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Carleton University - School of Computer Science Undergraduate Honours Project Winter 2010 Uncoordinated FHSS Anti-Jamming Communication Dongchao Chen 
ABSTRACT Wireless communications are often susceptible to the jamming attack in which the jammer maliciously injects packets into the wireless channels or specific layers (MAC, link, network) causing erroneous message reception and reducing throughput. Numerous protocols have been proposed for anti-jamming communication, and one of them is the FHSS (Frequency Hopping Spread Spectrum) protocol, which takes advantages of prior shared secret keys/codes between the communication partners to make the transmission unpredictable for the adversary. However, this traditional anti-jamming technique is becoming impractical when wireless communication is now vastly demanded in commercial implementations. In 2008, Strasser, Popper, Capkun and Cagalj proposed the first possible scheme (i.e., UFH scheme) in the world that broke the anti-jamming/key establishment circular dependency. The main objective of this project is to get better comprehension about UFH model and its related coding theory, at the same time to apply the original UFH scheme as a performance benchmark to explore the improved efficiency of the BMA and Merkleleaf schemes, specifically in the communication time, sender complexity and receiver complexity both in the presence and absence of attackers, and finally prove that BMA is better than Merkleleaf scheme. |
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