Browsing by Author "Lee, Dong Seop"

Now showing items 1-10 of 10

    • A metaheuristic-based downlink power allocation for LTE/LTE-A cellular deployments 

      González González, David; García Lozano, Mario; Ruiz Boqué, Sílvia; Lee, Dong Seop (2014-08)
      Article
      Restricted access - publisher's policy
      The explosive growth of cellular networks makes their deployment and maintenance more and more complex, time consuming, and expensive. Self-Organizing Networks have been recognized as a promising way to alleviate this ...

    • Adapting fractional frequency reuse to realistic OFDMA cellular networks 

      González González, David; García Lozano, Mario; Ruiz Boqué, Sílvia; Lema, Maria A.; Lee, Dong Seop (2013)
      Conference report
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      Effective intercell interference (ICI) mitigation has been identified as a key challenge for emerging OFDMA cellular technologies such as Long Term Evolution (LTE). In order to address this issue, mobile operators have ...

    • Multi-objective design optimisation of stamping process for advanced high strength steels 

      Lee, Dong Seop; Pons Prats, Jordi; Espinoza Román, Héctor Gabriel; Fruitós Bickham, Óscar Alejandro; Oñate Ibáñez de Navarra, Eugenio (2012)
      Conference report
      Restricted access - publisher's policy
      The paper investigates the multi-objective design optimisation of stamping process to control both the shape and quality of final Advanced High Strength Steels (AHSSs) in terms of springback and safety using Distributed ...

    • Multi-objective high lift systems design optimisation using hybridised evolutionary algorithm with Nash-game 

      Lee, Dong Seop; Periaux, Jacques Francis; Bugeda Castelltort, Gabriel; Oñate Ibáñez de Navarra, Eugenio (2011)
      Conference report
      Restricted access - publisher's policy
      This paper investigates the High Lift System (HLS) application of complex aerodynamic design problem using Genetic Algorithms (GAs) coupled to Game strategies. Two types of optimization methods are used; the first method ...

    • Multiobjective optimization of fractional frequency reuse for irregular OFDMA macrocellular deployments 

      González González, David; García Lozano, Mario; Ruiz Boqué, Sílvia; Lema, Maria A.; Lee, Dong Seop (2015-06)
      Article
      Open Access
      Interference mitigation has been identified as a key challenge for emerging cellular technologies based on Orthogonal Frequency Division Multiple Access, such as Long Term Evolution. In this context, static intercell ...

    • Optimization of realistic full frequency reuse OFDMA-based cellular networks 

      González González, David; García Lozano, Mario; Ruiz Boqué, Sílvia; Olmos Bonafé, Juan José; Lee, Dong Seop (IEEE, 2012)
      Conference report
      Restricted access - publisher's policy
      Nowadays mobile operators are planning and de- signing their mid/long term strategies based on new OFDMA- based cellular technologies such as LTE and WiMAX. Co-siting and re-utilization of existing facilities are within ...

    • Optimization of soft frequency reuse for irregular LTE macrocellular networks 

      González González, David; García Lozano, Mario; Ruiz Boqué, Sílvia; Lee, Dong Seop (2013-05-29)
      Article
      Restricted access - publisher's policy
      Interference management has been recognized by the industry as a key enabler for 4G systems. Emerging technologies include multicarrier systems such as LTE and WiMAX for which effective management of intercell interference ...

    • Reduction environmental effects of civil aircraft through multi-objective flight plan optimisation 

      Lee, Dong Seop; Gonzalez, Luis Felipe; Walker, R.; Periaux, Jacques Francis; Oñate Ibáñez de Navarra, Eugenio (Institute of Physics (IOP), 2010)
      Conference report
      Open Access
      With rising environmental alarm, the reduction of critical aircraft emissions including carbon dioxides (CO2) and nitrogen oxides (NOx) is one of most important aeronautical problems. There can be many possible attempts ...

    • Robust active shock control bump design optimisation using parallel hybrid-MOGA 

      Lee, Dong Seop; Bugeda Castelltort, Gabriel; Periaux, Jacques Francis; Oñate Ibáñez de Navarra, Eugenio (2011)
      Conference report
      Open Access
      The paper investigates a robust optimisation for detail design of active shock control bump on a transonic Natural Laminar Flow (NLF) aerofoil using a Multi-Objective Evolutionary Algorithm (MOEA) coupled to Computational ...

    • Shock control bump design optimization on natural laminar aerofoil 

      Lee, Dong Seop; Periaux, Jacques Francis; Srinivas, K.; Gonzalez, Luis Felipe; Qin, Ning; Oñate Ibáñez de Navarra, Eugenio (Springer, 2011)
      Conference report
      Restricted access - publisher's policy
      The chapter investigates Shock Control Bumps (SCB) on a Natural Laminar Flow (NLF) aerofoil; RAE 5243 for Active Flow Control (AFC). A SCB approach is used to decelerate supersonic flow on the suction/pressure sides of ...