Performance of score-based opportunistic scheduler in MIMO-OFDM systems

Author

Lei, Lei ; Zeng, Rongfei ; Yang, Chao ; Lin, Chuang

Author_Institution

Tsinghua Univ., Beijing

fYear

2007

fDate

Nov. 28 2007-Dec. 1 2007

Firstpage

530

Lastpage

533

Abstract

Opportunistic scheduling in MIMO-OFDM system has been mostly investigated at packet level for a static user population. This paper formulates a flow level model and extends the score-based scheduler to MIMO-OFDM system. Similar to the traditional score-based scheduler, the new scheduler behaves like proportional fair scheduler in the ideal case, but its performance does not suffer from asymmetric fading statistics. We also show that the multi-user diversity gain for MIMO-OFDM system is the same with that of TDM system.

Keywords

MIMO communication; OFDM modulation; fading channels; multiuser channels; scheduling; telecommunication traffic; MIMO-OFDM system; TDM system; asymmetric fading statistics; flow level model; multiuser diversity gain; processor-sharing model; proportional fair scheduler; score-based opportunistic scheduler; Diversity methods; Fading; MIMO; OFDM; Processor scheduling; Statistics; Time division multiplexing; Transmitting antennas; Wireless LAN; Wireless communication; MIMO-OFDM; opportunistic scheduling; processor-sharing model; scheduling gain;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Signal Processing and Communication Systems, 2007. ISPACS 2007. International Symposium on

Conference_Location

Xiamen

Print_ISBN

978-1-4244-1447-5

Electronic_ISBN

978-1-4244-1447-5

Type

conf

DOI

10.1109/ISPACS.2007.4445941

Filename

4445941