A Transmit Beamforming and Nulling Approach with Distributed Scheduling to Improve Cell Edge Throughput
Joint Authors
Wong, Wendy C.
Li, Qinghua
Talwar, Shilpa
Source
International Journal of Digital Multimedia Broadcasting
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-02-18
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Engineering Sciences and Information Technology
Telecommunications Engineering
Electronic engineering
Information Technology and Computer Science
Abstract EN
We propose a transmit scheme for WiMAX systems, where multiple base stations (BSs) employ downlink transmit beamforming and nulling for interference mitigation, with minimal coordination amongst BSs.
This scheme improves system throughput and robustness, by increasing cell edge and overall cell throughputs by 68% and 19%, respectively, and by delivering improvement for mobile speed up to 60 km/h.
First, cell edge users suffering from severe interferences are identified.
Next, the RRM unit allocates resource to serving cell edge users only.
BSs will schedule to serve their cell edge users independently using the allocated resources by the RRM.
A special uplink sounding region is designed for BSs to learn the interference environment and form proper beams and nulls.
The nulls formed towards users served by other BSs reduced interference from a BS towards these users and is the basic building block of our algorithm.
American Psychological Association (APA)
Wong, Wendy C.& Li, Qinghua& Talwar, Shilpa. 2010. A Transmit Beamforming and Nulling Approach with Distributed Scheduling to Improve Cell Edge Throughput. International Journal of Digital Multimedia Broadcasting،Vol. 2010, no. 2010, pp.1-9.
https://search.emarefa.net/detail/BIM-511276
Modern Language Association (MLA)
Wong, Wendy C.…[et al.]. A Transmit Beamforming and Nulling Approach with Distributed Scheduling to Improve Cell Edge Throughput. International Journal of Digital Multimedia Broadcasting No. 2010 (2010), pp.1-9.
https://search.emarefa.net/detail/BIM-511276
American Medical Association (AMA)
Wong, Wendy C.& Li, Qinghua& Talwar, Shilpa. A Transmit Beamforming and Nulling Approach with Distributed Scheduling to Improve Cell Edge Throughput. International Journal of Digital Multimedia Broadcasting. 2010. Vol. 2010, no. 2010, pp.1-9.
https://search.emarefa.net/detail/BIM-511276
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-511276