Artigo Revisado por pares

Opportunistic Sensing Using mmWave Communication Signals: A Subspace Approach

2021; Institute of Electrical and Electronics Engineers; Volume: 20; Issue: 7 Linguagem: Inglês

10.1109/twc.2021.3058775

ISSN

1558-2248

Autores

Emanuele Grossi, Marco Lops, Antonia M. Tulino, Luca Venturino,

Tópico(s)

Indoor and Outdoor Localization Technologies

Resumo

In this work, we study the joint detection and localization of multiple delay- and Doppler-spread targets through an opportunistic radar exploiting mmWave communication signals. The problem is formulated as the identification of an unknown number of active subspaces in a large family of subspaces, accounting for the possible positions of potential targets in the delay-Doppler domain: the resulting testing problem is composite and multi-hypothesis. At first, we derive a solution based on the generalized information criterion (GIC), whose complexity is however prohibitive; then, we propose an approximated form of the GIC-based receiver and derive two iterative data-adaptive strategies, both extracting and eliminating the superimposed back-scattered subspace signals one-by-one. Leveraging the IEEE 802.11ad standard, a short-range low-mobility application is discussed to validate the merits of the proposed procedures in terms of detection and localization capabilities, robustness to multi-target interference, and achievable resolution.

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