Alpha-rule scheduling for MIMO broadcast wireless channels with linear receivers

M. Arif Khan, Rein Vesilo, Iain B. Collings, Linda M. Davis

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

4 Citations (Scopus)
13 Downloads (Pure)


This paper considers a multi-user MIMO broadcast wireless channel where a MAC layer scheduler is used to improve system efficiency and provide quality of service improvements (fairness) to users. In particular, an alpha-rule scheduler is considered that uses rate estimates from users to make user selection decisions. The main challenge faced by the scheduler is that users need to estimate the interference caused by other users before transmit antenna allocation has been done. The paper examines two techniques for estimating data rates. The first technique assumes no interfering signals are present and the second technique includes the dominant interfering signal.We show that the scheduler can be tuned to significantly increase fairness with little reduction in mean sum rate to users and we show that both mean sum rate and fairness can be increased by including the dominant interfering signal to estimate data rates.

Original languageEnglish
Title of host publicationProceedings of the 2009 Australian Communications Theory Workshop, AusCTW 2009
Place of PublicationPistacaway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages6
ISBN (Electronic)9781424433575
ISBN (Print)9781424433568
Publication statusPublished - 2009
Event2009 Australian Communications Theory Workshop, AusCTW 2009 - Sydney, NSW, Australia
Duration: 4 Feb 20097 Feb 2009


Other2009 Australian Communications Theory Workshop, AusCTW 2009
CitySydney, NSW

Bibliographical note

Copyright 2009 IEEE. Reprinted from Proceedings of the 2009 Australian Communications Theory Workshop : the University of New South Wales, Sydney, Australia, 4 - 7 February 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 By choosing to view this document, you agree to all provisions of the copyright laws protecting it.


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