System level evaluation of interference in vehicular mobile broadband networks

DE Halls, AR Nix, MA Beach

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

2 Citations (Scopus)
543 Downloads (Pure)

Abstract

This paper presents results from a novel OFDMA multi-cell mobile broadband system-level simulator. The tool is used to statistically characterize uplink and downlink inter-cell interference. Fully loaded interference studies cannot be performed on real-world networks until they have been fully deployed. As such, interference analysis and management must be accurately performed pre- deployment using detailed network simulators. This paper discusses our simulator architecture and the steps necessary to reduce computational complexity inherent in such simulations. The paper then demonstrates the impact of inter-cell interference in OFDMA networks. The results demonstrate that it is the frame-to-frame fluctuations in interference, and not the received signal level, that dominate inaccuracy in the Channel Quality Index (CQI). CQI errors lead to the wrong MCS mode being chosen by the AMC algorithm and this leads to throughput reduction. Results show that this problem is exacerbated by high vehicular speeds and the absence of interference randomization. Compared to ideal MCS selection, throughput reductions of up to 45% are reported.
Translated title of the contributionSystem level evaluation of interference in vehicular mobile broadband networks
Original languageEnglish
Title of host publicationIEEE 73rd Vehicular Technology Conference (VTC Spring), 2011
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1 - 5
Number of pages5
ISBN (Print)9781424483327
DOIs
Publication statusPublished - May 2011
Event73rd Vehicular Technology Conference 2011 (VTC 2011-Spring) - Budapest, Hungary
Duration: 1 May 2011 → …

Publication series

Name
ISSN (Print)15502252

Conference

Conference73rd Vehicular Technology Conference 2011 (VTC 2011-Spring)
Country/TerritoryHungary
CityBudapest
Period1/05/11 → …

Bibliographical note

Rose publication type: Conference contribution

Additional information: With accompanying conference presentation

Sponsorship: David Halls would like to that the UK EPSRC and Motorola for their kind financial assistance.

Terms of use: Copyright © 2011 IEEE. Reprinted with permission, from - DE Halls, AR Nix, MA Beach; paper 'System level evaluation of interference in vehicular mobile broadband networks '; VTC Spring 2011; May 2011.

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Keywords

  • mobile broadband
  • interference characterization
  • cellular
  • WiMAX
  • system level evaluation

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