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Low-feedback multiple-access and scheduling via location and geometry information

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

Original languageEnglish
Title of host publicationIEEE 72nd Vehicular Technology Conference Fall (VTC 2010-Fall), 2010
Publisher or commissioning bodyInstitute of Electrical and Electronics Engineers (IEEE)
Pages1 - 5
Number of pages5
ISBN (Print)9781424435739
StatePublished - Sep 2010
Event72nd Vehicular Technology Conference Fall (VTC 2010-Fall), 2010 - Ottawa, Canada

Publication series

ISSN (Print)10903038


Conference72nd Vehicular Technology Conference Fall (VTC 2010-Fall), 2010
Period1/09/10 → …


This paper exploits the use of location information of wireless terminals to improve the performance of a beamforming system and support multiple access. Based on a system providing real-time 3D coordinate information of all terminals in the environment, a novel feedback-free multi-user scheduler is proposed. It chooses a set of angularly separated wireless terminals for simultaneous transmission in order to reduce the impact of mutual interference on overall system performance. If additional feedback of signal-to-interference and noise ratio is available, a location-assisted multi-user scheduler is also suggested to further improve the overall system performance. Both multi-user schedulers are based on a rate-greedy approach. To improve the fairness in resource allocation without introducing additional feedback overhead, a modified proportional fair algorithm (PFA) based on location information can be applied to a beamforming OFDMA system. By scaling the window length of PFA, a range of trade-offs between fairness and rate can be achieved.

Additional information

Rose publication type: Conference contribution Sponsorship: The authors wish to thank all partners to the ViewNet project for their discussions and participation in this work. Terms of use: Copyright © 2010 IEEE. Reprinted from IEEE 72nd Vehicular Technology Conference Fall (VTC 2010-Fall), 2010. 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 By choosing to view this document, you agree to all provisions of the copyright laws protecting it.

    Research areas

  • Viewnet, location information, beamforming, multi-user Scheduling


72nd Vehicular Technology Conference Fall (VTC 2010-Fall), 2010

Duration1 Sep 2010 → …

Event: Conference

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