Publication record.

M. Lassila, J. Östman, K.-H. Ngo, and A. Graell i Amat, “Hierarchical Bayesian Membership Inference: A General Framework with Applications to Diffusion Models,” Submitted to Proc. Int. Conf. Learn. Represent. (ICLR), 2027.

J. Östman, M. Lassila, K.-H. Ngo, and A. Graell i Amat, “Predictive Geometry in Language Models,” Submitted to Proc. Int. Conf. Learn. Represent. (ICLR), 2027.

S. Liu, G. Bazard, K.-H. Ngo, and P.-E. Forssén, “Point Cloud Transmission With Patch-Based Rate Adaptation,” Submitted to Proc. IEEE Int. Conf. Commun. (ICC), Washington, DC, USA, 2027.

A. Lancho, K.-H. Ngo, S. Rini, R. Oliver, and R. Vazquez-Alvarez, “Charting the Path to Bifröst: The 2026 ESIT Data-to-Information Competition on Robust CSI-Based Localization and Machine Unlearning,” Submitted to IEEE BITS Inf. Theory Mag., 2026.

N. L. Trung, V. N. Q. Bao, N. V. Ha, L. V. Ha, K.-H. Ngo, et al., “Two-way relay communications: theory and implementation,” Vietnam National University Publishing House, Hanoi, Vietnam, 2025, Language: Vietnamese.

K.-H. Ngo, A. Decurninge, M. Guillaud, and S. Yang, “Transmitter and Receiver Communication Apparatus for Non-Coherent Communication,” U.S. Patent 17/243,679, 2021-08-19.

J.-F. Chamberland, K. Narayanan, K.-H. Ngo, G. Durisi, V. T. Kunde, and C. S. K. Valmeekam, “Prediction-Based Compression Using Large Language Models,” IEEE BITS Inf. Theory Mag., Aug. 2026, Early Access.

K. Okumus, K.-H. Ngo, G. Durisi, and E. G. Ström, “Type-based unsourced multiple access over fading channels in distributed MIMO with application to multi-target localization,” IEEE Trans. Wireless Commun., pp. 22339–22353, 2026.

K.-H. Ngo and E. G. Larsson, “Distributed MIMO With Over-the-Air Phase Calibration Integrated Into the TDD Flow,” IEEE Trans. Wireless Commun., vol. 25, pp. 17463–17478, 2026.

K.-H. Ngo, D. Cuevas, R. de Miguel Gil, V. Monzon Baeza, A. Garcia Armada, and I. Santamaria, “Noncoherent MIMO Communications: Theoretical Foundation, Design Approaches, and Future Challenges,” IEEE Open J. Veh. Technol., pp. 381–401, 2026.

K.-H. Ngo, G. Durisi, A. Munari, F. Lázaro, and A. Graell i Amat, “Timely Status Updates in Slotted ALOHA Networks With Energy Harvesting,” IEEE Trans. Commun., vol. 73, no. 9, pp. 7288–7303, Sep. 2025.

K.-H. Ngo, G. Durisi, A. Graell i Amat, P. Popovski, A. E. Kalor, and B. Soret, “Unsourced Multiple Access with Common Alarm Messages: Network Slicing for Massive and Critical IoT,” IEEE Trans. Commun., vol. 72, no. 2, pp. 907–923, Feb. 2024.

K.-H. Ngo, A. Lancho, G. Durisi, and A. Graell i Amat, “Unsourced Multiple Access with Random User Activity,” IEEE Trans. Inf. Theory, vol. 69, no. 7, pp. 4537–4558, Feb. 2023.

F. Zhang, K.-H. Ngo, S. Yang, and A. Nosratinia, “Transmit Correlation Diversity: Generalization, New Techniques, and Improved Bounds,” IEEE Trans. Inf. Theory, vol. 68, no. 6, pp. 3841–3869, Jan. 2022, (Zhang and Ngo contributed equally to the technical content).

K.-H. Ngo, S. Yang, M. Guillaud, and A. Decurninge, “Joint Constellation Design for Noncoherent MIMO Multiple-Access Channels,” IEEE Trans. Inf. Theory, vol. 68, no. 11, pp. 7281–7305, Jul. 2022.

G. Gur, A. Kalla, C. de Alwis, Q.-V. Pham, K.-H. Ngo, M. Liyanage, and P. Porambage, “Integration of ICN and MEC in 5G and Beyond Networks: Mutual Benefits, Use Cases, Challenges, Standardization, and Future Research,” IEEE Open J. Commun. Soc., vol. 3, pp. 1382–1412, Aug. 2022.

A. U. Rahman, F. Fourati, K.-H. Ngo, A. Jindal, and M.-S. Alouini, “Network Graph Generation through Adaptive Clustering and Infection Dynamics: A Step Towards Global Connectivity,” IEEE Commun. Lett., vol. 26, no. 4, pp. 783–787, Jan. 2022.

T.-T.-Q. Tran, L. V. Nguyen, K.-H. Ngo, L.-T. Nguyen, Q.-T. Nguyen, N.-Q.-B. Vo, X.-N. Tran, E. Bastug, S. Azarian, M. Debbah, and P. Duhamel, “Network Coding with Multimedia Transmission and Cognitive Networking: An Implementation based on Software-Defined Radio,” REV Journal on Electronics and Communications, vol. 10, no. 3-4, pp. 72–84, 2020, Invited Article.

K.-H. Ngo, A. Decurninge, M. Guillaud, and S. Yang, “Cube-Split: A Structured Grassmannian Constellation for Non-Coherent SIMO Communications,” IEEE Trans. Wireless Commun., vol. 19, no. 3, pp. 1948–1964, Mar. 2020.

K.-H. Ngo, M. Guillaud, A. Decurninge, S. Yang, and P. Schniter, “Multi-User Detection Based on Expectation Propagation for the Non-Coherent SIMO Multiple Access Channel,” IEEE Trans. Wireless Commun., vol. 19, no. 9, pp. 6145–6161, Sep. 2020.

K.-H. Ngo, S. Yang, and M. Kobayashi, “Scalable Content Delivery With Coded Caching in Multi-Antenna Fading Channels,” IEEE Trans. Wireless Commun., vol. 17, no. 1, pp. 548–562, Jan. 2018.

K. Okumus, K.-H. Ngo, U. K. Ganesan, G. Durisi, E. G. Ström, and S. R. Pandey, “Type-Based Unsourced Federated Learning With Client Self-Selection,” Proc. IEEE Int. Conf. Commun. (ICC), Glasgow, Scotland, UK, 2026.

S. Liu, Z. Xiong, K.-H. Ngo, and P.-E. Forssén, “MATTER: Multiscale Attention for Registration Error Regression,” Proc. IEEE Int. Conf. Acoust. Speech Signal Process. (ICASSP), Barcelona, Spain, 2026.

D. P. Krishnan, K. Okumus, K.-H. Ngo, and G. Durisi, “Minimum Energy per Bit of Unsourced Multiple Access with Location-Based Codebook Partitioning,” Proc. IEEE Int. Symp. Inf. Theory (ISIT), Guangzhou, China, 2026.

N.-S. Duong, K.-H. Ngo, T.-M. Dinh-Thi, and V.-L. Nguyen, “Sparse Orthogonal Matching Pursuit-based Parameter Estimation for Integrated Sensing and Communications,” IEEE INFOCOM Workshop, London, UK, 2025.

K.-H. Ngo, G. Durisi, and P. Popovski, “Information Age and Correctness for Energy Harvesting Devices with Random Access,” Proc. IEEE Global Commun. Conf. (GLOBECOM), pp. 5411–5416, Taipei, Taiwan, 2025.

K.-H. Ngo and E. G. Larsson, “Breaking the TDD Flow for Over-the-Air Phase Synchronization in Distributed Antenna Systems,” Proc. IEEE Global Commun. Conf. (GLOBECOM), pp. 1645–1650, Taipei, Taiwan, 2025.

D. P. Krishnan, K. Okumus, K.-H. Ngo, and G. Durisi, “An Achievability Bound for Type-Based Unsourced Multiple Access,” Proc. IEEE Int. Symp. Inf. Theory (ISIT), pp. 1751–1756, Ann Arbor, MI, USA, 2025.

K. Okumus, K.-H. Ngo, G. Durisi, and E. G. Ström, “Type-Based Unsourced Multiple Access over Fading Channels with Cell-Free Massive MIMO,” Proc. IEEE Int. Symp. Inf. Theory (ISIT), pp. 1518–1523, Ann Arbor, MI, USA, 2025.

K.-H. Ngo, D. N. Nguyen, and T.-M. D. Thi, “Protocol Design for Irregular Repetition Slotted ALOHA With Energy Harvesting to Maintain Information Freshness,” Proc. IEEE Wireless Commun. Netw. Conf. (WCNC), Milan, Italy, 2025.

M. Lassila, J. Östman, K.-H. Ngo, and A. Graell i Amat, “Practical Bayes-Optimal Membership Inference Attacks,” Proc. Conf. Neural Inf. Process. Syst. (NeurIPS), pp. 38522–38556, San Diego, CA, USA, 2025.

K.-H. Ngo, D. P. Krishnan, K. Okumus, G. Durisi, and E. G. Ström, “Type-Based Unsourced Multiple Access,” Proc. IEEE Int. Workshop Signal Process. Adv. Wireless Commun. (SPAWC), pp. 911–915, Lucca, Italy, 2024.

K.-H. Ngo, J. Östman, and A. Graell i Amat, “Local Mutual-Information Differential Privacy,” Proc. IEEE Inf. Theory Workshop (ITW), pp. 31–36, Shenzhen, China, 2024.

K.-H. Ngo, J. Östman, G. Durisi, and A. Graell i Amat, “Secure Aggregation is NOT Private Against Membership Inference Attacks,” Proc. Eur. Conf. Mach. Learn. Princ. Pract. Knowl. Discov. Databases (ECML PKDD), pp. 180–198, Vilnius, Lithuania, Sep. 2024.

N.-S. Duong, Q.-T. Nguyen, K.-H. Ngo, and T.-M. Dinh-Thi, “Sparse Bayesian Learning with Atom Refinement for mmWave MIMO Channel Estimation,” Proc. IEEE Stat. Signal Process. Workshop (SSP), pp. 155–159, Hanoi, Vietnam, Jul. 2023.

K.-H. Ngo, A. Graell i Amat, and G. Durisi, “Irregular Repetition Slotted ALOHA Over the Binary Adder Channel,” Proc. IEEE Int. Conf. Commun. (ICC), pp. 5346–5351, Rome, Italy, May 2023.

K.-H. Ngo, G. Durisi, A. Graell i Amat, A. Munari, and F. Lázaro, “Age of Information in Slotted ALOHA With Energy Harvesting,” Proc. IEEE Global Commun. Conf. (GLOBECOM), pp. 3579–3584, Kuala Lumpur, Malaysia, Dec. 2023.

N. T. Nguyen, N. Shlezinger, K.-H. Ngo, V.-D. Nguyen, and M. Juntti, “Joint Communications and Sensing Design for Multi-Carrier MIMO Systems,” Proc. IEEE Stat. Signal Process. Workshop (SSP), pp. 110–114, Hanoi, Vietnam, Jul. 2023, Best Paper Award.

K.-H. Ngo, G. Durisi, A. Graell i Amat, P. Popovski, B. Soret, and A. E. Kalør, “Unsourced Multiple Access for Heterogeneous Traffic Requirements,” Proc. Asilomar Conf. Signals Syst. Comput., pp. 687–691, CA, USA, Oct. 2022, Invited Paper.

K.-H. Ngo, S. Yang, and M. Guillaud, “The Optimal DoF for the Noncoherent MIMO Channel with Generic Block Fading,” Proc. IEEE Inf. Theory Workshop (ITW), Riva del Garda, Italy, Apr. 2021.

K.-H. Ngo, S. Yang, M. Guillaud, and A. Decurninge, “Noncoherent MIMO Multiple-Access Channels: A Joint Constellation Design,” Proc. IEEE Inf. Theory Workshop (ITW), Riva del Garda, Italy, Apr. 2021.

K.-H. Ngo and S. Yang, “A Generalized Gaussian Model for Wireless Communications,” Proc. IEEE Int. Symp. Inf. Theory (ISIT), pp. 3237–3242, Melbourne, Victoria, Australia, 2021.

K.-H. Ngo, A. Lancho, G. Durisi, and A. Graell i Amat, “Massive Uncoordinated Access with Random User Activity,” Proc. IEEE Int. Symp. Inf. Theory (ISIT), pp. 3014–3019, Melbourne, Victoria, Australia, 2021.

K.-H. Ngo, F. Zhang, S. Yang, and A. Nosratinia, “Two-User MIMO Broadcast Channel With Transmit Correlation Diversity: Achievable Rate Regions,” Proc. IEEE Inf. Theory Workshop (ITW), Kanazawa, Japan, Nov. 2021.

K.-H. Ngo and S. Yang, “A Riemannian Metric for Non-Coherent Constellation Design and Its Application to Multiple Access Channel,” Proc. Int. ITG Workshop Smart Antennas (WSA), French Riviera, France, Nov. 2021.

K.-H. Ngo, N. T. Nguyen, T. Q. Dinh, T.-M. Hoang, and M. Juntti, “Low-Latency and Secure Computation Offloading Assisted by Hybrid Relay-Reflecting Intelligent Surface,” Proc. Int. Conf. Adv. Technol. Commun. (ATC), pp. 306–311, Hanoi, Vietnam, Oct. 2021, Best Paper Award.

K.-H. Ngo, G. Durisi, and A. Graell i Amat, “Age of Information in Prioritized Random Access,” Proc. Asilomar Conf. Signals Syst. Comput., pp. 1502–1506, CA, USA, Oct. 2021, Invited Paper.

K.-H. Ngo, M. Guillaud, A. Decurninge, S. Yang, S. Sarkar, and P. Schniter, “Non-Coherent Multi-User Detection Based on Expectation Propagation,” Proc. Asilomar Conf. Signals Syst. Comput., pp. 2092–2096, CA, USA, Nov. 2019.

K.-H. Ngo, A. Decurninge, M. Guillaud, and S. Yang, “A Multiple Access Scheme for Non-Coherent SIMO Communications,” Proc. Asilomar Conf. Signals Syst. Comput., pp. 1846–1850, CA, USA, Oct. 2018.

K.-H. Ngo, S. Yang, and M. Guillaud, “The Optimal DoF Region for the Two-User Non-Coherent SIMO Multiple-Access Channel,” Proc. IEEE Inf. Theory Workshop (ITW), Guangzhou, China, Nov. 2018.

A. Ghorbel, K.-H. Ngo, R. Combes, M. Kobayashi, and S. Yang, “Opportunistic Content Delivery in Fading Broadcast Channels,” Proc. IEEE Global Commun. Conf. (GLOBECOM), Singapore, Dec. 2017.

K.-H. Ngo, S. Yang, and M. Guillaud, “An achievable DoF region for the two-user non-coherent MIMO broadcast channel with statistical CSI,” Proc. IEEE Inf. Theory Workshop (ITW), pp. 604–608, Taiwan, Nov. 2017.

K.-H. Ngo, A. Decurninge, M. Guillaud, and S. Yang, “Design and analysis of a practical codebook for non-coherent communications,” Proc. Asilomar Conf. Signals Syst. Comput., pp. 1237–1241, CA, USA, Oct. 2017.

S. Yang, K.-H. Ngo, and M. Kobayashi, “Content delivery with coded caching and massive MIMO in 5G,” Proc. Int. Symp. Turbo Codes Iterative Inf. Process. (ISTC), pp. 370–374, Brest, France, Sep. 2016.

K.-H. Ngo, S. Yang, and M. Kobayashi, “Cache-aided content delivery in MIMO channels,” Proc. Annu. Allerton Conf. Commun. Control Comput., pp. 93–100, IL, USA, Sep. 2016.

K.-H. Ngo, S. Yang, M. Kobayashi, and K. Huang, “On the complementary roles of massive MIMO and coded caching for content delivery,” Proc. Int. Conf. Adv. Technol. Commun. (ATC), pp. 237–242, Hanoi, Vietnam, Oct. 2016.

K.-H. Ngo and Quoc-Tuan Nguyen, “Implementation of Network Coding Scheme in Universal Software Radio Peripheral,” Proc. IEICE Int. Conf. Integr. Circuits Design Verification (ICDV), Hanoi, Vietnam, Nov. 2014.

Thai-Mai Dinh Thi, Quoc-Tuan Nguyen, and K.-H. Ngo, “Implementation of Spectrum Sensing Scheme in Software-Defined Radio Testbed,” Proc. IEICE Int. Conf. Integr. Circuits Design Verification (ICDV), Hanoi, Vietnam, Nov. 2014.

F. Fourati, A. U. Rahman, K.-H. Ngo, E. J. Oughton, A. Jindal, and M.-S. Alouini, “Optimal Network Deployment for Global Connectivity,” Eur. Conf. Netw. Commun. and 6G Summit (EuCNC/6G Summit), Grenoble, France, Jun. 2022.

K.-H. Ngo, “Massive Uncoordinated Access for the Internet of Things: A Novel Information Theoretic Framework,” 9th Heidelberg Laureate Forum (HLF), Heidelberg, Germany, Sep. 2022.

K.-H. Ngo, “Age of Information in Prioritized Random-Access,” IEEE SPS - EURASIP Summer School on “Defining 6G: Theory, Applications, and Enabling Technologies”, Linköping, Sweden, Aug. 2022.

K.-H. Ngo, S. Yang, and M. Guillaud, “Generalized Gaussian Model for Data-Driven Learning in Communications,” Int. Zurich Seminar Inf. Commun. (IZS), Zurich, Switzerland, Feb. 2020.

T. T. Q. Tran, V.-L. Nguyen, K.-H. Ngo, L.-T. Nguyen, Q.-T. Nguyen, E. Bastug, S. Azarian, M. Debbah, and P. Duhamel, “Network Coding and Information Security in Industry 4.0,” 1st ASEAN IVO Workshop on Cybersecurity and Information Security in Industry 4.0, Hanoi, Vietnam, Mar. 2019.

K.-H. Ngo, “Solar panel charge controller,” Dept. of Electrical and Computer Engineering, National University of Singapore, Singapore, Aug. 2012.