Indoor positioning PLC systems
Mentor: Fernando Cruz Roldán
Phone: (+34) 918856593
University: Universidad de Alcalá
Partner Host Institution: OptivaMedia
Keywords: OFDM, Wavelet OFDM, Power Line Communications, Indoor positioning Systems, Localization

Indoor positioning PLC systems

Power line communication (PLC) systems are becoming a mature field with an increasing scientific and industrial interest. PLC provides broadband connection by using the existing mains, easing the connection of different devices. The medium access techniques recommended in the standards of PLC are OFDM, with and without a window in the transmitter, and Wavelet OFDM, based on a cosine modulated filter bank.

Indoor positioning systems (IPS) provide a position fix for devices inside different buildings. Their use and applications have increasing scopes ranging from context data assisting/forwarding in museums, object tracking, marketing, etc. A common approach for IPS, is to deploy radio-frequency beacons inside the building and have a tag that collects the signals from those beacons to obtain the position fix.

Although the PLC signal that travels on the cooper cables is of low power and does not irradiate strongly, some trace of it is still available in the air. Therefore, our working proposal is to investigate how and at which extent PLC signal could be used for indoor positioning. As a first goal, one will investigate the attainable accuracy of using PLC signals for IPS. Secondly, we will propose how to employ the PLC standard framing structure for positioning purposes. This will encompass both using devices that upconvert and transmit the PLC signal so that the positioning data that should be conveyed by the beacon signal comes directly from the PLC system. Thirdly, one will investigate the feasibility of doing the localization disregarding the mentioned device.

For achieving the above goals, specific communication channel models, machine learning, pattern recognition and signal processing techniques are necessary. Therefore, investigation effort is necessary to understand, propose and develop the relevant methods, algorithms and techniques that may impulse the envisioned scenario.

Departament: Signal Theory and Communications
Research Group: Communications, Multirate Systems, and Biomedical Engineering
More Information:
Relevants projects on the area: Project title: Reliable physical layer technologies for communications over electrical networks. Financing entity: Ministry of Economy and Competitiveness (TEC2015-64835-C3-1-R). Participating entities: U. de Alcalá (Department of Signal Theory and Communications (C3-1) and Electronics Department (C03-02)) and U. Politécnica de Madrid (C3-3). Duration, from: 01/01/2016 to: 05/31/2019 Principal investigators: Dr. D. Fernando Cruz Roldán and Dr. D. Manuel Blanco Velasco (Coordinators of the entire project) Number of participating researchers: 7 TOTAL PRICE OF THE PROJECT: € 94,743 (Subproject 1)
Relevants publications on the area: 1.- F. Cruz-Roldán, F. A. Pinto-Benel, José D. Osés del Campo, M. Blanco Velasco, “A Wavelet OFDM receiver for baseband power line communications,” Journal of the Franklin Institute, vol. 353, no. 7, pp. 1654-1671, May 2016, doi 10.1016/j.jfranklin.2016.02.015.
2.- F. A. Pinto-Benel, M. Blanco Velasco, F. Cruz-Roldán, “Throughput Analysis of Wavelet OFDM in Broadband Power Line Communications,” IEEE Access, 2018, doi 10.1109/ACCESS.2018.2796618.