par Molineaux, Guylian ;Odhiambo, Michael ;Horlin, François ;De Doncker, Philippe ;Sarrazin, Julien S. J.
Référence (14-15 September, 2020: Online Meeting), Proc. of the European Cooperation in Science and Technology (EURO-COST CA15104)
Publication Publié, 2020-09
Publication dans des actes
Résumé : Wireless geocasting, i.e. wirelessly broadcasting information towards confined spatial locations, requires spatial focusing capabilities from base stations. By focusing both in the angular and radial domains, OFDM-based Spatial Data Focusing (OFDM-SDF) allows for 2-dimensional geocasting, providing a great increase in flexibility for geocasting compared to T-SDF and beamforming, both limited to angular focusing only. However, just as T-SDF, OFDM-SDF suffers from a strong sensitivity to mulipaths, harshly decreasing its performance in scenarios other than free space. This TD re-evaluates the free space OFDM-SDF system model by exploring the additional challenges when applying SDF in multipath channels and proposes improvements to the OFDM-SDF scheme to increase its robustness in non free space environments.