects of both Pre-distortion devices and fiber brag grating (FBG) techniques on the optical (mm-wave) in Front haul RoF have been investigated. The scope of this work is to design a simple and low-cost but efficient RoF mmm-wave-based system by utilizing a single Dual Drive Mach- Zehnder modulator (DDMZM) to feed up-converted ba...

Radio over fiber system is an integral part of the 5-Generation technology which has undergone enormous changes in the last decade. This work presents a new model for the fronthaul ROF system based on the (VSCEL) as an alternative to the classical CW laser, making use of its interesting properties, that includes narrow bandwidth and high directiona...

Intelligent and automated systems for diagnosing heart disease play a key role in treatment of heart disease and hence mitigating the possibility of heart disease, heart failure or sudden death. Thus, a Computer-Aided Design CAD system can provide a doctors with a clue about the category of patient heart disease, which might be Normal Sinus Rhythm,...

Novel Coronavirus disease 2019 (COVID-19) is a type of pandemic viruses that causes respiratory tract infection in humans. The clinical imaging of Chest X-Ray (CXR) by Computer-Aided Diagnosis (CAD) plays an essential role in identifying the patients infected by COVID-19. The objective of this paper presents a CAD method for automatically classifyi...

Intelligent and automated systems for diagnosing heart disease play a key role in treatment of heart disease and hence mitigating the possibility of heart disease, heart failure or sudden death. Thus, a Computer-Aided Design CAD system can provide a doctors with a clue about the category of patient heart disease, which might be Normal Sinus Rhythm,...

Concurrent engineering (CE) aspires to foster a collaborative environment in which all players work cooperatively to optimize resource use. However, such variables can complicate execution in organizations. This analysis aims to detail creating and implementing a CE model in an Iraqi textile factory. Administrative and quality management procedures...

One of the most significant and daunting activities in today's world is temperature prediction. The meteorologists traditionally predict temperature via some statistical models aimed to forecast the fluctuations that might have happened to atmospheric parameters such as temperature and humidity. The main objective of this paper is to build an intel...

span>One of the most significant and daunting activities in today's world is temperature prediction. The meteorologists traditionally predict temperature via some statistical models aimed to forecast the fluctuations that might have happened to atmospheric parameters such as temperature, humidity, etc. The main objective of this paper is to build a...

The quantity of prepared and stored data in the cloud is rising dramatically. The common storage devices at both hardware and software levels cannot satisfy the necessity of the cloud. This fact motivates the requirement for principles that can manage this difficulty. Hadoop is an expanded principle proposed to succeed in the big data challenge tha...

Developing a confident Hadoop essentially a cloud computing is an essential challenge as the cloud. The protection policy can be utilized during various cloud services such as Platform as a Service (PaaS), Infrastructure as a Service (IaaS), and Software as a Service (SaaS) and also can support most requirements in cloud computing. This event motiv...

Discrete wavelet transform (DWT) is often implemented by an iterative filter bank; hence, a lake of optimization of a discrete time basis is observed with respect to time localization for a constant number of zero moments. This paper discusses and presents an improved form of DWT for feature extraction, called Slantlet transform (SLT) along with ne...

Diabetic retinopathy (DR) is considered as one of the global diseases of blindness, especially for aged people. The main reason behind this disease is the complication of diabetes in retinal blood vessels. Usually, the early warning signs are not observed. Screening is an important key for the diagnosis of early stages of diabetic retinopathy. In t...

The amount of data processed and stored in the cloud is growing dramatically. The traditional storage devices at both hardware and software levels cannot meet the requirement of the cloud. This fact motivates the need for a platform which can handle this problem. Hadoop is a deployed platform proposed to overcome this big data problem which often u...

[This corrects the article DOI: 10.1155/2019/7632308.].

The thyroid nodule is one of the endocrine issues caused by an irregular cell development. This rate of survival can be improved by earlier nodule detection. Accordingly, the accurate recognition of the nodule is of the utmost importance in providing powerful results in building the survival rate. The reduction in the accuracy of manual or semiauto...

Thyroid nodules are cell growths in the thyroid which might be for in one of two categories benign or malignant. Nodular thyroid disease is common and because of the associated risk of malignancy and hyper-function; these nodules have to be examined thoroughly. Hence diagnosing thyroid nodule malignancy in the early stage can mitigate the possibili...

A Radio-over-Fiber (RoF) makes use of the advantages of wireless communication system and optical networks. It uses optical fiber as a core technology due to the enormous advantages offered by it. Making use of mobility available by wireless communication. Dispersion management and modulation were investigated for two Channel-WDM optical communicat...

The current rate of growth in computer network usage is a problematic issue motivates the inspiration to investigate less conventional solutions, similar to Network Coding (NC) which has attracted a lot of attention lately, to improve the bandwidth utilization and latency in computer networks. The objective of this paper is to show that the usage o...