Browsing by Subject "Relay control systems"

Now showing items 1-18 of 18

    • A hybrid TDMA-MAC cooperative relaying scheme: Stability and delay analysis 

      Salman, Mohamed; El-Keyi, Amr; Nafie, Mohammed; Hasna, Mazen ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)
      We consider a cooperative relaying system with any number of source terminals, one shared relay, and a common destination. We assume a slotted time division multiple access (TDMA) framework in which each source terminal ...

    • Adaptive network coding for spectrum sharing systems 

      Chun Y.J.; Hasna , Mazen; Ghrayeb A. ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)
      In this paper, we propose an adaptive network coding scheme for cognitive relay networks comprising multiple secondary sources communicating with a common destination in the presence of multiple primary users. Conventional ...

    • All-to-all throughput maximization in wireless relay networks with multiple packet reception 

      Zeng, Deze; Guo, Song; Guizani, Mohsen; Ye, Baoliu (2012 , Conference Paper)
      Network Coding (NC) has shown the promise of significant throughput improvement to wireless networks. Meanwhile, Multiple Packet Reception (MPR) has been proved as an efficient way to combat the Multiple Access Interference ...

    • Buffer-aided relaying improves both throughput and end-to-end delay 

      Hajipour J.; Ruby R.; Mohamed A.; M. Leung V.C. ( Springer International Publishing , 2015 , Article)
      Buffer-aided relaying has recently attracted a lot of attention due to the improvement in the system throughput. However, a side effect usually deemed is that buffering at relay nodes results in the increase of packet ...

    • Efficient and Fair Throughput-Optimal Scheduling in Buffer-Aided Relay-Based Cellular Networks 

      Hajipour J.; Mohamed A.; Leung V.C.M. ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Article)
      In this letter, we study throughput-optimal scheduling policies in single-path buffer-aided relay networks, where the packets of a user travel one fixed path from the source to the destination and do not require routing. ...

    • End-to-end performance of transmission systems with relays over Rayleigh-fading channels 

      Hasna , Mazen; Alouini M.-S. ( IEEE , 2003 , Article)
      End-to-end performance of two-hops wireless communication systems with nonregenerative relays over flat Rayleigh-fading channels is presented. This is accomplished by deriving and applying some new closed-form expressions ...

    • Inter-relay interference cancellation for wireless multi-user multi-decode-and-forward relay networks 

      Omri A.; Hasna , Mazen ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)
      In this paper, a cooperative communication scheme with inter-relay interference (IRI) cancellation is proposed for wireless multi-user multi-decode-and-forward (DF) relay networks. The scheme is based on a DF half-duplex ...

    • Inter-relay interference management schemes for wireless multi-user decode-and-forward relay networks 

      Omri A.; Hasna , Mazen; Letaief K.B. ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Article)
      In this paper, two cooperative communications schemes with inter-relay interference (IRI) management are proposed for wireless multi-user decode-and-forward (DF) relay networks. The schemes are based on a DF half-duplex ...

    • Joint hierarchical modulation and network coding for two way relay networks 

      Ahmad R.; Hasna , Mazen ( IEEE , 2012 , Conference Paper)
      The performance of a joint Hierarchical Modulation (HM) and Network Coding (NC) scheme for two way relay networks is introduced and evaluated in this paper. The proposed scheme uses selective relaying based on a signal-to-noise ...

    • Joint optimization of throughput and delay over PPP interfered relay networks 

      Chun, Young Jin; Cotton, Simon L.; Hasna, Mazen O.; Ghrayeb, Ali ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)
      Future wireless networks are expected to achieve higher data rates and ubiquitous coverage by seamless cooperation among diverse network technologies. However, it also increases the risk of co-channel interference and ...

    • Lifetime maximization for greedy selective relay strategies 

      Mousavifar, S.A.; Leung, C.; Khattab, T. (2009 , Conference Paper)
      In this paper we propose a new algorithm for selective relay strategies with Amplify-and-Forward (AF) relays which improves the relay network lifetime. The lifetime of the relay network is defined as the maximum number of ...

    • Lifetime maximization with predictive power management in selective relay networks 

      Mousavifar, S.A.; Khattab, T.; Leung, C. ( Institute of Electrical and Electronics Engineers Inc. , 2009 , Conference Paper)
      A diversity scheme which exploits the existence of a source-destination path to improve the lifetime and outage probability of a wireless selective relay network with Amplifyand-Forward (AF) relays is proposed and studied. ...

    • Mitigating error propagation in two-way relay channels with network coding 

      Nguyen, S.L.H.; Ghrayeb, A.; Al-Habian, G.; Hasna, Mazen ( IEEE , 2010 , Article)
      In relay networks, error propagation at the relay nodes degrades the performance of the system. To combat that effect, it has been suggested to implement a reliability threshold at the relay to control error propagation. ...

    • On hierarchical network coding versus opportunistic user selection for two-way relay channels with asymmetric data rates 

      Zhang X.; Ghrayeb A.; Hasna , Mazen ( IEEE , 2013 , Article)
      We address in this paper the challenge of coping with asymmetric data rates in two-way relay channels. We consider a relay network comprising two sources and one relay. The sources communicate at different rates through ...

    • On the delay of finite buffered multi-hop relay wireless internet of things 

      Elsamadouny A.; Hasna M.; Khattab T.; Abualsaud K.; Yaacoub E. ( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference Paper)
      The evolution of Internet of Things (IoT) as a new application in wireless networks mandates the utilization of wireless cooperative relaying to overcome the energy limitations of IoT devices. Multi-hop relaying is a ...

    • Sparsity-aware Multiple Relay Selection In Large Decode-and-forward Relay Networks 

      Gouissem, Ala; Hamila, Ridha; Al-dhahir, Naofal; Foufou, Sebti ( Hamad bin Khalifa University Press (HBKU Press) , 2014 , Conference Paper)
      Cooperative communication is a promising technology that has attracted significant attention recently thanks to its ability to achieve spatial diversity in wireless networks with only single-antenna nodes. The different ...

    • Sparsity-aware multiple relay selection in large multi-hop decode-and-forward relay networks 

      Gouissem, A.; Hamila, R.; Al-Dhahir, N.; Foufou, S. ( Springer International Publishing , 2016 , Article)
      In this paper, we propose and investigate two novel techniques to perform multiple relay selection in large multi-hop decode-and-forward relay networks. The two proposed techniques exploit sparse signal recovery theory to ...

    • Stability and delay analysis for cooperative relaying with multi-access transmission 

      Salman M.; El-Keyi A.; Nafie M.; Hasna , Mazen ( Springer Verlag , 2015 , Conference Paper)
      We consider a cooperative relaying system with two source terminals, one full duplex relay, and a common destination. Each terminal has a local traffic queue while the relay has two relaying queues to store the relayed ...