• Doppler compensation for AF two way relaying over time varying UWA channels 

      Daoud, Saed; Karakaya, Bahattin; Ghrayeb, Ali ( IEEE , 2014 , Conference Paper)
      In this paper, we consider Doppler compensation for time varying underwater acoustic channels. The underlying system model comprises two sources, S1 and S2, communicating with each other through a relay, R. The transmission ...
    • Multi-resampling Doppler compensation in cooperative underwater OFDM systems 

      Karakaya B.; Hasna , Mazen; Duman T.M.; Uysal M.; Ghrayeb A. ( IEEE , 2013 , Conference Paper)
      We consider a multi-carrier cooperative underwater acoustic communication (UWAC) system and investigate the Doppler scaling problem arising due to the motion of different nodes. Specifically, we assume an orthogonal frequency ...
    • Relay selection for cooperative underwater acoustic communication systems 

      Karakaya B.; Omar Hasna , Mazen; Uysal M.; Duman T.M.; Ghrayeb A. ( IEEE , 2012 , Conference Paper)
      In this paper, we consider a multi-carrier and multi-relay underwater acoustic communication (UWAC) system and investigate the relay selection problem. Our channel model is built on an aggregation of both large-scale path ...