Browsing by Subject "Cooperative-ofdm"

Now showing items 1-6 of 6

    • Cooperative OFDM systems for UWAC with SNR-based relay selection schemes 

      Karakaya B.; Sökün, Hamza Ümit; Uysal M.; Hasna , Mazen ( IEEE , 2012 , Conference Paper)
      In this paper, we investigate a multi-carrier multi-relay cooperative system with amplify-and-forward relaying over frequency-selective underwater acoustic channels. Relay selection rules rely on the maximization of ...

    • Novel selective OFDM-based cooperative techniques for multi-hop systems 

      Gouissem A.; Hasna , Mazen; Hamila R. ( Elsevier B.V. , 2015 , Article)
      In multi-hop systems, the theoretical outage probabilities and diversity orders of novel Orthogonal Frequency Division Multiplexing (OFDM) based Decode and Forward (DF) cooperative techniques are derived for different ...

    • Optimized Selective OFDMA in multihop network 

      Gouissem A.; Hasna , Mazen; Hamila R.; Besbes H.; Abdelkefi F. ( IEEE , 2012 , Conference Paper)
      Selective OFDMA is a powerfull relaying technique with subcarrier based selection. This scheeme has a high potential to considerably improve the performance of cooperative OFDM systems. However, in practice, the implementation ...

    • Outage performance of cooperative systems under IQ imbalance 

      Gouissem A.; Hamila R.; Hasna , Mazen ( Institute of Electrical and Electronics Engineers Inc. , 2014 , Article)
      In this contribution, we investigate the outage performance of OFDM-based Decode and Forward (DF), Amplify and Forward (AF) and Controlled DF (CDF) cooperative systems under IQ Imbalance (IQI). In particular, tractable and ...

    • Outage performance of OFDM Ad-hoc routing with and without subcarrier grouping in multihop network 

      Gouissem A.; Hasna , Mazen; Hamila R.; Besbes H.; Abdelkefi F. ( IEEE , 2012 , Conference Paper)
      In this contribution, we investigate Decode and Forward (DF) OFDM Ad-hoc Routing strategy with bottleneck maximization. We derive the exact outage probability and diversity order for the different scenarios: with and without ...

    • Outage performance of OFDM-based relaying systems under IQ imbalance 

      Gouissem A.; Hamila R.; Hasna , Mazen ( IEEE , 2013 , Conference Paper)
      In the presence of different IQ imbalance (IQI) levels in the different nodes of a cooperative system, it becomes necessary to investigate the effect of each imbalance parameter on the performance. In this contribution, ...