Switched-based reduced feedback OFDM multi-user opportunistic scheduling

Mohamed Ali Regaeig*, Noureddine Hamdi, Mohamed-Slim Alouini

*Corresponding author for this work

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

5 Scopus citations

Abstract

We consider in this paper the problem of opportunistic scheduling of users employing orthogonal frequency division multiplexing (OFDM) with adaptive modulation and coding under the constraint that all sub-carriers are assigned to a single user during one time slot. We first present an optimal scheme which schedules the user with the best instantaneous channel conditions in order to maximize the system sum-capacity. The optimality of this scheme comes at the expense of a full feedback load and high number of channel estimations. In an attempt at simplifying the complexity of the system, we then present and study the performance of two switched-based scheduling schemes. Extensive and detailed numerical results are performed to illustrate the capacity-feedback tradeoff of the three schemes under consideration. These results show the switched-based scheduling schemes reduce considerably the number of channel estimations and the feedback load with a negligible loss in sum-capacity.

Original languageEnglish (US)
Title of host publication2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2005
Pages2495-2499
Number of pages5
StatePublished - Dec 1 2005
Event2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2005 - Berlin, Germany
Duration: Sep 11 2005Sep 14 2005

Publication series

NameIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
Volume4

Other

Other2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2005
CountryGermany
CityBerlin
Period09/11/0509/14/05

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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