The JDTDOA algorithm applied to signal recovery : a performance analysis

Auteur(s): Blanchard-Lapierre, AlexiaGrenier, Dominic
Résumé: This article suggests a novel method to retrieve a narrowband signal sent in a multipath environment with a delay spread considering ISI between symbols. The proposed method does not require any preamble nor known signal. Using the joint direction and time delay of arrivals estimation algorithm developed in prior work, the directions and time delays of arrival in the multipath channel are jointly estimated and associated while keeping a low computational cost. In this process, a MVDR beamformed copy of each arriving signal is created. The quality of these “pseudo copies” is evaluated and compared to the original direct and reflected signals in this work. Another beamforming method, the Moore–Penrose pseudoinverse, with better retrieval of the direct and reflected signals is also proposed. Using a simple delay-and-sum operation on the previously beamformed copies, it is possible to substantially improve the the system’s performance in terms of bit error rate. An approach using oversampling on the array antenna is introduced to improve performance. Numerical simulations are discussed to support theory.
Type de document: Article de recherche
Date de publication: 24 février 2017
Date de la mise en libre accès: 15 août 2018
Version du document: AM
Lien permanent: http://hdl.handle.net/20.500.11794/13929
Ce document a été publié dans: Signal, Image and Video Processing, Vol. 11 (60) (2017)
https://doi.org/10.1007/s11760-017-1076-9
Springer
Autre version disponible: 10.1007/s11760-017-1076-9
Collection :Articles publiés dans des revues avec comité de lecture

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