Improving the performance of the wireless multihop ad hoc networks faces several challenges. In omni-directional antenna based solutions, the use of the RTS/CTS mechanism does not completely eliminate the hidden-terminal ...

Galois fields are essential blocks of building many of cryptographic schemes. The main advantage of applying Galois fields over cryptographic applications are to reduce cost and increase the sufficiency of the performance. ...

In this dissertation, four approaches to improve Voice over Internet Protocol (VoIP) security is proposed. The first two approaches are aimed at encrypting/decrypting and authenticating VoIP packets, whereas the last two ...

In this work we review the problem of radar imaging satellites' dependency on ground stations to transfer the image data. Since synthetic aperture radar images are very big, only ground stations are equipped to transfer ...

Portugal is highly dependent on imported fuels when it comes to the energy sector. The government continuously aims at creating a sustainable and competitive renewable energy system. The need for balancing the supply and ...

Cryptographic protocols are implemented in hardware to ensure low-area, high speed and reduced power consumption especially for mobile devices. Elliptic Curve Cryptography (ECC) is the most commonly used public-key ...

3D-NoC architectures are the amalgamation of the 3D integration (Die stacking of 3D-IC Technology) with the increased scalability found in NoC. Originally, it was proposed to tackle the problem of increasing the number of ...

Division is one of the most fundamental arithmetic operations and is used extensively in engineering, scientific, mathematical and cryptographic applications. The implementation of arithmetic operation such as division, ...

In this work, we propose a new scheduling algorithm (the virtual frame algorithm) for handling different types of traffic using an optimization technique based on the transportation problem with upper bounds. The proposed ...