Khac-Hoang NgoNgô Khắc Hoàng

How do connected systems share information, learn, and make decisions?

I study scalable and secure distributed inference: how connected systems communicate the information needed to learn, predict, and make decisions. My research combines wireless communications, information theory, and machine learning.

01 / Communication & distributed inference

What should a network deliver: every message, or the information we need?

I study how many devices can share information efficiently, even with limited coordination, energy, and knowledge of the wireless channel.

My work on unsourced multiple access considers communication from many intermittently active devices. Type-based approaches focus on the information reported collectively by those devices. I also study MIMO, noncoherent communication, and information freshness. My upcoming CESP project studies communication-efficient synchronization of predictions for distributed intelligent systems, connecting communication design with distributed inference.

02 / Task-oriented sensing & transmission

Which parts of a 3D scene are worth transmitting?

I explore point-cloud transmission for remote registration: communicating with a downstream task in mind, rather than treating every bit as equally important.

The WASP-funded project Point-Cloud Transmission for Remote Registration connects communication design with 3D perception. Our work includes registration-error estimation and patch-based point cloud transmission with rate adaptation, bringing the communication budget and sensing data delivery into the same design problem.

03 / AI privacy & security

What can a learning system reveal, and what can it be made to remember?

I investigate privacy risks in learning systems and the foundations of attacks and defenses, including membership inference and memory poisoning in AI agents.

Work on membership inference and federated learning examines the limits of privacy protection. A Swedish Research Council project, Memory Poisoning in LLM Agents: Foundations, Attacks, and Defenses, extends this research to the memories used by AI agents.

Current and upcoming projects

Other current projects
  • Theory for the Privacy-Security Trade-off in Practical Federated Learning

    My role: Co-principal investigator (co-PI)

    Swedish Research Council · 2025–2029

  • Theory for the Privacy-Security Trade-off in Federated Learning

    My role: Co-principal investigator (co-PI)

    WASP · 2023–2027

Completed projects

LANTERN project logo

Marie Skłodowska-Curie Individual Fellowship · 2021–2023

LANTERN

My role: Marie Skłodowska-Curie Fellow

Low-latency and private edge computing in random-access networks.

Project website ↗
Other completed projects
  • Agricultural Internet of Things Based on Edge Computing

    My role: Co-principal investigator (co-PI)

    ASEAN IVO / Japan’s NICT · 2022–2024

  • Connecting the Unconnected: A Tool for Digital Inclusion

    My role: Co-principal investigator (co-PI)

    AlumNode Funding, Klaus Tschira Foundation · 2021–2022

See the complete publication list for all papers, books, patents, posters, and reports.

Selected invited talks

Communicating what is needed, and just that — ELLIIT 2026 ↗

Invited Conference Talks
  • Communicating what is needed, and just that

    Massive, secure, and intelligent connectivity for distributed inference. Watch the recorded presentation.

    ELLIIT Annual Workshop, Lund University · October 2026 · 15 minutes

  • Unsourced multiple access: from support recovery to type estimation

    Swedish Communication Technologies Workshop · October 2025 · 1.5 hours

  • Unsourced multiple access with common alarm messages

    Zugspitze Workshop on Communications · January 2023 · 45 minutes

  • Noncoherent wireless communications: fundamental limits and system design

    GRETSI, France · September 2022 · 15 minutes

  • Unsourced multiple access for the internet of things

    H2020 INCOMING Summer School · June 2022 · 1.5 hours

Invited Seminars and Colloquia
  • Massive Random Access

    VinUniversity (July 2026); Universitat Politècnica de Catalunya (June 2026); University of Cyprus (October 2025); Aalborg University (April 2024); Linköping University (October 2023); Vietnam National University Hanoi (May 2023, May 2021); INRIA Lyon (April 2023); CentraleSupélec (January 2023); ETIS, France (February 2022).

  • Age of Information

    AVISE (November 2024); University of Amsterdam (April 2024); Hanoi University of Science and Technology (December 2023); German Aerospace Center, DLR (September 2022).

  • Noncoherent Wireless Communications

    CentraleSupélec (December 2021, June 2018); Club EEA, France (June 2021); Vietnam National University Hanoi (August 2019, November 2017); Technical University of Munich (September 2017).

  • Coded Caching

    Vietnam National University Hanoi (August 2016).

A connection worth exploring?

Let’s discuss it ↗