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We demonstrate experimentally 4 × 10 Gbps wavelength division multiplexing repeaterless transmission system using non-return-to-zero differential phase-shift keying modulation format over 300-km standard single-mode fiber. The channels used were 1546.9, 1547.7, 1548.51 and 1549.2 nm with 100 GHz spacing. In this system design, a dispersion compensation module is used; multi-channel-chirped fiber Bragg...
Security of wireless sensor networks plays an essential role in the application they used. Due to resource limitations of sensor node, such as energy supply and memory size, pairwise keys establishment between nodes are considered a difficult problem. This paper proposes a simple shared key discovery between sensor nodes in very clear steps. The authentication protocol provides both message and entity...
A wireless sensor network (WSN) consists of thousands of sensors and one base station. Sensors are deployed in the network to monitor target area and sense information according to the applied application then send this information to the base station. Adversary can inject false information in the network or compromise the routing information between nodes or between nodes and base station. Thus make...
Wireless Sensor Network (WSN) contains a lot of sensors called nodes or motes. These sensors sense the environmental data, according to the application, and then communicate with each other, and finally send these data or readings back to the base station. WSN security is an important issue, since motes are usually left to operate unattended in the environment where they were deployed. Intruder may...
The similar particle assembly (SPA) model proposed for large‐scale discrete element method simulation was validated. The SPA model describes the scaling law for the motion of particles in an assembly, which is derived from the equation of motion of a particle. In the SPA model, particles with similar physical or chemical properties are represented by a single particle, which is called the representative...
This paper introduces a new technique for aircraft identification friend or foe (IFF). The technique is based on using a proposed Chaos Advanced Encryption Standard (AES) with mode-S IFF. AES has a key size of 128 bits and a substitution-linear transformation network with 10 rounds. The sensitivity of the chaos initial condition gives the algorithm the ability to use as a second key. The first key...
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