Title :
A reduced feedback proportional fair multiuser scheduling scheme
Author :
Shaqfeh, Mohammad ; Alnuweiri, Hussein ; Alouini, Mohamed-Slim
Author_Institution :
Texas A&M Univ. at Qatar, Doha, Qatar
Abstract :
Multiuser switched-diversity scheduling schemes were recently proposed in order to overcome the heavy feedback requirements of conventional opportunistic scheduling schemes by applying a threshold-based, distributed and ordered scheduling mechanism. A slight reduction in the prospected multiuser diversity gains is an acceptable trade-off for great savings in terms of required channel-state-information feedback messages. In this work, we propose a novel proportional fair multiuser switched-diversity scheduling scheme and we demonstrate that it can be optimized using a practical and distributed method to obtain the per-user feedback thresholds. We demonstrate by numerical examples that our reduced feedback proportional fair scheduler operates within 0.3 bits/sec/Hz from the achievable rates by the conventional full feedback proportional fair scheduler in Rayleigh fading conditions.
Keywords :
Rayleigh channels; diversity reception; scheduling; Rayleigh fading channel; channel-state-information feedback messages; distributed scheduling mechanism; multiuser switched-diversity scheduling schemes; opportunistic scheduling schemes; ordered scheduling mechanism; reduced feedback proportional fair multiuser scheduling scheme; threshold-based scheduling mechanism; Base stations; Fading; Mobile communication; Optimization; Signal to noise ratio; Switches; Wireless communication; multiuser switched diversity; opportunistic scheduling; proportional fairness; reduced feedback;
Conference_Titel :
GLOBECOM Workshops (GC Wkshps), 2011 IEEE
Conference_Location :
Houston, TX
Print_ISBN :
978-1-4673-0039-1
Electronic_ISBN :
978-1-4673-0038-4
DOI :
10.1109/GLOCOMW.2011.6162417