mardi 5 mai 2026

par BUTEL Nathalie

On Tuesday, May 5th at 2:00 pm, Dr. Busra Tegin from CentraleSupélec will give a talk on information-theoretic aspects of DNA data storage in conference room 007 at the i3S lab.

More details about the talk, including the title and abstract, are provided below. 

Affiliation
Assistant Professor (Maître de conférences) at CentraleSupélec, Rennes

Title
Understanding DNA Storage Channels: Insertion Channel Capacity and Composite DNA Design

Abstract
Channels with synchronization errors, such as insertions, deletions and substitutions, play a central role in emerging storage technologies including DNA data storage. In this talk, we first present recent advances in the information-theoretic characterization of insertion channels, highlighting capacity approximations in the regime of small insertion probabilities for both simple and Gallager insertion channel models. We then shift focus to practical DNA storage systems and introduce composite DNA, which exploits synthesis redundancy to increase storage density beyond the conventional four-letter alphabet. By modeling composite DNA as a multinomial channel, we develop decoding methods based on log-likelihood ratios that remain robust under sampling randomness as well as substitution and insertion-deletion errors. Together, these results bridge fundamental limits and practical system design for reliable and high-density DNA storage.

Biography
Busra Tegin is an Assistant Professor (Maître de conférences) at CentraleSupélec and a researcher at IETR (CNRS UMR 6164). She received her B.S., M.S., and Ph.D. degrees in Electrical and Electronics Engineering from Bilkent University in 2017, 2020, and 2023, respectively. Her research focuses on information-theoretic limits and practical algorithms for communication systems, wireless distributed learning, DNA data storage and semantic communications.