Abstract In wireless communication systems the data rate, capacity, coverage, and spectral efficiency; can be enhanced with multi-carrier transmission and multi-antenna, then the overall wireless communication system performance is greatly enhanced by combining OFDM and MIMO schemes, MIMO helps in increasing the throughput where as OFDM spreading out the frequency selective fading channel over many symbols. In this thesis evaluating performance of the system depends on both link and system levels, where the measure of performance is represented in the throughput, cell radius and the effective signal to interference plus noise ratio (SINR). It also depends on the employed capacity criterion and it takes into account the impact of adaptive modulation and coding. the worked scenarios start from a link level extending to a system level in 3GPP LTE. To achieve the above a number of tasks followed by observations are carried out. They start by analysis of the equations and a Matlab program is written to calculate the cell edge throughput, cell coverage and DL capacity. After the programs implementation, the multi antenna transmission effect is noted on the arrival throughput when taking into account the modulation technique. When increasing the order of the antenna and the throughput is also increased, but it must be traded off with the probability of error; Coverage has also improved by decreasing the order of the modulation technique. For the system level with different traffic, the overall throughput of the system and the capacity of the network are determined by the number of resource blocks (RBs). These RBs depend on the bit rate of the service and bit rate for each RB. The adopted scenarios in this thesis start from link to system, where the features are represented in a flexible base station and user configurations, channel modeling with path loss, user mobility, also at different transmitter and receiver (MIMO). The approaches are useful in single user and multi-user MIMO, then all of the above can be standardized by metrics: capacity, throughput, spectral efficiency, user QoS etc. Finally thesis conclusion and some future work as an extension of this work are presented.
احمد محمد التانزفتى (2013)

With the growth of modern digital technologies, demand for transmission multimedia and digital images, which require more storage space and transmission bandwidth, has been increased rapidly. Hence, developing new image compression techniques for reducing data size without degrading the quality of the image, has gained a lot of interest recently. In this study, an adaptive multiresolution image decomposition (AMID) algorithm is proposed and its application for image compression is explored. The developed algorithm is capable of decomposing an image along the vertical, horizontal, and diagonal directions using the pyramidal multiresolution scheme. Compared to the wavelet transform, the AMID can be used for decimation with the guarantees of perfect signal reconstruction. Furthermore, the application of the AMID for image compression is explored and its performance is compared with the state-of-the-art image compression techniques. The performance of compression method is evaluated using peak signal-to-noise ratio and compression ratio. Experimental results have shown promising performance compared with the results of using other image compression approaches
Osama A. Alkishriwo(9-2020)

تعطي هذه الاطروحة خلفية عن أجهزة الموبيل , الشبكات الاسلكية, تطبيقات الشبكات الاسلكية والانترنت موبايل كما أعطت خلفية عن تطيبقات البرتوكولات اللاسلكية والبنية التحتية للوب وذلك لتحديث تطيبقات الموبايل باستخدام لغة HTML واللغات الجديدة مثل WML و XML الناطقة. ولقد افترضت الاطروحة ان هناك معرفة مسبقة بلغات تصميم صفحات الويب وهي HTML و XHTML وتطرقت الى بعض المبادئ للغة JSP.إن المعضلة هذه الايام تكمن في كيفية التحادث بين اللغات المختلفة للانترنت وايصالها الى الاجهزة المتنوعة مثل PC Browser – PDA – أو أجهزة النقال المختلفة ، وتعزى هذه المشكلة الى وجود اختلافات في قدرة الاجهزة من حيث حجم الشاشة وقدرة استقبالها للوسائط المتعددة (الصوت والصورة والفلاش).ولحل هذه المشكلة سوف نقوم باستخدام قاعدة بيانات تحتوى جميع قدرات الاجهزة المعلوماتية وسوف يتم ذلك عن طريق استخدام (Mobile Aware Software) وهو قاعدة بيانات شاملة تحتوى على اكثر من 500 جهاز بأقسامه ، وقد تم تنفيذ هذه الطريق بتصميم صفحة أنترنت للكمبيوتر وإدخال بعض الاضافات وبعض الخطوات البسيطة لاتاحة نقل هذه الصفحة وعرضها في الاجهزة النقالة المختلفة.وتم اثبات وتحقيق هذا الحل عن طريق استخدام موقع لقسم الهندسة الكهربائية والالكترونية والذى تم تحويله الى اجهزة مختلفة ولاحظنا الاختلافات التى طرأت على الموقع ، وبهذه الطريقة نستطيع الان نقل أي موقع الى اي جهاز أخر في دقائق معدودة بدون اللجوء الى لغات معقدة او ملفات كبيرة. Abstract This thesis provides some background on mobile devices, wireless networks, mobile internet and wireless application networks and some back ground about wireless application protocol, web infrastructure for mobile application development using HTML, and newer markup language such as wireless markup language (WML) and Voice XML.It assumes that the web page designs using HTML and XHTML are already know. It also provides some background on basic JSP.The Conversion between Internet languages and delivering them to multiple devices is problem now days, for example PC browser, PDA and Mobile Phone Devices. This is due to differences in device capability and requirements including Markup language and screen size and media capabilities ((images flash, audio)).To solve the problem we will use data store which is contain all device capability information’s ,by using the Mobile Aware software to provides a comprehensive device database containing more than 500 devices and device classes, and it’s done by design a normal webpage for PC Browser and inserting some tag and adding a few simple steps to provides the possibility of transfer the web site internet to multi devices such as PDA, Mobile devices. It was demonstrated by using real web site for Electrical & Electronic department which is transferred to different devices, and we have noted changes that took place for the web site, and now we are able to transfer any web site to any device in few minutes without having to know a complicated language or large files.
ميسون عمر كريم (2006)