Mobile Lightweight Wireless Systems. Second International ICST Conference, MOBILIGHT 2010, Barcelona, Spain, May 10-12, 2010, Revised Selected Papers

Research Article

Evolution of Spatial and Multicarrier Scheduling: Towards Multi-cell Scenario

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  • @INPROCEEDINGS{10.1007/978-3-642-16644-0_46,
        author={Pol Henarejos and Ana Perez-Neira and Velio Tralli and Marco Moretti and Nikos Dimitriou and Giulio Dainelli},
        title={Evolution of Spatial and Multicarrier Scheduling: Towards Multi-cell Scenario},
        proceedings={Mobile Lightweight Wireless Systems. Second International ICST Conference, MOBILIGHT 2010, Barcelona, Spain, May 10-12, 2010, Revised Selected Papers},
        proceedings_a={MOBILIGHT},
        year={2012},
        month={10},
        keywords={},
        doi={10.1007/978-3-642-16644-0_46}
    }
    
  • Pol Henarejos
    Ana Perez-Neira
    Velio Tralli
    Marco Moretti
    Nikos Dimitriou
    Giulio Dainelli
    Year: 2012
    Evolution of Spatial and Multicarrier Scheduling: Towards Multi-cell Scenario
    MOBILIGHT
    Springer
    DOI: 10.1007/978-3-642-16644-0_46
Pol Henarejos1,*, Ana Perez-Neira,*, Velio Tralli2,*, Marco Moretti3,*, Nikos Dimitriou4,*, Giulio Dainelli4
  • 1: Centre Tecnòlogic de Telecomunicacions de Catalunya (CTTC)
  • 2: University of Ferrara
  • 3: Universita di Pisa
  • 4: National Kapodistrian University of Athens
*Contact email: pol.henarejos@cttc.es, ana.perez@cttc.es, velio.tralli@unife.it, marco.moretti@iet.unipi.it, nikodim@phys.uoa.gr

Abstract

OFDMA systems are considered as the promising multiple access scheme of next generation multi-cellular wireless systems. In order to ensure the optimum usage of radio resources, OFDMA radio resource management algorithms have to maximize the allocated power and rate of the different subchannels to the users taking also into account the generated co-channel interference between neighboring cells, which affects the received Quality of Service. This paper discusses various schemes for power distribution schemes in multiple co-channel cells. These schemes include centralized and distributed solutions, which may involve various degrees of complexity and related overhead and may employ procedures such as linear programming. Finally, the paper introduces a new solution that uses a network flow model to solve the maximization of the multi-cell system sum rate. The application of spatial beamforming at each cell is suggested in order to better cope with interference.