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Sökning: WFRF:(Sakhnini Adham)

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1.
  • Chen, Hui, 1992, et al. (författare)
  • 6G Localization and Sensing in the Near Field: Features, Opportunities, and Challenges
  • 2024
  • Ingår i: IEEE Wireless Communications. - 1536-1284 .- 1558-0687. ; In press
  • Tidskriftsartikel (refereegranskat)abstract
    • The far-field channel model has historically been used in wireless communications due to the simplicity of mathematical modeling and convenience for algorithm design. With the need for high data rates, low latency, and ubiquitous connectivity in the sixth generation (6G) of communication systems, new technology enablers such as extremely large antenna arrays (ELAAs), reconfigurable intelligent surfaces (RISs), and distributed multiple-input-multiple-output (D-MIMO) systems will be adopted. These enablers not only aim to improve communication services but also have an impact on localization and sensing (L&S), which are expected to be fundamentally built-in functionalities in future wireless systems. Despite appearing in different scenarios and supporting different frequency bands, such enablers share the so-called near-field (NF) features, which will provide extra geometric information conducive to L&S. In this work, we describe the NF features, namely, the spherical wave model, spatial non-stationarity, and beam squint effect. After discussing how L&S see NF differently from communication, the opportunities and open research challenges are provided.
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2.
  • Sakhnini, Adham, et al. (författare)
  • Direction of Arrival Estimation using the Generalized SPICE Criterion
  • 2021
  • Ingår i: EuRAD 2020 - 2020 17th European Radar Conference. - 9782874870613 ; , s. 302-305
  • Konferensbidrag (refereegranskat)abstract
    • In this paper, we extend the generalized SPICE estimator to the multichannel case, illustrating the resulting performance gain for direction of arrival estimation. The resulting estimator is found to offer improved estimation performance and robustness to the presence of correlated sources.
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