Model-based end-to-end learning for multi-target integrated sensing and communication
Preprint, 2023

We study model-based end-to-end learning in the context of integrated sensing and communication (ISAC) under hardware impairments. A monostatic orthogonal frequency-division multiplexing (OFDM) sensing and multiple-input single-output (MISO) communication scenario is considered, incorporating hardware imperfections at the ISAC transceiver antenna array. To enable end-to-end learning of the ISAC transmitter and sensing receiver, we propose a novel differentiable version of the orthogonal matching pursuit (OMP) algorithm that is suitable for multi-target sensing. Based on the differentiable OMP, we devise two model-based parameterization strategies to account for hardware impairments: (i) learning a dictionary of steering vectors for different angles, and (ii) learning the parameterized hardware impairments. For the single-target case, we carry out a comprehensive performance analysis of the proposed model-based learning approaches, a neural-network-based learning approach and a strong baseline consisting of least-squares beamforming, conventional OMP, and maximum-likelihood symbol detection for communication. Results show that learning the parameterized hardware impairments offers higher detection probability, better angle and range estimation accuracy, lower communication symbol error rate (SER), and exhibits the lowest complexity among all learning methods. Lastly, we demonstrate that learning the parameterized hardware impairments is scalable also to multiple targets, revealing significant improvements in terms of ISAC performance over the baseline.

Hardware impairments

orthogonal matching pursuit (OMP).

integrated sensing and communication (ISAC)

joint communication and sensing (JCAS)

model-based learning

machine learning

Author

José Miguel Mateos Ramos

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Christian Häger

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Musa Furkan Keskin

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Luc Le Magoarou

INSA Rennes

Henk Wymeersch

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

A holistic flagship towards the 6G network platform and system, to inspire digital transformation, for the world to act together in meeting needs in society and ecosystems with novel 6G services

European Commission (EC) (101095759-Hexa-X-II), 2022-12-01 -- 2025-06-30.

Physics-Based Deep Learning for Optical Data Transmission and Distributed Sensing

Swedish Research Council (VR) (2020-04718), 2021-01-01 -- 2024-12-31.

Subject Categories

Telecommunications

Communication Systems

Signal Processing

More information

Created

12/4/2023