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Downlink scheduling for QoS guaranteed services in multi-user MIMO systems with limited feedback

Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.14/118509

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Title: Downlink scheduling for QoS guaranteed services in multi-user MIMO systems with limited feedback
Related: IEEE International Conference on Communications (14 - 18 June 2009 : Dresden)
Related: 2009 IEEE International Confernece on Communications Workshops : ICC 2009, proceedings : Dresden, Germany, 14-18 June 2009, p.4810-4814
DOI: 10.1109/ICC.2009.5198948
Publisher: Piscataway, N.J : IEEE
Date: 2009
FoR/RFCD Code(s): 100500 Communications Technologies
Author/Creator: Pang, Di
Author/Creator: Tian, Lin
Author/Creator: Hu, Jinlong
Author/Creator: Zhou, Jihua
Author/Creator: Shi, Jinglin
Author/Creator: Dutkiewicz, Eryk
Description: Significant throughput gains and system fairness can be obtained by employing scheduling schemes based on precoding techniques. However, QoS guarantee requirements are seldom taken into account. In this paper, we propose a downlink scheduling algorithm for QoS-guaranteed services in multi-user multiple-input multiple-output (MIMO) systems with limited feedback. The proposed algorithm combines stream selection with multi-user packet scheduling. To maximize the overall capacity and reduce co-channel interference, streams are selected in accordance with preceding matrices. In multi-user packet scheduling, the base station first determines the SDMA region size for the primary streams. In addition, packet scheduling for the secondary streams is performed to completely exploit spatial multiplexing gains. Numerical results show that, at the cost of slightly lower system fairness, the proposed algorithm can achieve higher spectrum efficiency, and have a noticeable improvement in guaranteeing QoS requirements in terms of data rates and delay.
Description: 5 page(s)
Subject Keyword: 100500 Communications Technologies
Subject Keyword: stream selection
Subject Keyword: scheduling
Subject Keyword: QoS guarantee
Subject Keyword: MUMIMO
Subject Keyword: precoding
Resource Type: conference paper
Organisation: Macquarie University. Dept. of Physics and Engineering

Identifier: http://hdl.handle.net/1959.14/118509
Identifier: ISBN:9781424434350
Identifier: ISSN:1938-1883
Identifier: mq-rm-2009004677
Language: eng
Rights: Copyright 2009 IEEE. Reprinted from 2009 IEEE International Confernece on Communications Workshops : ICC 2009, proceedings : Dresden, Germany, 14-18 June 2009. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Macquarie University’s products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
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