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Article Dans Une Revue Microwave and Optical Technology Letters Année : 2011

On combating deep fades due to ground reflection in point-to-point WiMAX communications

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Dina Serhal
  • Fonction : Auteur
  • PersonId : 920278
OSA
Mohamad Hajj
  • Fonction : Auteur
  • PersonId : 920279
OSA
Bernard Jecko
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  • PersonId : 914921
OSA
Thierry Monédière
  • Fonction : Auteur
  • PersonId : 915601
OSA

Résumé

In point-to-point wireless communications, the re- ceived signal may experience deep fading due to different propa- gation phenomena. In this paper, we deal specifically with ground reflection and show how it affects the system communication. As application, we consider the example of point-to-point WiMAX communications between base stations (BSs) and trains. The fading problem is mainly due to the fact that both direct and reflected rays are located in the main lobe of the base station antenna and then the correspondant fields have almost the same amplitude. In this paper, we propose several efficient solutions in order to overcome the fading problem. These solutions perform different techniques based, first, on modifying the shape of the main lobe of the BS antenna in order to decrease the magnitude of the ground reflected field, and second, on modifying the antennas polarization. In order to support our propositions, a large set of simulation results is reported and discussed

Dates et versions

hal-00604143 , version 1 (28-06-2011)

Identifiants

Citer

Dina Serhal, Sébastien Reynaud, Régis Chantalat, Mohamad Hajj, Bernard Jecko, et al.. On combating deep fades due to ground reflection in point-to-point WiMAX communications. Microwave and Optical Technology Letters, 2011, 53 (7), pp.1641-1645. ⟨10.1002/mop.26063⟩. ⟨hal-00604143⟩

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