Description du projet
Résolution des interférences dans des environnements spectralement encombrés au-delà de la 5G
Les systèmes de communication sans fil utilisent des bandes de fréquences de plus en plus grandes. En conséquence, les services de communication sans fil se rapprochent de très près des bandes de fréquences radar à courte portée qui comprennent à la fois les radars personnels automobiles et intérieurs. La coexistence de radars et d’appareils de communication dans le même spectre au sein des réseaux de nouvelle génération peut donc conduire à des interférences mutuelles qui compromettent la sécurité des radars et le débit de communication. Le projet OTFS-RADCOM, financé par l’UE, vise donc à résoudre le problème des interférences dans les environnements sans fil spectralement encombrés. À cette fin, il développera une co-conception innovante de radars et de systèmes de communication via une forme d’onde conjointe temps-fréquence-espace orthogonale. Cela permettra de mettre en œuvre les deux fonctionnalités sur un même matériel. Le travail du projet pourrait également faire progresser les technologies au-delà de la 5G.
Objectif
Wireless communication systems are using increasingly larger carrier frequencies, from 900 MHz for 2G cellular, over 2 GHz for 3G, 2.5 GHz for 4G/LTE, and leaping to 28 GHz in 5G. Similar trends are visible for WiFi-based communication, with the 802.11ad standard operating at 60 GHz. This places wireless communication services very close to short range radar frequency bands. Such radars operate at frequencies around 24 GHz, 63 GHz, as well as at 76-81 GHz, and include both automotive radars and indoor personal radars. In next-generation networks, a large number of spectrally coexistent radars and communication devices can thus bring up the problem of mutual interference, which threatens radar safety and communication throughput. The objective of this action is to provide a new and industrially relevant solution to the problem of interference in spectrally congested wireless environments. To this aim, we propose a novel co-design of radar and communications (RadCom) systems via a joint Orthogonal Time-Frequency-Space (OTFS) waveform, which enables both functionalities to be implemented on a single hardware. By multiplexing symbols in the delay-Doppler domain, the OTFS can overcome major limitations of the Orthogonal Frequency Division Multiplexing (OFDM) waveform (the de-facto standard for downlink communications), such as high peak-to-average-power ratio (PAPR), small channel coherence time and inter-carrier interference. The OTFS has recently been proposed for communication and we believe it holds great potential for radar as well. In close collaboration with local industry (Volvo, Ericsson), we propose to (i) derive and experimentally validate OTFS received signal models, (ii) design OTFS radar signal processing chain, and (iii) design an integrated OTFS RadCom solution. If successful, the project results can be employed in a wide range of applications (e.g. high-speed automated vehicles, dual-functional radar base stations) and contribute to beyond 5G standards.
Champ scientifique
- engineering and technologyelectrical engineering, electronic engineering, information engineeringinformation engineeringtelecommunicationstelecommunications networksmobile network5G
- engineering and technologyelectrical engineering, electronic engineering, information engineeringelectronic engineeringsignal processing
- engineering and technologyelectrical engineering, electronic engineering, information engineeringinformation engineeringtelecommunicationstelecommunications networksmobile network4G
- engineering and technologyelectrical engineering, electronic engineering, information engineeringinformation engineeringtelecommunicationsradio technologyradar
Mots‑clés
Programme(s)
Régime de financement
MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)Coordinateur
412 96 GOTEBORG
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