Rodrigues, LuísFigueiredo, MónicaAlves, Luís Nero2025-09-052025-09-052020-07L. Rodrigues, M. Figueiredo and L. N. Alves, "Analog m-CAP demodulation for VLC-based IoT systems," 2020 12th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP), Porto, Portugal, 2020, pp. 1-6, doi: https://doi.org/10.1109/CSNDSP49049.2020.9249493.978-1-7281-6051-1978-1-7281-6743-5http://hdl.handle.net/10400.8/14005EISBN - 978-1-7281-6743-5Future IoT systems will require progressively smaller sizes, cost, complexity and power consumption. This paper proposes a new architecture using a hybrid m-CAP/QAM system with the goal to provide such features to future VLC based IoT devices. The proposed system architecture uses a ceiling LED light fixture implementing an m-CAP digital modulator, connected to several IoT devices, implemented by analog demodulators. The simulated performance presents an increase on BER when compared to a digital m-CAP receiver, between 1 and 2 dB. Nevertheless, considering IoT scenarios, having low cost/size/power devices can surpass the performance penalty.engVisible Light Communicationsm-CAPIoTconference paper10.1109/csndsp49049.2020.9249493