Maximum increment based subcarrier allocation for multi-user OFDM systems

Te Kung Tseng*, Tsern-Huei Lee

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, we propose a heuristic algorithm which utilizes channel states for sub-carrier allocation in a multi-user OFDM system. Utility function is adopted as performance measure. The goal is to maximize the total utility summed over all users. The performance and computational complexity of our proposed algorithm are evaluated and compared with those of an algorithm presented in a recent paper. Results show that our proposed algorithm outperforms the previous one with much smaller computational complexity. We also compare the performance of our proposed algorithm with an upper bound. We found that the total utility obtained with our proposed algorithm is very close to the upper bound. The difference is no more than 4% for all the cases we studied.

Original languageEnglish
Title of host publicationProceedings of the IASTED International Conference on Networks and Communication Systems 2006
Pages79-84
Number of pages6
StatePublished - 1 Dec 2006
EventIASTED International Conference on Networks and Communication Systems 2006 - Chiang Mai, Thailand
Duration: 29 Mar 200631 Mar 2006

Publication series

NameProceedings of the IASTED International Conference on Networks and Communication Systems 2006
Volume2006

Conference

ConferenceIASTED International Conference on Networks and Communication Systems 2006
CountryThailand
CityChiang Mai
Period29/03/0631/03/06

Keywords

  • Maximum increment
  • OFDM
  • Subcarrier allocation

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