Mobile Lightweight Wireless Systems. First International ICST Conference, MOBILIGHT 2009, Athens, Greece, May 18-20, 2009, Revised Selected Papers

Research Article

QoS-constrained Energy Minimization in Multiuser Multicarrier Systems

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  • @INPROCEEDINGS{10.1007/978-3-642-03819-8_18,
        author={Qing Bai and Michel Ivrlač and Josef Nossek},
        title={QoS-constrained Energy Minimization in Multiuser Multicarrier Systems},
        proceedings={Mobile Lightweight Wireless Systems. First International ICST Conference, MOBILIGHT 2009, Athens, Greece, May 18-20, 2009, Revised Selected Papers},
        proceedings_a={MOBILIGHT},
        year={2012},
        month={6},
        keywords={resource allocation multicarrier systems cross-layer optimization energy minimization},
        doi={10.1007/978-3-642-03819-8_18}
    }
    
  • Qing Bai
    Michel Ivrlač
    Josef Nossek
    Year: 2012
    QoS-constrained Energy Minimization in Multiuser Multicarrier Systems
    MOBILIGHT
    Springer
    DOI: 10.1007/978-3-642-03819-8_18
Qing Bai1,*, Michel Ivrlač1, Josef Nossek1
  • 1: Technische Universität München
*Contact email: bai.qing@nws.ei.tum.de

Abstract

In this paper the QoS-constrained resource allocation problem in multicarrier systems is considered. Within the established cross-layer framework, parameters for subchannel assignment, adaptive modulation and coding, and ARQ/HARQ protocols are jointly optimized. Instead of the conventional transmit power minimization, the total energy consumption for the successful transmissions of all information bits is set as the optimization goal. The nonconvex primal problem is solved by using Lagrange dual decomposition and the ellipsoid method. Numerical results indicate that the recovered primal solution is well acceptable in performance, and efficient in terms of computational effort.