Uplink scheduling in OFDMA systems using opportunistic beamforming

Author

Yaacoub, Elias ; Yaacoub, Charles

Author_Institution

Dept. of Electr. & Comput. Eng., American Univ. of Beirut, Beirut, Lebanon

fYear

2009

fDate

15-17 Dec. 2009

Firstpage

1

Lastpage

5

Abstract

Opportunistic beamforming is investigated in OFDMA uplink. A low complexity scheduling algorithm for utility maximization with opportunistic beamforming is presented. Scheduling with greedy and proportional fair utilities is studied. A beam is formed in a pseudorandom fashion thus leading to artificial fading variations. This allows users to opportunistically benefit from the antenna gain. Results show improved throughput and fairness in the case of opportunistic beamforming even when only a single beam is used.

Keywords

OFDM modulation; array signal processing; frequency division multiple access; scheduling; OFDMA systems; OFDMA uplink; antenna gain; artificial fading variations; complexity scheduling algorithm; greedy fair utilities; opportunistic beamforming; proportional fair utilities; pseudorandom fashion; uplink scheduling; Antenna arrays; Array signal processing; Diversity methods; Fading; Fluctuations; Rayleigh channels; Resource management; Scheduling algorithm; Signal to noise ratio; Transmitting antennas; OFDMA; antenna arrays; opportunistic beamforming; resource allocation; scheduling; uplink;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Days (WD), 2009 2nd IFIP

Conference_Location

Paris

Print_ISBN

978-1-4244-5660-4

Electronic_ISBN

978-1-4244-5662-8

Type

conf

DOI

10.1109/WD.2009.5449685

Filename

5449685