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In this paper, we derive a moment generating function (MGF) for dual‐hop (DH) amplify‐and‐forward (AF) relaying networks, in which all nodes have an arbitrary number of antennas, with orthogonal space‐time block code (OSTBC) transmissions over Rayleigh fading channels. We present an exact error rate expression based on the derived MGF and another analytical approach to derive achievable performance...
A nano size single-mode waveguide for a silicon optical modulator was designed using the effective index method (EIM). The width of the waveguide was 350 nm for single-mode operation and the calculated optical confinement was 95.9%. The waveguide was fabricated on silicon-on-insulator (SOI) using e-beam lithography. The measured optical characteristics of the waveguide showed a propagation loss and...
We developed Autonomous Buoy, which is composed of embedded system, OPC (Optical Particle Counter) and CTD (Conductivity, Temperature, Depth) sensors, to observe underwater environment. The vehicle is an autonomous profiling float that uses a buoyancy engine to cycle horizontally while moving up and down. The autonomous buoy is controlled by embedded system composed of field-programmable gate array...
The optical properties of both phytoplankton and zooplankton were investigated in this study. The absorption spectrums of planktons were measured using an UV-visible spectrophotometer. An absorption peak was found at 670 nm for the phytoplankton. A particle detecting system for an optical plankton counter (OPC) was designed and built with a red LED as a light source based on the optical characteristics...
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