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Abstract
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.
Translated title of the contribution | Low-feedback multiple-access and scheduling via location and geometry information |
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Original language | English |
Title of host publication | IEEE 72nd Vehicular Technology Conference Fall (VTC 2010-Fall), 2010 |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
Pages | 1 - 5 |
Number of pages | 5 |
ISBN (Print) | 9781424435739 |
DOIs | |
Publication status | Published - Sept 2010 |
Event | 72nd Vehicular Technology Conference Fall (VTC 2010-Fall), 2010 - Ottawa, Canada Duration: 1 Sept 2010 → … |
Publication series
Name | |
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ISSN (Print) | 10903038 |
Conference
Conference | 72nd Vehicular Technology Conference Fall (VTC 2010-Fall), 2010 |
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Country/Territory | Canada |
City | Ottawa |
Period | 1/09/10 → … |
Bibliographical note
Rose publication type: Conference contributionSponsorship: 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.
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Keywords
- Viewnet
- location information
- beamforming
- multi-user Scheduling
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