Matches in SemOpenAlex for { <https://semopenalex.org/work/W4320165863> ?p ?o ?g. }
Showing items 1 to 67 of
67
with 100 items per page.
- W4320165863 abstract "Terahertz (THz) band is expected to be one of the key enabling technologies of the sixth generation (6G) wireless networks because of its abundant available bandwidth and very narrow beam width. Due to high frequency operations, electrically small array apertures are employed, and the signal wavefront becomes spherical in the near-field. Therefore, near-field signal model should be considered for channel acquisition in THz systems. Unlike prior works which mostly ignore the impact of near-field beam-split (NB) and consider either narrowband scenario or far-field models, this paper introduces both a model-based and a model-free techniques for wideband THz channel estimation in the presence of NB. The model-based approach is based on orthogonal matching pursuit (OMP) algorithm, for which we design an NB-aware dictionary. The key idea is to exploit the angular and range deviations due to the NB. We then employ the OMP algorithm, which accounts for the deviations thereby ipso facto mitigating the effect of NB. We further introduce a federated learning (FL)-based approach as a model-free solution for channel estimation in a multi-user scenario to achieve reduced complexity and training overhead. Through numerical simulations, we demonstrate the effectiveness of the proposed channel estimation techniques for wideband THz systems in comparison with the existing state-of-the-art techniques." @default.
- W4320165863 created "2023-02-13" @default.
- W4320165863 creator A5016154330 @default.
- W4320165863 creator A5025668076 @default.
- W4320165863 creator A5053560016 @default.
- W4320165863 creator A5055961126 @default.
- W4320165863 creator A5063247145 @default.
- W4320165863 date "2023-02-09" @default.
- W4320165863 modified "2023-09-29" @default.
- W4320165863 title "Near-Field Terahertz Communications: Model-Based and Model-Free Channel Estimation" @default.
- W4320165863 doi "https://doi.org/10.48550/arxiv.2302.04802" @default.
- W4320165863 hasPublicationYear "2023" @default.
- W4320165863 type Work @default.
- W4320165863 citedByCount "0" @default.
- W4320165863 crossrefType "posted-content" @default.
- W4320165863 hasAuthorship W4320165863A5016154330 @default.
- W4320165863 hasAuthorship W4320165863A5025668076 @default.
- W4320165863 hasAuthorship W4320165863A5053560016 @default.
- W4320165863 hasAuthorship W4320165863A5055961126 @default.
- W4320165863 hasAuthorship W4320165863A5063247145 @default.
- W4320165863 hasBestOaLocation W43201658631 @default.
- W4320165863 hasConcept C107816215 @default.
- W4320165863 hasConcept C111919701 @default.
- W4320165863 hasConcept C120665830 @default.
- W4320165863 hasConcept C121332964 @default.
- W4320165863 hasConcept C127162648 @default.
- W4320165863 hasConcept C127413603 @default.
- W4320165863 hasConcept C24326235 @default.
- W4320165863 hasConcept C25227671 @default.
- W4320165863 hasConcept C2776096036 @default.
- W4320165863 hasConcept C2776257435 @default.
- W4320165863 hasConcept C2779960059 @default.
- W4320165863 hasConcept C2780202535 @default.
- W4320165863 hasConcept C41008148 @default.
- W4320165863 hasConcept C555944384 @default.
- W4320165863 hasConcept C76155785 @default.
- W4320165863 hasConceptScore W4320165863C107816215 @default.
- W4320165863 hasConceptScore W4320165863C111919701 @default.
- W4320165863 hasConceptScore W4320165863C120665830 @default.
- W4320165863 hasConceptScore W4320165863C121332964 @default.
- W4320165863 hasConceptScore W4320165863C127162648 @default.
- W4320165863 hasConceptScore W4320165863C127413603 @default.
- W4320165863 hasConceptScore W4320165863C24326235 @default.
- W4320165863 hasConceptScore W4320165863C25227671 @default.
- W4320165863 hasConceptScore W4320165863C2776096036 @default.
- W4320165863 hasConceptScore W4320165863C2776257435 @default.
- W4320165863 hasConceptScore W4320165863C2779960059 @default.
- W4320165863 hasConceptScore W4320165863C2780202535 @default.
- W4320165863 hasConceptScore W4320165863C41008148 @default.
- W4320165863 hasConceptScore W4320165863C555944384 @default.
- W4320165863 hasConceptScore W4320165863C76155785 @default.
- W4320165863 hasLocation W43201658631 @default.
- W4320165863 hasOpenAccess W4320165863 @default.
- W4320165863 hasPrimaryLocation W43201658631 @default.
- W4320165863 hasRelatedWork W1545052075 @default.
- W4320165863 hasRelatedWork W2036440025 @default.
- W4320165863 hasRelatedWork W2096474885 @default.
- W4320165863 hasRelatedWork W2106032694 @default.
- W4320165863 hasRelatedWork W2114570682 @default.
- W4320165863 hasRelatedWork W2117542007 @default.
- W4320165863 hasRelatedWork W2135812553 @default.
- W4320165863 hasRelatedWork W2157189868 @default.
- W4320165863 hasRelatedWork W2162934715 @default.
- W4320165863 hasRelatedWork W2974213822 @default.
- W4320165863 isParatext "false" @default.
- W4320165863 isRetracted "false" @default.
- W4320165863 workType "article" @default.