13 May 2016 Optical signal processing for indoor positioning using a-SiCH technology
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In this paper, we use the nonlinear property of SiC multilayer devices under UV irradiation to design an optical processor for indoor positioning. The transducer combines the simultaneous demultiplexing operation with the photodetection and self-amplification. The proposed coding is based on SiC technology. Based on that, we present a way to achieve indoor localization using the parity bits and a navigation syndrome. A representation with a 4 bit original string colour message and the transmitted 7 bit string, the encoding and decoding accurate positional information processes and the design of SiC navigation syndrome generators are discussed and tested. A visible multilateration method estimates the position of the device by using the decoded information received from several, non-collinear transmitters. The location and motion information is found by mapping position and estimates the location areas. Since the indoor position of the LED light source is known from building floor plans and lighting plans, the corresponding indoor position and travel direction of a mobile device can be determined.
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M. A. Vieira, M. A. Vieira, M. Vieira, M. Vieira, P. Louro, P. Louro, V. Silva, V. Silva, "Optical signal processing for indoor positioning using a-SiCH technology", Proc. SPIE 9891, Silicon Photonics and Photonic Integrated Circuits V, 98911Z (13 May 2016); doi: 10.1117/12.2227144; https://doi.org/10.1117/12.2227144

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