Evolutionary strategy-based approaches for subcarrier, bit, and power allocation for multiuser OFDM systems

Wei Cheng Pao, Yung Fang Chen

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

4 Scopus citations

Abstract

An evolutionary strategy (ES) scheme is proposed to solve the subcarrier, bit, and power allocation problem in this paper. By the property of the real-valued representation in the evolutionary strategy, the difficulties in coding with the geneticbased algorithms (GA) are conquered. This paper utilizes the method of the binary integer programming to perform the bit loading to overcome the limitation met in the water-filling algorithm. A fuzzy logic controller (FLC is introduced to adjust the mutation probability in the iteration process. A simple subcarrier assignment modification step is also introduced to speed up the convergence rate and improve the performance. Simulation results are conducted to verify the features of better convergence rates with the proposed schemes, and the performance is improved.

Original languageEnglish
Title of host publication2008 IEEE 67th Vehicular Technology Conference-Spring, VTC
Pages1702-1706
Number of pages5
DOIs
StatePublished - 2008
Event2008 IEEE 67th Vehicular Technology Conference-Spring, VTC - Marina Bay, Singapore
Duration: 11 May 200814 May 2008

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252

Conference

Conference2008 IEEE 67th Vehicular Technology Conference-Spring, VTC
Country/TerritorySingapore
CityMarina Bay
Period11/05/0814/05/08

Keywords

  • Allocation
  • Binary integer programming
  • Evolutionary strategy
  • Fuzzy logic controller

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