Passive Localization of Robots with Ambient Light

A lot of research is been being done on Visible Light Communication (VLC), which has shown to be of interest for many applications, such as localization. Since localization based on VLC requires active modulation of light sources, this limits the amount of light sources that can be used for localization. Furthermore, in some situations there...

Digital Control of Multi-channel RF Energy Harvesters

This thesis tries to match the rectifier block of an RF energy harvester to a specific frequency. This specific frequency has the most power and is searched and selected by a smart algorithm. <br/>The algorithm tunes a varactor by applying a proper voltage to set it on different channels.<br/>Then the best channel is sampled and compared with...

Intermittent Kernel: A First Attempt

Energy harvesting and battery-free sensing devices show great promise for revolutionizing computing in every known area while expanding to non-conventional use-cases. The promise of cheap, dense, and ubiquitous sensing technology brings new applications for the Internet of Things. However, the future programming model is blurry and complex. With...

Phase Cancellation and Range Extension in Backscatter Networks

Progress has been made recently in the research of equal hierarchy backscatter communications. There are, however, challenges to overcome before this technology can become mainstream. For example, state-of-the-art solutions to the phase cancellation problem that occurs in such networks are still trivial and sub-optimal, especially in terms of...