Beach, MA

Doufexi, A

Han, C

Webb, MW

English

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.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

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Angle-of-Departure-Aided Opportunistic Space-Division Multiple Access”,

Appearance based indexing for relocalisation in real-time visual SLAM,” in

Channel models for HIPERLAN/2,” ETSI/BRAN document no.

Design Considerations and Physical Layer Performance for a 4G OFDMA System Employing Dynamic Subcarrier Allocation,” IEEE PIMRC,

Dynamic resource management in the fourth generation wireless systems&quot;, in

Estimation and Capacity of Channels in Smart Antenna Wireless Communication Systems,

Fairness and capacity trade-off

mapping the environment.

Opportunistic beamforming using dumb antennas,”

Smart Antennas for Wireless Communications:

Vehicular Communication Systems: Enabling Technologies, Applications,

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

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Low-Feedback Multiple-Access and Scheduling via Location and Geometry Information

https://research-information.bris.ac.uk/files/3019862/Han_IEEE_VTCFall_2010.pdf

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

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