About

I am a Brazilian master’s student in Electronic and Information Engineering at Tsinghua University, supported by a full Chinese Government Scholarship.

I want to use technology to make people’s lives easier, and I see sensing as a great opportunity to do that. I am interested in how different kinds of sensors capture the world, what each one can and cannot see, and how each of them perceives people and the environment in its own way. My current research is on multimodal wireless sensing, using everyday signals such as Wi-Fi channel state information (CSI) and visible light to recognize human activity and detect falls indoors, without cameras or wearables. I built a synchronized visible-light + Wi-Fi testbed and study when the two modalities complement each other, together with a Bayesian fusion that stays robust when one of them is degraded.

Although my background is in computer science, I have always been drawn to the physical side of systems: building setups, running experiments and understanding how hardware actually behaves. Before graduate school, I spent five years at Stone (NASDAQ: STNE), where I led the integration of Android payment hardware, bringing nine point-of-sale devices into production and working closely with manufacturers such as Ingenico, Sunmi and Positivo on embedded and IoT integration. I hold a B.Sc. in Computer Science from Universidade Federal Fluminense, Brazil.

Interests
  • Sensing
  • Multimodal Sensing
  • Bayesian Machine Learning
  • Signal Processing

Publications

  1. ICASSP 2027 WASAIUnder review

    Light Helps Wi-Fi: Fusing Visible Light and Wi-Fi Sensing Activity and Fall Recognition

    D. Mousinho, J. Li, G. Li, W. Ding, F. N. Khan, E. E. Kuruoğlu

    IEEE ICASSP 2027 Workshop on Wireless AI Sensing (WASAI)

    A synchronized visible-light + Wi-Fi sensing testbed, a 12-participant dataset including falls, an information-theoretic model of light/Wi-Fi complementarity, and a Bayesian decision-level fusion that stays robust when one modality is degraded.

  2. IHC 2024

    How Can We Help Visually Impaired People Feel Safe During Payments in the Physical World

    D. Mousinho, J. Beltrão, D. Trevisan, V. Romero

    Extended Proceedings of the XXIII Brazilian Symposium on Human Factors in Computational Systems (IHC 2024), Brasília, pages 86 to 90

    Original title in Portuguese: "Como podemos ajudar pessoas com deficiência visual a se sentirem seguras durante pagamentos no mundo físico"

    ★ Top scores for presentation and communication, Posters & Demos track

Projects

Since 2026 · Tsinghua University · Master's thesis

Visible Light + Wi-Fi Sensing

Synchronized testbed with a modulated LED and four photodiodes sampled at 200 kHz on an FPGA, plus an ESP32-C5 802.11ax link reporting CSI on 245 subcarriers. Dataset of 12 participants, 7 activities including falls, 3 room conditions (252 recordings, 5,688 windows).

  • Wi-Fi CSI
  • Visible light
  • FPGA
  • Bayesian fusion

2024 · MidiaCom Lab, UFF

HeartBeat: Heart Rate from Wi-Fi

Raspberry Pi system that captures Wi-Fi frames and estimates heart rate from CSI in real time using band-pass filtering, outlier removal, moving averages and Fourier analysis. Live demo at the VIII MidiaCom Laboratory Workshop.

  • Wi-Fi CSI
  • Vital signs
  • Raspberry Pi

Research Experience

  • Since 2026

    Graduate Researcher

    Time-Varying Data Science Group, Tsinghua University

    • Built a visible-light + Wi-Fi sensing testbed and a 12-participant activity/fall dataset
    • Bayesian decision-level fusion robust to a degraded modality; first author of the ICASSP 2027 workshop submission
  • 2025

    Research Volunteer

    Institute of Future Human Habitat, Tsinghua University

    • Built a parametric digital twin of a tower in Rhino/Grasshopper
  • 2024 to 2025

    Undergraduate Researcher

    MidiaCom Lab, Universidade Federal Fluminense

    • Real-time heart-rate estimation from Wi-Fi CSI on a Raspberry Pi (“HeartBeat” demo)

Teaching

  • Since 2026

    Teaching Assistant, Communication Strategy

    Tsinghua University

    • Course materials, scheduling, assignments and grading (Spring and Fall 2026)

Industry Experience

  • 2020 to 2025

    Senior Product Manager

    Stone (NASDAQ: STNE), Brazil

    • Product Analyst (2021 to 2022) · Product Intern (2020 to 2021)
    • Led the Ton Android (T3 Smart) POS, scaling from under 10,000 users to Stone’s 3.9M+ customer base
    • Integrated 9 Android hardware devices with manufacturers incl. Ingenico, Sunmi (Xiaomi), Tectoy and Positivo
    • Championed accessibility features for visually impaired users, leading to the IHC 2024 publication

Education

  • 2025 to 2027

    Master of Engineering, Electronic and Information Engineering (AI and Innovative Design)

    Tsinghua University

    • GPA 3.9/4.0 · Chinese Government Scholarship (CSC), full scholarship
    • Thesis: Multimodal Visible Light and Wi-Fi Sensing for Robust Indoor Human Activity Recognition (proposal defended June 2026)
    • Advisor: Prof. Ercan Engin Kuruoğlu · Co-advisor: Prof. Faisal Nadeem Khan
    • Student ambassador representing Brazil
  • 2019 to 2024

    B.Sc., Computer Science

    Universidade Federal Fluminense (UFF), Brazil

    • Undergraduate research on Wi-Fi CSI signal processing for vital-sign monitoring, advised by Prof. Celio Albuquerque
    • Invited with honors to continue to a Master’s degree based on research performance

Honors & Awards

  • 2025 to 2027Chinese Government Scholarship (CSC), Type B, full Master's scholarship
  • 2025Best Documentation and Tutorial Award, Capstone AI course, Tsinghua University
  • 2025Best Project Award, Product Design and Innovation course, Tsinghua University
  • 2024Top scores for presentation and communication, IHC 2024 Posters & Demos
  • 2024Invited with honors to a Master's program, Universidade Federal Fluminense

Skills

Programming & ML
Python, PyTorch, TensorFlow, scikit-learn, SQL, Git, Linux, LLM applications and agents
Signal processing & hardware
Wi-Fi CSI (ESP32), photodiode / VLC sensing, FPGA data acquisition, Raspberry Pi, spectral analysis, filtering

A Little Bit More About Me

I’m Brazilian, from Rio de Janeiro, and like a good Brazilian I love football and a proper barbecue (churrasco). Away from the lab I enjoy playing badminton, and I love cooking and trying different dishes.
Languages
  • PortugueseNative
  • EnglishFluent
  • SpanishIntermediate
  • VietnameseIntermediate
  • ChineseHSK 3