Joint Opportunistic Beamforming and Subcarrier Assignment for Maximization of User Satisfaction in OFDMA Systems

Author

Maciel, Tarcisio F. ; Freitas, Walter C., Jr. ; Cavalcanti, Francisco Rodrigo P

Author_Institution

Wireless Telecommun. Res. Group (GTEL), Fed. Univ. of Ceara, Fortaleza, Brazil

fYear

2010

fDate

6-9 Sept. 2010

Firstpage

1

Lastpage

5

Abstract

In this paper, we consider a system based on Orthogonal Frequency Division Multiple Access (OFDMA) and investigate the benefits of combining the Satisfaction Oriented Resource Allocation (SORA) algorithm, which aims at maximizing the number of satisfied users in a system, and Orthogonal Random Beamforming (ORB), which provides spatial multiplexing gains and has low computacional complexity, low signaling demands, and high transparency to the User Equipment. Our investigations have shown that considerable gains in terms of throughput and user satisfaction can be achieved by combining SORA and ORB.

Keywords

OFDM modulation; array signal processing; mobile communication; optimisation; OFDMA system; computacional complexity; joint opportunistic beamforming; maximization; orthogonal frequency division multiple access; orthogonal random beamforming; satisfaction oriented resource allocation algorithm; signaling demand; subcarrier assignment; user equipment; user satisfaction; Array signal processing; Complexity theory; Interference; MIMO; Multiplexing; Resource management; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference Fall (VTC 2010-Fall), 2010 IEEE 72nd

Conference_Location

Ottawa, ON

ISSN

1090-3038

Print_ISBN

978-1-4244-3573-9

Electronic_ISBN

1090-3038

Type

conf

DOI

10.1109/VETECF.2010.5594551

Filename

5594551