An efficient downlink mapping algorithm for AMC mode in WiMAX systems

Tsern-Huei Lee*, Zi Yang Yang, Qi Quan Huang, Yaw Wen Kuo

*Corresponding author for this work

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

1 Scopus citations

Abstract

This paper proposes an efficient downlink resource allocation scheme for Orthogonal Frequency Division Multiple Access based WiMAX systems using the Adaptive Modulation and Coding mode operation. Given a set of user requests, the proposed algorithm determines the modulation scheme and allocates a two-dimensional (time and frequency) burst to each user. It is known that finding the optimal solution for such a resource allocation problem is NP-complete. To reduce the computation complexity, this paper proposes a heuristic solution. Compared with the Efficient Downlink Bandwidth Allocation (EDBA) algorithm [6], the proposed scheme achieves higher channel utilization and system throughput with similar execution time. Simulation results show that the average channel utilization of the proposed scheme is about 75∼85% and that of EDBA is about 60∼70%.

Original languageEnglish
Title of host publicationIEEE TENCON 2012
Subtitle of host publicationSustainable Development Through Humanitarian Technology
DOIs
StatePublished - 1 Dec 2012
Event2012 IEEE Region 10 Conference: Sustainable Development Through Humanitarian Technology, TENCON 2012 - Cebu, Philippines
Duration: 19 Nov 201222 Nov 2012

Publication series

NameIEEE Region 10 Annual International Conference, Proceedings/TENCON

Conference

Conference2012 IEEE Region 10 Conference: Sustainable Development Through Humanitarian Technology, TENCON 2012
CountryPhilippines
CityCebu
Period19/11/1222/11/12

Keywords

  • AMC
  • Burst mapping
  • OFDMA
  • WiMAX

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