Descripción del proyecto
This proposal contributes to sustainable Internet of Things (IoT) technologies and future mobile communications with promising societal benefits. The aim is to integrate energy- and spectrum-efficiency scattering-based communication (SC) technologies into the next-generation communications operating in the millimetre wave (mmWave) band. The objectives will gain better environmental awareness via enhancing the SC system performance and assisting mmWave directional transmission by attaching backscatter devices (BD) to the user equipment to be served. The latter is a highly innovative scheme because, unlike available solutions that depend on antenna hardware, it utilizes the malleability of BD modulations to facilitate the estimation of directions. This scheme will improve the implementational degree of freedom, and potentially shorten the training period compared to the techniques that do not consider BDs. The core idea of addressing the problems is to examine the wireless channel altered by the BD modulation. I consider that a BD applies frequency modulation to create an artificial Doppler shift to the signal. This leads us to investigate the delay-Doppler profile of the received signal which provides information on the BD location and hence, estimates the channel altered by the BD. Moreover, applying frequency modulation with different frequency shifts on different BDs will help identify multiple BDs. The proposal will approach the problem at a fundamental and applied level, touching multidisciplinary knowledge including system and communication engineering, especially high-frequency and mobile technology, applied mathematics, and signal processing. There will be continuous knowledge transfer among the host, the supervisor, the collaborators, and the researcher. The research training will be complemented by a set of transferable skills including Self- and Team-Leadership, Pedagogy, and Communication, which will make the researcher more employable across sectors.