Nicolò Michelusi — accepted AI-conference papers

2024

CSI-Free Over-The-Air Decentralized Learning Over Frequency Selective Channels

ICASSP 2024accepted

We propose a novel physical layer scheme for decentralized learning over wirelessly connected, serverless systems operating under frequency-selective channels. To achieve scalability with respect to the number of devices, we exploit the waveform superposition properties of wireless channels: devices…

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2023

Sparse Delay-Doppler Channel Estimation for OTFS Modulation Using 2D-Music

Akshay S. Bondre, Christ D. Richmond, Ahmed Alkhateeb, Nicolò Michelusi

ICASSP 2023accepted

In this paper, we address the problem of estimating the delays and Doppler shifts introduced by a sparse wireless channel for orthogonal time frequency space (OTFS) modulation. We show that in the discrete time-frequency (TF) domain, the received signal resulting from an OTFS pilot signal is a super…

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