Browsing by Subject "OFDMA"

Now showing items 1-9 of 9

    • Channel-, Queue-, and Delay-Aware Resource Allocation in Buffer-Aided Relay-Enhanced OFDMA Networks 

      Hajipour, Javad; Mohamed, Amr; Leung, Victor C.M. ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)
      Resource allocation is an important factor in providing different varieties of services in next-generation broadband wireless systems. In this paper, we consider dynamic routing and subchannel allocation for providing ...

    • Dynamic optimization of LTE pilot scattering based on channel estimation 

      Omri A.; Hamila R.; Hasna , Mazen; Bouallegue R. ( IEEE , 2012 , Conference Paper)
      A dynamic optimization of the pilot scattering for Long Term Evolution (LTE) downlink system is introduced. This optimization is based on channel parameters estimations to optimize the number of pilots used in the transmission ...

    • Estimation of highly selective channels for downlink LTE system by a robust neural network 

      Omri, A.; Hamila, R.; Hasna, M.; Bouallegue, R.; Chaieb, H. ( IEEE , 2010 , Conference Paper)
      In this paper we propose a robust channel estimator for Long Term Evolution (LTE) downlink highly selective using neural network. This method uses the information provided by the reference signals to estimate the total ...

    • Mean squared error analysis for OFDMA signals under joint Tx/Rx IQ imbalance 

      Samara L.; Hamila R.; Khattab T.; Ozdemir O. ( Institute of Electrical and Electronics Engineers Inc. , 2018 , Conference Paper)
      In this paper, a normalized mean squared error (NMSE) expression is derived for an orthogonal frequency division multiple access link under the effects of joint transmitter (Tx) and receiver (Rx) in-phase/quadrature imbalance ...

    • On the fairness of resource allocation in wireless mesh networks: A survey 

      Ahmed I.; Mohammed A.; Alnuweiri H. ( Kluwer Academic Publishers , 2013 , Article Review)
      This article presents a comprehensive survey of resource allocation techniques in Wireless Mesh Networks (WMNs). Wireless mesh networks have emerged as a key technology for next generation application specific multi-hop ...

    • Performance analysis of OFDMA based wireless cooperative networks with interference management 

      Omri A.; Hasna , Mazen ( IEEE , 2013 , Conference Paper)
      In this paper, two cooperative communications schemes with interference management are proposed for orthogonal frequency division multiple access (OFDMA) based wireless networks. The first scheme maximizes the received ...

    • Phase noise mitigation in OFDMA uplink 

      Samara, Lutfi; Syrjala, Ville; Hamila, Ridha; Valkama, Mikko ( IEEE , 2014 , Conference Paper)
      This paper addresses the problem of the phase noise induced spectral spread in an OFDMA uplink scenario. Accompanied with power differences between the users at the receiver in a multiuser case, the phase noise induced ...

    • Resource allocation with interference mitigation in femtocellular networks 

      Ali, N. A.; Ouda, M.; Hassanein, H.; Kubbar, O. ( John Wiley & Sons, Ltd. , 2012 , Article)
      The introduction of femtocells enabled high data rates and better indoor coverage without the need for expanding or increasing the density of cellular networks deployment or upgrading the cellular network infrastructure. ...

    • Utility-based efficient dynamic distributed resource allocation in buffer-aided relay-assisted OFDMA networks 

      Hajipour J.; Mohamed A.; M. Leung V.C. ( Springer International Publishing , 2015 , Article)
      In this paper, we study resource allocation in buffer-aided relay-assisted OFDMA networks. We consider utility-based stochastic optimization framework where there are constraints to be met either instantaneously or in ...