Monopulse-based THz Beam Tracking for Indoor Virtual Reality Applications

Konferenz: Mobilkommunikation – Technologien und Anwendungen - 24. ITG-Fachtagung
15.05.2019 - 16.05.2019 in Osnabrück, Deutschland

Tagungsband: ITG-Fb. 288: Mobilkommunikation

Seiten: 4Sprache: EnglischTyp: PDF

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Tiwari, Krishan Kumar; Sark, Vladica (IHP - Leibniz-Institut für innovative Mikroelektronik, 15236 Frankfurt (Oder), Germany)
Grass, Eckhard (IHP - Leibniz-Institut für innovative Mikroelektronik, 15236 Frankfurt (Oder), Germany & Humboldt-Universität zu Berlin, 10099, Berlin, Germany)
Kraemer, Rolf (IHP - Leibniz-Institut für innovative Mikroelektronik, 15236 Frankfurt (Oder), Germany & Brandenburg University of Technology Cottbus-Senftenberg, 03046 Cottbus, Germany)

Terahertz spectrum is being researched upon to provide ultra-high throughput radio links for indoor applications e.g. virtual reality (VR), etc. as well as outdoor applications e.g. backhaul links, etc. This paper investigates a monopulse-based beam tracking approach for limited mobility users relying on sparse massive multiple input multiple output (MIMO) wireless channels. Owing to the sparsity, beamforming is realized using digitally-controlled radio frequency (RF) / inter-mediate-frequency (IF) phase shifters with constant amplitude constraint for transmit power compliance. A monopulse-based beam tracking technique, using received signal strength indication (RSSI) is adopted to avoid feedback overheads for obvious reasons of efficacy and resource savings. The Matlab implementation of the beam tracking algorithm is also reported. This Matlab implementation has been kept as general purpose as possible using functions wherein the channel, beamforming codebooks, monopulse comparator, etc. can easily be updated for specific requirements and with minimum code amendments.