(1 + ε)-competitive algorithm for online OVSF code assignment with resource augmentation

  • Authors:
  • Yuichi Asahiro;Kenta Kanmera;Eiji Miyano

  • Affiliations:
  • Department of Information Science, Kyushu Sangyo University, Fukuoka, Japan;Department of Systems Design and Informatics, Kyushu Institute of Technology, Fukuoka, Japan;Department of Systems Design and Informatics, Kyushu Institute of Technology, Fukuoka, Japan

  • Venue:
  • COCOON'11 Proceedings of the 17th annual international conference on Computing and combinatorics
  • Year:
  • 2011

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Abstract

This paper studies the online Orthogonal Variable Spreading Factor (OVSF) code assignment problem with resource augmentation introduced by Erlebach et al. in [8]. We propose a (1 + ε)-competitive algorithm with help of (1+⌈1/ε⌉) lg*h trees for the height h of the OVSF code tree and any constant 0 h trees, which substantially improves the previous resource of 3h/8 + 2 trees shown by Chan et al. in [2].