Portrait of Guodong Sun

Guodong Sun

Wireless communications researcher · stochastic geometry & information theory

Based in Île-de-France · open to research and R&D roles

I build mathematical models of wireless networks and turn them into design decisions. My work combines stochastic geometry, finite-blocklength information theory and numerical simulation to analyze coverage, rate and reliability in next-generation systems.

I received my PhD in computer science from École Normale Supérieure, Paris, advised by François Baccelli at Inria Paris under a CIFRE contract with Nokia Networks France. From 2025 to 2026 I was a postdoctoral researcher at the Inria Centre at Université Côte d’Azur, working with Samir M. Perlaza on variable-length stop-feedback codes for short packets.

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At a glance

11peer-reviewed publications
7as first author
8invited talks
≈4 yrsR&D with Nokia (CIFRE and Bell Labs)
  • Stochastic geometry
  • Information theory
  • Finite-blocklength coding
  • VLSF codes
  • Reconfigurable intelligent surfaces
  • URLLC
  • Network performance analysis

Research

All research

PhD · 2021–2024

Stochastic geometry for RIS-assisted networks

Coverage and rate of RIS-assisted OFDM cellular networks with random base-station and surface deployments, and when RIS deployment pays off compared with network densification.

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Postdoc · 2025–2026

Short-packet codes with stop feedback

Variable-length stop-feedback (VLSF) codes: optimized sparse decoding times, reliability guarantees over noncoherent fading channels, and multiple access.

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Interactive labs

Two web apps for exploring my research in the browser. Each one runs the models live, with an AI assistant to guide you.

RIS Lab

ris.guodongsun.com

Reconfigurable intelligent surfaces in 5G and 6G: the physics, the 3GPP history, stochastic-geometry performance and techno-economics.

AI copilot that runs the models Open RIS Lab (opens in a new tab)

VLSF Lab

vlsf.guodongsun.com

Variable-length stop-feedback codes, visualized: random coding, information-density walks, the filtration and threshold stopping.

AI tutor that drives the simulations Open VLSF Lab (opens in a new tab)

News

Talks
  • Paper on SIC-based decoding for VLSF codes in hardcore-regulated multiple access at IEEE GLOBECOM 2026, Macau. Joint work with INSA Lyon.
  • Award Runner-up, Mario Gerla Best Paper Award at MAIN 2026, Palermo, for our paper on optimistic online caching.
  • Paper on VLSF decoding over correlated noncoherent fading channels at IEEE ISIT 2026, Guangzhou. Invited talk at EURECOM; mentor at IEEE VTC2026-Spring.
  • Paper on sparse VLSF codes at IEEE ICC 2026, Glasgow. Three-week research visit to IETR, INSA Rennes; talk at the 2nd France PhD Workshop on Information Theory.
  • Research visit to the CITI laboratory, INSA Lyon, and seminars at CITI and IETR.
  • Talk at the PEPR Future Networks annual event, Rennes.

Selected publications

All 11 publications
  1. IEEE TWC2026

    A Stochastic Geometry Framework for Performance Analysis of RIS-Assisted OFDM Cellular Networks

    G. Sun, F. Baccelli, K. Feng, L. U. Garcia, and S. Paris

    IEEE Transactions on Wireless Communications, vol. 25, pp. 5859–5875, 2026.

    arXivCode

  2. ISIT2026

    VLSF Decoding with Reliability Guarantees over Correlated Noncoherent Fading Channels

    G. Sun, S. M. Perlaza, P. Mary, and J.-M. Gorce

    Proc. IEEE International Symposium on Information Theory (ISIT), Guangzhou, China, 2026.

    arXiv

  3. ICC2026

    Optimization of Sparse VLSF Codes for Short-Packet Transmission via Saddlepoint Methods

    G. Sun, S. M. Perlaza, P. Mary, and J.-M. Gorce

    Proc. IEEE International Conference on Communications (ICC), Glasgow, UK, 2026.

    arXiv

  4. WiOpt2025

    A Stochastic Geometry Based Techno-Economic Analysis of RIS-Assisted Cellular Networks

    G. Sun, F. Baccelli, L. U. Garcia, and S. Paris

    Proc. IEEE WiOpt, Linköping, Sweden, 2025.

    arXiv