A Utility-Based Adaptive Resource Scheduling Scheme for Multiple Services in Downlink Multiuser MIMO-OFDMA Systems

In this paper, a utility maximization-based resource scheduling and sharing (UM-RSS) scheme is proposed for downlink multiuser multiple-input-multiple-output orthogonal frequency-division multiple access (MU-MIMO-OFDMA) systems. Before performing the UM-RSS scheduling scheme, we first allocate the b...

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Bibliographic Details
Published in2013 IEEE 77th Vehicular Technology Conference (VTC Spring) pp. 1 - 5
Main Authors Lidong Zhang, Pengfei Lu, Zhongyuan Yu, Huawei Cao, Chao Sun, Chengjie Wu
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2013
Subjects
Delays
MIMO
OFDM
Resource management
Throughput
Transmitting antennas
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Summary:In this paper, a utility maximization-based resource scheduling and sharing (UM-RSS) scheme is proposed for downlink multiuser multiple-input-multiple-output orthogonal frequency-division multiple access (MU-MIMO-OFDMA) systems. Before performing the UM-RSS scheduling scheme, we first allocate the best antenna sequence for every served user by a suboptimal multiuser antenna selection (MAS) algorithm according to the channel state information (CSI). To balance efficiency and fairness, the integrated scheduling algorithm of UM-RSS is responsible for assigning subcarriers to different users, as well as distributing the assigned subcarriers among multiple services for the same user. For a MU-MIMO-OFDMA system, the joint spatial and frequency scheduling may improve the system spectrum efficiency by exploiting the multiuser diversity gain in both frequency and spatial domain. Finally, numeric result simulated show that the UM-RSS scheduling scheme outperforms traditional scheduling schemes in terms of system throughput, system spectral efficiency, and fairness criterion.
ISSN:1550-2252
DOI:10.1109/VTCSpring.2013.6691852