Guaranteed QoS in dynamic resource allocation with adaptive beamforming for multiuser multi-antenna OFDM systems

Author

Xiaoxiao ; Zhu, Guangxi ; Hu, Zhenping ; Deng, Tianping

Author_Institution

Dept. of Electron. & Inf. Eng., Huazhong Univ. of Sci. & Technol., China

Volume

1

fYear

2005

fDate

23-26 Sept. 2005

Firstpage

274

Lastpage

277

Abstract

In this paper, subcarrier and power allocation problems for multiuser multi-antenna OFDM systems are investigated. With the goal of minimizing the total transmit power required and guaranteeing each user´s QoS requirements, a low complexity dynamic resource allocation scheme is proposed. It involves adaptive subcarrier assignment, adaptive power control and beamforming. Mathematical analyses and numerical simulations show that the presented algorithm can exploit multiuser diversity to offer significant system-level performance improvement and guarantee different users´ QoS requirements effectively.

Keywords

OFDM modulation; adaptive control; antenna arrays; array signal processing; diversity reception; numerical analysis; power control; quality of service; resource allocation; telecommunication control; OFDM systems; QoS; adaptive beamforming; adaptive power control; adaptive subcarrier assignment; dynamic resource allocation; multiuser diversity; multiuser multiantenna systems; power allocation; subcarrier allocation; Adaptive control; Array signal processing; Base stations; Bit error rate; Diversity reception; Downlink; OFDM; Power system modeling; Programmable control; Resource management;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2005. Proceedings. 2005 International Conference on

Print_ISBN

0-7803-9335-X

Type

conf

DOI

10.1109/WCNM.2005.1544034

Filename

1544034