Performance of a Reduced Feedback OFDMA System Employing Joint Scheduling and Diversity

Author

Hur, Seong-Ho Paul ; Rao, Bhaskar D.

Author_Institution

Dept. of ECE, U.C. San Diego, La Jolla, CA, USA

fYear

2011

fDate

15-18 May 2011

Firstpage

1

Lastpage

5

Abstract

We consider joint scheduling and diversity to enhance the benefits of multiuser diversity in a multiuser OFDMA scheduling system. The OFDMA spectrum is assumed to consist of N_RB resource blocks and the reduced feedback scheme consists of each user feeding back only the best- N_FB signal to noise ratios. Assuming maximum SNR scheduling, we develop a framework to analyze the performance of both adaptive and non-adaptive rate schemes for a general value of N_FB. Based on this framework, we provide closed-form expressions for the sum rate and the bit error probability when transmit antenna selection is employed at the transmitter and maximal ratio combining is utilized at the receivers.

Keywords

OFDM modulation; diversity reception; error statistics; feedback; frequency division multiple access; probability; radio receivers; radio transmitters; scheduling; transmitting antennas; OFDMA spectrum; SNR scheduling; adaptive rate scheme; bit error probability; closed-form expression; feedback scheme reduction; feeding back; maximal ratio combining; multiuser OFDMA scheduling system; multiuser diversity; nonadaptive rate scheme; radio receiver; radio transmitter; resource block; signal to noise ratio scheduling; transmit antenna selection; Diversity reception; Feedback amplifier; Joints; Receiving antennas; Signal to noise ratio; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Spring), 2011 IEEE 73rd

Conference_Location

Yokohama

ISSN

1550-2252

Print_ISBN

978-1-4244-8332-7

Type

conf

DOI

10.1109/VETECS.2011.5956464

Filename

5956464