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In this a paper, we propose a simplistic channel model for cascaded PLC-VLC system which highlights the noise scenario in such hybrid systems. The model utilises previously proposed channel transfer functions of both PLC and VLC channels and highlights the effects of the LED supply in the system. The noise scenario implemented on the model is based on the observations obtained from a practical measurement...
The impedance of a low voltage distribution network is analyzed and presented. Data collected from field measurement which was done over one week is used in this analysis. Basically, a chirp is injected into the electric grid, and the voltage and current signals (corrupted by various noises, including the 50 Hz mains signal) are time-sampled and stored for processing. The voltage and current are processed...
The use of an error-correcting code is essential in communication systems where the channel is noisy. We present a new technique to reconstruct RM (Reed-Muller) codes from a noisy intercepted bit stream. RM codes have several decoding methods, including a method that uses the FHT (Fast Hadamard Transform). The FHT algorithm is composed of several butterfly operations. To verify whether or not a received...
This demonstration presents Apollo, a new sensor information processing tool for uncovering likely facts in noisy participatory sensing data. Participatory sensing, where users proactively document and share their observations, has received significant attention in recent years as a paradigm for crowd-sourcing observation tasks. However, it poses interesting challenges in assessing confidence in the...
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