Sciweavers

Share
VTC
2010
IEEE

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

9 years 7 months ago
Low-Feedback Multiple-Access and Scheduling via Location and Geometry Information
—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 ran...
Congzheng Han, Matthew Webb, Angela Doufexi, Mark
Added 31 Jan 2011
Updated 31 Jan 2011
Type Journal
Year 2010
Where VTC
Authors Congzheng Han, Matthew Webb, Angela Doufexi, Mark A. Beach
Comments (0)
books