Tout DSpace

Parcourir par sujet "Sub-carriers"

Voici les éléments 1-3 de 3

    • An efficient probing mechanism for next generation mobile broadband systems 

      Gkatzikis, L.; Tryfonopoulos, T.; Koutsopoulos, I. (2012)
      Opportunistic scheduling exploits multiuser diversity for improving the performance of wireless systems. However, it requires instantaneous channel state information (CSI) to be available at the transmitter side. Since ...

    • Interference mitigation in co-working IEEE 802.11n WLANs 

      Papathanasiou, C.; Koutsopoulos, I.; Tassiulas, L. (2009)
      In a densely deployed Wireless Local Area Network (WLAN) environment, Access Points (APs) could be so close to cause significant channel interference. In the next generation IEEE 802.11n WLANs, inter-cell interference ...

    • Low-complexity beamforming techniques for IEEE 802.11n WLANs 

      Papathanasiou, C.; Koutsopoulos, I.; Tassiulas, L. (2009)
      The impetus of the present study is to describe a downlink beamforming method that increase spectrum efficiency and significantly reduces implementation complexity and power consumption compare to beamforming technique at ...