DocumentCode :
3068031
Title :
A Utility-Based Throughput Maximization (UTM) Scheduling Scheme for Downlink MIMO-OFDMA Systems
Author :
Chung-Ju Chang ; Chih-Ming Yen
Author_Institution :
Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
fYear :
2009
fDate :
20-23 Sept. 2009
Firstpage :
1
Lastpage :
5
Abstract :
In this paper, a utility-based throughput maximization (UTM) scheduling scheme is proposed for downlink multiuser MIMO-OFDMA systems. The UTM scheme allocates subchannels, receiving antenna, and modulation order to multimedia users with goals to maximize throughput and guarantee QoS requirements. Based on the channel quality and the QoS requirements of each user, we formulate the scheduling into an optimization problem subject to system constraints and propose a heuristic TM algorithm to solve the optimization problem. Simulation results show that the UTM scheme achieves system throughput higher than conventional schemes such as ARRA [8] and CDPS [7] schemes by about 8% and 21% at traffic intensity 0.75, respectively. Moreover, the UTM scheme has better QoS satisfaction ratio than the ARRA and CDPS schemes.
Keywords :
MIMO systems; OFDM modulation; quality of service; receiving antennas; QoS requirements; channel quality; downlink MIMO-OFDMA systems; multiple-input-multiple-output systems; orthogonal frequency division multiplexing systems; utility-based throughput maximization scheduling scheme; Constraint optimization; Downlink; Heuristic algorithms; MIMO; Quality of service; Receiving antennas; Resource management; Scheduling algorithm; Throughput; Turing machines;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference Fall (VTC 2009-Fall), 2009 IEEE 70th
Conference_Location :
Anchorage, AK
ISSN :
1090-3038
Print_ISBN :
978-1-4244-2514-3
Electronic_ISBN :
1090-3038
Type :
conf
DOI :
10.1109/VETECF.2009.5378862
Filename :
5378862
Link To Document :
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