Title :
Performance of score-based opportunistic scheduler in MIMO-OFDM systems
Author :
Lei, Lei ; Zeng, Rongfei ; Yang, Chao ; Lin, Chuang
Author_Institution :
Tsinghua Univ., Beijing
fDate :
Nov. 28 2007-Dec. 1 2007
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;
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
DOI :
10.1109/ISPACS.2007.4445941
