Second place at the Asilomar 2024 Student Paper Contest for Gian Marti
Gian Marti, doctoral student at the Integrated Information Processing group, has achieved the second place at the Student Paper Contest of the Asilomar Conference on Signals, Systems, and Computers – for the second year in a row! This year, he participated with the paper "Fundamental Limits for Jammer-Resilient Communication in Finite-Resolution MIMO," which he co-authored with Alexander Stutz-Tirri and Prof. Christoph Studer.
The paper shows that the potential for MIMO jammer mitigation based on the digital outputs of finite-resolution analog-to-digital converters (ADCs) is fundamentally worse than in infinite-resolution MIMO: Strong jammers will either cause the ADCs to saturate (when the ADCs' quantization range is small) or drown legitimate communication signals in quantization noise (when the ADCs' quantization range is large). The paper provides a fundamental bound on the mutual information between the quantized receive signal and the legitimate transmit signal. This bound shows that, for any fixed ADC resolution, the mutual information tends to zero as the jammer power tends to infinity. The bound also confirms the intuition that for every 6.02 dB increase in jamming power, the ADC resolution must be increased by 1 bit in order to prevent the mutual information from vanishing.
These findings show that high-resolution ADCs are required to ensure the reliability of communication in highly disturbed environments, such as cities or industrial environments.
A preprint of the paper is available on external page external page arXiv.
Congratulations!