NDLI: Iterative correction of phase noise and nonlinear distortion in orthogonal frequency division multiplexing (OFDM) systems

Content Provider	Springer Nature Link
Author	Marx, François Farah, Joumana Francis, Clovis
Copyright Year	2005
Abstract	In this paper, we present an iterative approach for the cancellation of phase errors induced by local oscillators in anOfdm receiver as well as the distortion resulting from nonlinear amplifiers. We investigate the influence of several parameters on the system performances, such as the modulation scheme, the number of carriers and the clipping ratio. Simulation results prove the effectiveness of the proposed algorithm for the cancellation of phase errors and non-linear distortion. We show that an error floor occurs for high values of the phase noise or the clipping ratio. This effect can be alleviated using an appropriate channel coding scheme, in conjunction with our iterative algorithm, for the correction of residual errors. We also show that the proposed algorithm complexity is nearly a linear function of the number of sub-carriers.L’étude présentée dans cet article a pour but d’introduire une nouvelle approche itérative pour la correction des erreurs de phase dues aux oscillateurs locaux dans les récepteursOfdm, ainsi que de la distorsion induite par les amplificateurs non linéaires. Nous observons l’influence d’un certain nombre de paramètres sur les performances globales du système, en particulier le type de modulation adopté, le nombre de sous-porteuses orthogonales et le rapport de saturation. Les résultats de simulation présentés montrent l’efficacité de l’algorithme proposé pour l’annulation des erreurs de phase et de la distorsion non linéaire. Dans le cas d’un bruit de phase ou d’une distorsion importante, on démontre que l’utilisation de notre algorithme en association avec un schéma de codage canal approprié permet de s’affranchir du problème de saturation par la correction des erreurs résiduelles. Nous montrons également que la complexité de l’algorithme proposé est une fonction quasi-linéaire du nombre de sous-porteuses.
Starting Page	1197
Ending Page	1218
Page Count	22
File Format	PDF
ISSN	00034347
Journal	Annales Des Télécommunications
Volume Number	60
Issue Number	9-10
e-ISSN	19589395
Language	French
Publisher	Springer-Verlag
Publisher Date	2005-01-01
Publisher Place	Paris
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ofdm Bruit modulation phase Distorsion non linéaire Itération Complexité algorithme Correction erreur Code correcteur erreur Communications Engineering, Networks Information Systems and Communication Service Signal, Image and Speech Processing Computer Communication Networks Information and Communication, Circuits R & D/Technology Policy
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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