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WiMAX system performance in highly mobile scenarios with directional antennas

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

Original languageEnglish
Title of host publicationIEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications, 2007 (PIMRC 2007) , Athens
Publisher or commissioning bodyInstitute of Electrical and Electronics Engineers (IEEE)
Publication dateSep 2007
Pages1 - 5
Number of pages5
ISBN (Print)9781424411443
DOIs
StatePublished

Conference

Conference18th International Symposium on Personal, Indoor and Mobile Radio Communications (2007)
CountryGreece
CityAthens
Period1/09/07 → …

Abstract

This paper presents a performance evaluation of a WiMAX system (802.16-2004) employing directional antennas in highly mobile applications. A WiMAX physical layer simulator is used together with an appropriate mobile channel model to perform the analysis. Results show that mobile performance is significantly improved when directional antennas are utilised at the mobile end of the link. These antennas reduce the resulting Doppler spread, which in turn increases the channel's coherence time. In a time varying channel, irreducible errors occur as a result of an aging channel estimate. The structure of the channel estimation pilots has a strong impact on performance. Analysis reveals that results are relatively insensitive to the shape of the Power Doppler Profile, but strongly related to the value of the Doppler spread.

Additional information

Conference Proceedings/Title of Journal: IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications, 2007 (PIMRC 2007) Rose publication type: Conference contribution Additional information: With accompanying conference presentation Sponsorship: This work was partly funded by the Department of Trade and Industry (DTI, UK), Technology Programme project VISUALISE. Terms of use: Copyright © 2007 IEEE. Reprinted from IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications, 2007 (PIMRC 2007). This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.

Documents

DOI

Research areas

  • WiMAX, directional antennas, doppler power spectrum

Event

18th International Symposium on Personal, Indoor and Mobile Radio Communications (2007)

Abbreviated TitlePIMRC
Duration1 Sep 2007 → …
CountryGreece
CityAthens

Event: Conference

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