Exploiting multiuser diversity in OFDMA wireless mesh networks by fractional spatial reuse

Jie Xu, Yiqun Wu, Zhisheng Niu, Jinri Huang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

We consider subcarrier assignment and power allocation in OFDMA wireless mesh networks. Traditional full spatial reuse increases bandwidth efficiency but ignores multiuser diversity in the multi-hop network. Our method enables fractional spatial reuse with which multiuser diversity can also be exploited. The original optimization problem is decomposed into three tractable subproblems. First, subcarrier numbers on each link are decided according to end-to-end requirement and node power constraint. Then a novel link grouping method is proposed to utilize fractional spatial reuse in the network. Finally, a tabubased subcarrier assignment algorithms is designed to assign subcarriers to groups to exploit multiuser diversity. Performance is evaluated under various network sizes to investigate the impact of spatial reuse and simulation results show our proposed scheme achieves multiuser diversity in spatial reuse scenarios.

Original languageEnglish (US)
Title of host publication2010 IEEE International Conference on Communications, ICC 2010
DOIs
StatePublished - Aug 13 2010
Externally publishedYes
Event2010 IEEE International Conference on Communications, ICC 2010 - Cape Town, South Africa
Duration: May 23 2010May 27 2010

Publication series

NameIEEE International Conference on Communications
ISSN (Print)0536-1486

Other

Other2010 IEEE International Conference on Communications, ICC 2010
CountrySouth Africa
CityCape Town
Period5/23/105/27/10

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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  • Cite this

    Xu, J., Wu, Y., Niu, Z., & Huang, J. (2010). Exploiting multiuser diversity in OFDMA wireless mesh networks by fractional spatial reuse. In 2010 IEEE International Conference on Communications, ICC 2010 [5502324] (IEEE International Conference on Communications). https://doi.org/10.1109/ICC.2010.5502324