Print Email Facebook Twitter MIMO OTFS With Arbitrary Time-Frequency Allocation for Joint Radar and Communications Title MIMO OTFS With Arbitrary Time-Frequency Allocation for Joint Radar and Communications Author Correas Serrano, A. (Fraunhofer Institute for High Frequency Physics and Radar Techniques) Petrov, N. (TU Delft Microwave Sensing, Signals & Systems; NXP Semiconductors) Gonzalez-Huici, Maria (Fraunhofer Institute for High Frequency Physics and Radar Techniques) Yarovoy, Alexander (TU Delft Microwave Sensing, Signals & Systems) Date 2023 Abstract This paper proposes a novel waveform, namely non-uniform OTFS (NU-OTFS), for joint radar and communication applications (Radcom) in multi-user/MIMO scenarios. Based on orthogonal time frequency space (OTFS) modulation, the proposed waveform is realized by using a non-uniform symplectic finite Fourier transform (NU-SFFT) to generate non-overlapping quasi-arbitrary time-frequency representations of OTFS messages. Non-uniform sampling and sparse reconstruction algorithms within the compressed sensing framework are employed to avoid (self-)interference and enhance radar target parameter estimation. The performance of NU-OTFS and its corresponding receivers is evaluated through numerical simulations and measurements, and compared with state-of-the-art MU/MIMO Radcom OTFS system concepts. NU-OTFS allows for increased flexibility in time-frequency resource allocation and larger unambiguous radar parameter estimation while showing comparable performance to state-of-the-art OTFS multi-user communication implementations in realistic high-mobility channel conditions. Subject Orthogonal time-frequency space (OTFS)multiple-input-multiple-output (MIMO)compressed sensing (CS)sparse reconstructionradar-communication (Radcom)radar sensing To reference this document use: http://resolver.tudelft.nl/uuid:63e6e67e-eb22-4490-8e36-73fb345263e7 DOI https://doi.org/10.1109/TRS.2023.3329918 Embargo date 2024-05-24 ISSN 2832-7357 Source IEEE Transactions on Radar Systems, 1, 707-718 Bibliographical note Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2023 A. Correas Serrano, N. Petrov, Maria Gonzalez-Huici, Alexander Yarovoy Files PDF MIMO_OTFS_With_Arbitrary_ ... ations.pdf 8.02 MB Close viewer /islandora/object/uuid:63e6e67e-eb22-4490-8e36-73fb345263e7/datastream/OBJ/view