Thesis

Implementation of encryption for VoIP.

Abstract: Support for voice communications using the Internet Protocol , usually called “voice over IP (VoIP)”, has become especially attractive given the low cost, flatrate pricing of the Internet. In fact, toll quality telephony over IP has now become one of the key steps leading to the convergence of the voice, video and data communications industries. VoIP telephony or IP telephony is the transportation of voice traffic over the Internet protocol (IP) .The Internet is an interconnection between networks that use IP.

إنجليزية

Enhancement and design considerations of satellite power subsystem.

Abstract:This research intent to enhance and design an electrical power subsystem for a communications satellite in the geosynchronous orbit for a life time mission of 7-10 years. Among many types of the well known electrical power subsystems used for satellites and spacecraft, the solar array system is used to provide the satellite power requirements. The solar arrays are used to provide power to the satellite during all mission life time, while the batteries are being used to supply power to the satellite during the eclipse when there is no available power from the solar arrays.

إنجليزية

A Multi-level Steganography System Using Wavelet Transform Technique

Abstract:

Techniques and applications for information hiding have become increasingly more sophisticated and widespread. In a digital world, steganography is introduced to hide the existence of the communication by concealing a secret message file inside another unsuspicious cover file.

إنجليزية

A wavelet based audio steganography system

Abstract: Steganography is the art of information hiding in ways that prevent its detection. A message in cipher text may raise suspision, while an invisible message will not. Digital steganography uses a host data or message, known as a ''container'' or ''cover'' to hide another data or message called ''secret'' in it. An Image in audio steganography system had been proposed in this thesis in order to embed a secret image data in audio data. One embedding method is implemented in the proposed system (Least Significant Bit in time domain, and transform domain Discrete Wavelet Transform).

إنجليزية

Security Management Framework for Registry System Operating Environment

Abstract:

E-government is narrowly defined as the use of information technology,
especially the Internet and the intranet, to deliver government services and information to citizens, businesses, and other government bodies.
E-government is the most important accomplishment of Internet. There is, however, one main downside that is occurring within each process of egovernment,namely security.

إنجليزية

Performance Evaluation of First Hop Redundancy Protocol (FHRP)

Abstract:

The rapid increase of connection-demand to the internet application services, and highly traffic network bandwidth is the main reason behind the need to scale reliable network by using edundancy. In order to increase the reliability of the network, downtime must be minimized; redundancy has to be added in the critical parts of the network.

إنجليزية

VoIP Call Simulation over Wireless Local Area Network

Abstract:

Two of the major developments reshaping the telecommunication landscape are mobile wireless connectivity and the migration of voice telephone services to IP technology. These two ideas come together in networks that carry voice services over a wireless LAN (VoWLAN). However, the intrinsic characteristics of each of them cause specific issues to appear that must be addressed in order to ensure a successful deployment.

إنجليزية

Medical electrical measurements utilizing the dielectric properties of blood samples.

Abstract: The designing of blood glucose instrument needs to have a sensor that has a high sensitivity to variation in glucose level in blood, the instruments were designed and developed through years to implement a high accuracy and a harmless instruments that could be used by the patient without difficulties and gives a good reading for the amount of glucose concentration in blood. This work gives a new design for blood glucose instrument that depends in its work on the electrical properties of blood.

إنجليزية

Programmable convolutional encoder using FPGA

Abstract: In future radio systems, flexible coding and decoding architectures will

إنجليزية

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